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<front>
<journal-meta>
<journal-id journal-id-type="issn">2397-5563</journal-id>
<journal-title-group>
<journal-title>Journal of Portuguese Linguistics</journal-title>
</journal-title-group>
<issn pub-type="epub">2397-5563</issn>
<publisher>
<publisher-name>Open Library of Humanities</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.16995/jpl.24247</article-id>
<article-categories>
<subj-group>
<subject>Article</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>Morphological variation in Brazilian imperatives: The importance of ecological factors and the relationship with the written standard</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author" corresp="yes">
<name>
<surname>O&#8217;Neill</surname>
<given-names>Paul</given-names>
</name>
<email>P.ONeill@lmu.de</email>
<xref ref-type="aff" rid="aff-1">1</xref>
</contrib>
<contrib contrib-type="author">
<contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0395-7786</contrib-id>
<name>
<surname>Ugartemend&#237;a</surname>
<given-names>Cecilia Marcela</given-names>
</name>
<email>c.ugartemendia@lmu.de</email>
<xref ref-type="aff" rid="aff-1">1</xref>
</contrib>
</contrib-group>
<aff id="aff-1"><label>1</label>Ludwig-Maximilians-Universit&#228;t, Munich, Germany</aff>
<pub-date publication-format="electronic" date-type="pub" iso-8601-date="2026-04-07">
<day>07</day>
<month>04</month>
<year>2026</year>
</pub-date>
<pub-date pub-type="collection">
<year>2026</year>
</pub-date>
<volume>25</volume>
<issue>1</issue>
<fpage>1</fpage>
<lpage>38</lpage>
<permissions>
<copyright-statement>Copyright: &#x00A9; 2026 The Author(s)</copyright-statement>
<copyright-year>2026</copyright-year>
<license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0/">
<license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See <uri xlink:href="http://creativecommons.org/licenses/by/4.0/">http://creativecommons.org/licenses/by/4.0/</uri>.</license-p>
</license>
</permissions>
<self-uri xlink:href="http://jpl.letras.ulisboa.pt/articles/10.16995/jpl.24247/"/>
<abstract>
<p>This study investigates morphological variation in Brazilian Portuguese (BP) imperatives, focusing on the alternation between forms derived from the <italic>tu</italic> paradigm (<sc>t-imper</sc>, e.g., <italic>faz</italic>) and the <italic>voc&#234;</italic> paradigm (<sc>v-imper</sc>, e.g., <italic>fa&#231;a</italic>). While previous research has linked this variation to geographic, pragmatic (e.g., immediacy), and grammatical (e.g., negative polarity) factors, we hypothesize a social dimension: <sc>t-imper</sc> marks solidarity/non-deferential contexts, while <sc>v-imper</sc> signals deference/social distance. An experiment in Araraquara and Belo Horizonte elicited imperatives from speakers addressing familiar (friend/sibling) and deferential (boss) interlocutors. Results revealed significant variation, with Araraquara speakers favouring <sc>v-imper</sc> in deferential contexts and negative polarity, supporting our hypothesis partially. However, Belo Horizonte showed no such correlation, suggesting regional divergence or idiosyncratic variation. We argue that the lack of categorical patterns may stem from BP&#8217;s complex relationship with its written standard, which differs markedly from spoken varieties, promoting tolerance for variability. The study highlights the role of social ecology in maintaining idiosyncratic variation and challenges assumptions that all linguistic variation is functionally or socially motivated. Ultimately, we advocate for greater recognition of free variation as a legitimate linguistic phenomenon, particularly in contexts where standard language ideologies are contested.</p>
</abstract>
</article-meta>
</front>
<body>
<sec>
<title>1. Introduction</title>
<p>Spoken Brazilian Portuguese (henceforth BP) is linguistically extremely different from European Portuguese (henceforth EP). In fact, with respect to their morphology, the distance between spoken BP and EP is so great that it has been argued that they could be considered typologically different (<xref ref-type="bibr" rid="B29">Clemens 2014, p. 186</xref>). The reasons responsible for these linguistic differences are complex and contested (<xref ref-type="bibr" rid="B79">Naro &amp; Scherre, 2007</xref>), but many urban varieties of BP undoubtedly developed as a result of koineization (Britain &amp; Trudgill, 2005b; <xref ref-type="bibr" rid="B59">Kerswill, 2013</xref>; <xref ref-type="bibr" rid="B107">Siegel, 1985</xref>; <xref ref-type="bibr" rid="B116">Trudgill, 1986</xref>, <xref ref-type="bibr" rid="B121">2010</xref>, <xref ref-type="bibr" rid="B122">2011</xref>). This is a process of new dialect formation, which takes place when speakers of mutually intelligible dialects come into intense and extended contact, and often leads to quite rapid, and occasionally dramatic, change, characterized by a number of features, including the emergence of mixed paradigms. Such mixed paradigms are a characteristic of BP.</p>
<p>The formation of new dialects via the process of koineization/dialect-mixing is a central analytical concept in modern dialectology and also figures prominently in sociolinguistic and historical-linguistic studies (<xref ref-type="bibr" rid="B5">Auer et al., 2005</xref>; <xref ref-type="bibr" rid="B13">Britain &amp; Trudgill, 2005</xref>; <xref ref-type="bibr" rid="B60">Kerswill &amp; Williams, 2000</xref>; <xref ref-type="bibr" rid="B59">Kerswill, 2013</xref>; <xref ref-type="bibr" rid="B107">Siegel, 1985</xref>; <xref ref-type="bibr" rid="B116">Trudgill, 1986</xref>, <xref ref-type="bibr" rid="B117">2001a</xref>, <xref ref-type="bibr" rid="B118">2001b</xref>, <xref ref-type="bibr" rid="B119">2004</xref>, <xref ref-type="bibr" rid="B120">2008</xref>, <xref ref-type="bibr" rid="B121">2010</xref>, <xref ref-type="bibr" rid="B122">2011</xref>; <xref ref-type="bibr" rid="B124">Tuten, 2008</xref>). Within the Romance languages, it has been hypothesised that koin&#233;, the name given to new dialect born from koineization, underlie the basis of standard French (Lodge, 2010) and even standard Italian (<xref ref-type="bibr" rid="B14">Brown, 2020</xref>). It is Spanish, however, to which the theory of koineization has been most applied due to its socio-political history (<xref ref-type="bibr" rid="B88">Penny, 2000</xref>; <xref ref-type="bibr" rid="B123">Tuten, 2003</xref>, <xref ref-type="bibr" rid="B125">2023</xref>). Despite the history of Portuguese sharing many features with Spanish that are naturally compatible with and invite a koineization-based analysis (displacement of peoples and formation of new communities in the south of the Iberian Peninsula due to the Christian Reconquest, colonial expansion in the Americas), this concept has largely been absent from historical and dialectal studies of Portuguese. Notable exceptions are Cardeira and Fernandes (<xref ref-type="bibr" rid="B23">2008</xref>) and Cardeira (<xref ref-type="bibr" rid="B22">2009</xref>) for EP, and Barros Pessoa (<xref ref-type="bibr" rid="B90">2003</xref>) for BP, but none of these focuses particularly on morphology. To our knowledge, the only morphological study to adopt the ideas on koineization is Finbow and O&#8217;Neill (<xref ref-type="bibr" rid="B45">2021</xref>), whose development of the mixed-paradigms of BP is adopted and expanded on below.</p>
<p>Historically, there arrived in Brazil three distinct paradigms for 2<sc>sg</sc> address: <italic>tu, voc&#234;</italic> and <italic>o senhor/a senhora</italic> &#8216;the lady/the lord&#8217;. Both <italic>voc&#234;</italic> and <italic>o senhor/a senhora</italic> marked deferential address, whereas <italic>tu</italic> marked non-deferential address. According to <italic>voc&#234;</italic>&#8217;s origin as noun phrase meaning &#8216;your mercy&#8217; (<italic>Vossa Merc&#234;</italic>), it historically displayed 3sg agreement in the verb and had 3sg pronominal forms (as does <italic>o senhor/a senhora</italic>), which contrasted with the dedicated, etymological verbal and pronominal forms for the <italic>tu</italic> subject pronoun. These differences are illustrated in <xref ref-type="table" rid="T1">Tables 1</xref> and <xref ref-type="table" rid="T2">2</xref>. In spoken BP, although <italic>o senhor/a senhora</italic> was maintained as a marker of deferential address, <italic>voc&#234;</italic> lost this function and came to be an alternative subject pronoun for non-deferential address alongside <italic>tu</italic>. Depending on the variety of BP, the etymological paradigms for <italic>voc&#234;</italic> and <italic>tu</italic> are either maintained (Belem, Florianopolis) or merged. When they are merged, the merger can either be in favour of the <italic>tu</italic> subject pronoun (Rio Grande do Sul) or the <italic>voc&#234;</italic> subject pronoun (South-East). The reasons for the victory of the specific pronoun are not important for the present study, but must largely have been a function of the frequency of such forms in the speech of emigrants to the relative regions. Regardless of which pronoun wins out, the principles which organise the merger of the two mixed paradigms are the same (<xref ref-type="bibr" rid="B45">Finbow &amp; O&#8217;Neill, 2021</xref>). In this article, we concentrate on the mixed paradigm in the South-East region of Brazil, which, being home to the cities of S&#227;o Paulo, Rio de Janeiro, and the state of Minas Gerais, represents the most populous region of the country and also the region, which is culturally, economically, and linguistically the most prestigious. Witness in <xref ref-type="table" rid="T3">Table 3</xref> the mixed paradigm for the <italic>voc&#234;</italic> subject pronoun in the speech of the city of S&#227;o Paulo.</p>
<table-wrap id="T1">
<label>Table 1</label>
<caption>
<p>The etymological pronominal and (partial) verbal forms corresponding to the <italic>tu</italic> subject pronoun.</p>
</caption>
<table>
<tbody>
<tr>
<td align="left" valign="top" colspan="7"><bold>Etymological <italic>tu</italic> &#8211; paradigm</bold></td>
</tr>
<tr>
<td align="left" valign="top"><bold>Subject</bold></td>
<td align="left" valign="top"><bold>+ prep</bold></td>
<td align="left" valign="top"><bold>+ com &#8216;with&#8217;</bold></td>
<td align="left" valign="top"><bold>reflexive</bold></td>
<td align="left" valign="top"><bold>direct object</bold></td>
<td align="left" valign="top"><bold>indirect object</bold></td>
<td align="left" valign="top"><bold>possessive</bold></td>
</tr>
<tr>
<td align="left" valign="top">tu</td>
<td align="left" valign="top">de ti</td>
<td align="left" valign="top">contigo</td>
<td align="left" valign="top">te</td>
<td align="left" valign="top">te</td>
<td align="left" valign="top">te</td>
<td align="left" valign="top">teu(s) tua(s)</td>
</tr>
<tr>
<td align="left" valign="top">verbs</td>
<td align="left" valign="top"><sc>pos imper</sc></td>
<td align="left" valign="top"><sc>neg imper</sc></td>
<td align="left" valign="top"><sc>prs.ind</sc></td>
<td align="left" valign="top"><sc>prs.sbj</sc></td>
<td align="left" valign="top"><sc>ipfv.ind</sc></td>
<td align="left" valign="top"><sc>pret</sc></td>
</tr>
<tr>
<td align="left" valign="top">&#8216;sing&#8217;<break/>&#8216;eat&#8217;<break/>&#8216;sleep&#8217;<break/>&#8216;say&#8217;<break/>&#8216;do&#8217;</td>
<td align="left" valign="top">canta<break/>come<break/>dorme<break/>diz<break/>faz</td>
<td align="left" valign="top">n&#227;o cantes<break/>n&#227;o comas<break/>n&#227;o durmas<break/>n&#227;o digas<break/>n&#227;o fa&#231;as</td>
<td align="left" valign="top">cantas<break/>comes<break/>dormes<break/>dizes<break/>fazes</td>
<td align="left" valign="top">cantes<break/>comas<break/>durmas<break/>digas<break/>fa&#231;as</td>
<td align="left" valign="top">cantavas<break/>comias<break/>dormias<break/>dizias<break/>fazias</td>
<td align="left" valign="top">cantaste<break/>comeste<break/>dormiste<break/>disseste<break/>fizeste</td>
</tr>
</tbody>
</table>
</table-wrap>
<table-wrap id="T2">
<label>Table 2</label>
<caption>
<p>The etymological pronominal and (partial) verbal forms corresponding to the <italic>voc&#234;</italic> subject pronoun.</p>
</caption>
<table>
<tbody>
<tr>
<td align="left" valign="top" colspan="7"><bold>Etymological <italic>voc&#234;</italic> &#8211; paradigm</bold></td>
</tr>
<tr>
<td align="left" valign="top"><bold>Subject</bold></td>
<td align="left" valign="top"><bold>+ prep</bold></td>
<td align="left" valign="top"><bold>+ com &#8216;with&#8217;</bold></td>
<td align="left" valign="top"><bold>reflexive</bold></td>
<td align="left" valign="top"><bold>direct object</bold></td>
<td align="left" valign="top"><bold>indirect object</bold></td>
<td align="left" valign="top"><bold>possessive</bold></td>
</tr>
<tr>
<td align="left" valign="top">voc&#234;</td>
<td align="left" valign="top">de si</td>
<td align="left" valign="top">consigo</td>
<td align="left" valign="top">se</td>
<td align="left" valign="top">o, -no, -lo<break/>a, -na, -la</td>
<td align="left" valign="top">lhe</td>
<td align="left" valign="top">seu(s) sua(s)</td>
</tr>
<tr>
<td align="left" valign="top">verbs</td>
<td align="left" valign="top"><sc>pos imper</sc></td>
<td align="left" valign="top"><sc>neg imper</sc></td>
<td align="left" valign="top"><sc>prs.ind</sc></td>
<td align="left" valign="top"><sc>prs.sbj</sc></td>
<td align="left" valign="top"><sc>ipfv.ind</sc></td>
<td align="left" valign="top"><sc>pret</sc></td>
</tr>
<tr>
<td align="left" valign="top">&#8216;sing&#8217;<break/>&#8216;eat&#8217;<break/>&#8216;sleep&#8217;<break/>&#8216;say&#8217;<break/>&#8216;do&#8217;</td>
<td align="left" valign="top">cante<break/>coma<break/>durma<break/>diga<break/>fa&#231;a</td>
<td align="left" valign="top">n&#227;o cante<break/>n&#227;o coma<break/>n&#227;o durma<break/>n&#227;o diga<break/>n&#227;o fa&#231;a</td>
<td align="left" valign="top">canta<break/>come<break/>dorme<break/>diz<break/>faz</td>
<td align="left" valign="top">cante<break/>coma<break/>durma<break/>diga<break/>fa&#231;a</td>
<td align="left" valign="top">cantava<break/>comia<break/>dormia<break/>dizia<break/>fazia</td>
<td align="left" valign="top">cantou<break/>comeu<break/>dormiu<break/>disse<break/>fez</td>
</tr>
</tbody>
</table>
</table-wrap>
<table-wrap id="T3">
<label>Table 3</label>
<caption>
<p>New <italic>voc&#234;</italic> mixed-paradigm for 2<sc>sg</sc> non-deferential address in the spoken BP of the city of S&#227;o Paulo. The forms in italics derive historically from the <italic>voc&#234;</italic> paradigm, the forms in bold from the <italic>tu</italic> paradigm; the underlined forms are novel creations.</p>
</caption>
<table>
<tbody>
<tr>
<td align="left" valign="top" colspan="7"><bold>New <italic>voc&#234;</italic> &#8211; paradigm</bold></td>
</tr>
<tr>
<td align="left" valign="top"><bold>Subject</bold></td>
<td align="left" valign="top"><bold>+ prep</bold></td>
<td align="left" valign="top"><bold>+ com &#8216;with&#8217;</bold></td>
<td align="left" valign="top"><bold>reflexive</bold></td>
<td align="left" valign="top"><bold>direct object</bold></td>
<td align="left" valign="top"><bold>indirect object</bold></td>
<td align="left" valign="top"><bold>possessive</bold></td>
</tr>
<tr>
<td align="left" valign="top"><italic>voc&#234;</italic></td>
<td align="left" valign="top"><underline>de voc&#234;</underline></td>
<td align="left" valign="top"><underline>com voc&#234;</underline></td>
<td align="left" valign="top"><italic>se</italic> ~ <underline>&#248;</underline></td>
<td align="left" valign="top"><bold>te</bold></td>
<td align="left" valign="top"><bold>te</bold></td>
<td align="left" valign="top"><italic>seu(s)- sua(s)</italic></td>
</tr>
<tr>
<td align="left" valign="top">verbs</td>
<td align="left" valign="top"><sc>pos imper</sc></td>
<td align="left" valign="top"><sc>neg imper</sc></td>
<td align="left" valign="top"><sc>prs.ind</sc></td>
<td align="left" valign="top"><sc>prs.sbj</sc></td>
<td align="left" valign="top"><sc>ipfv.ind</sc></td>
<td align="left" valign="top"><sc>pret</sc></td>
</tr>
<tr>
<td align="left" valign="top">&#8216;sing&#8217;<break/>&#8216;eat&#8217;<break/>&#8216;sleep&#8217;<break/>&#8216;say&#8217;<break/>&#8216;do&#8217;</td>
<td align="left" valign="top"><bold>canta</bold> ~ <italic>cante</italic><break/><bold>come</bold> ~ <italic>coma</italic><break/><bold>dorme</bold> ~ <italic>durma</italic><break/><bold>diz</bold> ~ <italic>diga</italic><break/><bold>faz</bold> ~ <italic>fa&#231;a</italic></td>
<td align="left" valign="top">n&#227;o <underline>canta</underline> ~ <italic>cante</italic><break/>n&#227;o <underline>come</underline> ~ <italic>coma</italic><break/>n&#227;o <underline>dorme</underline> ~ <italic>durma</italic><break/>n&#227;o <underline>diz</underline> ~ <italic>diga</italic><break/>n&#227;o <underline>faz</underline> ~ <italic>fa&#231;a</italic></td>
<td align="left" valign="top"><italic>canta</italic><break/><italic>come</italic><break/><italic>dorme</italic><break/><italic>diz</italic><break/><italic>faz</italic></td>
<td align="left" valign="top"><italic>cante</italic><break/><italic>coma</italic><break/><italic>durma</italic><break/><italic>diga</italic><break/><italic>fa&#231;a</italic></td>
<td align="left" valign="top"><italic>cantava</italic><break/><italic>comia</italic><break/><italic>dormia</italic><break/><italic>dizia</italic><break/><italic>fazia</italic></td>
<td align="left" valign="top"><italic>cantou</italic><break/><italic>comeu</italic><break/><italic>dormiu</italic><break/><italic>disse</italic><break/><italic>fez</italic></td>
</tr>
</tbody>
</table>
</table-wrap>
<p>As noted, the development of this mixed paradigm corresponds to the principles of new dialect formation whereby the morphological variants which end up forming part of the new mixed paradigm tend to be the most morphologically simple ones, in the sense that they are more morphologically transparent, less morphologically marked and thus display less allomorphy. Accordingly, in S&#227;o Paulo, the subject pronoun <italic>voc&#234;</italic> alternates with the object pronoun <italic>te</italic>, etymological to the <italic>tu</italic> paradigm, and not with the pronouns to which it etymologically corresponds (direct object <italic>o[s], a[s], -no[s], -na[s], -lo[s], -la[s];</italic> indirect object <italic>lhe[s]</italic>) since <italic>te</italic> is allomorph-free and also displays a greater inflexional range since it has the same form for both accusative and dative case.</p>
<p>The basic idea underlying the process of koineization is that when speakers of different dialects interact, they are confronted with different ways to say the same thing. The result is rampant variation in the first generation, which is then levelled in subsequent generations in accordance with the aforementioned principles of koineization. These principles explain not only the victory of <italic>te</italic> in S&#227;o Paulo but also the fact that, with noted exceptions, all verb forms correspond etymologically to the <italic>voc&#234;</italic>-paradigm and not the <italic>tu</italic>-paradigm. The latter are more marked than the former since they contain the -<italic>s</italic> marker of person and number (c.f. <italic>cantas vs. canta; cantavas vs. cantava</italic>). The noted exceptions are the forms of the imperative (henceforth <sc>imper</sc>) since there is still much variation between those which etymologically derive from the <italic>voc&#234;</italic>-paradigm (henceforth <sc>v-imper</sc>) and those which derive from the <italic>tu</italic>-paradigm (henceforth <sc>t-imper</sc>). The competing forms of the 2<sc>sg.imper</sc> are, with one exception, continuants of the etymological forms. Thus, <sc>v-imper</sc> is syncretic with 1/3<sc>sg.prs.sbj</sc> in both positive and negative contexts and <sc>t-imper</sc> is syncretic with 3<sc>sg.prs.ind</sc> in the positive imperative. For negative forms of this imperative, however, it is an innovation of BP that these forms are not the etymological ones deriving from the <italic>tu</italic>-paradigm (a form syncretic with 2<sc>sg.prs.sbj</sc> e.g., <italic>n&#227;o cantes</italic> &#8216;don&#8217;t sing!&#8217;; <italic>n&#227;o comas</italic> &#8216;don&#8217;t eat!&#8217;, <italic>n&#227;o durmas</italic> &#8216;don&#8217;t sleep!&#8217;, <italic>n&#227;o fa&#231;as</italic> &#8216;don&#8217;t do [it]!&#8217;) but a novel form which is identical to the positive imperative (e.g., <italic>n&#227;o canta, n&#227;o come, n&#227;o dorme, n&#227;o faz</italic>). For simplicity and clarity in the exposition, however, this novel BP imperative will also be referred to as <sc>t-imper</sc>.</p>
<p>The variation between <sc>v-imper</sc> and <sc>t-imper</sc> is the topic of this article. Within the koineization literature, it is accepted that variation can persist into future generations; however, in such cases, the different variants are usually assigned different sociolinguistic, stylistic, or even grammatical functions in a process referred to as reallocation<xref ref-type="fn" rid="n1">1</xref> (Britain &amp; Trudgill, 2005a; <xref ref-type="bibr" rid="B116">Trudgill, 1986</xref>). As shall be explained, a number of authors have suggested specific ways in which this variation is being reallocated. The results of their experiments are, however, inconclusive, and the linguistic basis of this reallocation seems, to us, to be tenuous. We hypothesise that this variation is being reallocated with reference to concepts relating to the distinction between deferential/non-deferential address, and we carry out an experiment to test this hypothesis. Our results are also inconclusive; we therefore entertain the possibility that this variation constitutes a type of free or idiosyncratic variation for speakers. Previous studies on idiosyncratic variation (<xref ref-type="bibr" rid="B34">Dorian, 2010a</xref>) have suggested that this phenomenon is influenced by the social ecology and structure of the society. However, the generalisations put forward seem, at first sight, not applicable to Brazil. We analyse the relationship between spoken BP and the written standard and argue that the linguistic distance between the two could contribute to the existence of idiosyncratic variation. We conclude with the suggestion that idiosyncratic variation needs to be taken much more seriously.</p>
</sec>
<sec>
<title>2. Imperatives in BP: An overview</title>
<p>In those regions in which <italic>tu</italic> is either not attested or has a minimal or socially specified usage (for an overview see <xref ref-type="bibr" rid="B39">Faraco, 1996</xref>; <xref ref-type="bibr" rid="B101">Scherre et al., 2015</xref>) the subject pronouns <italic>voc&#234;</italic>-<sc>sg</sc>/<italic>voces</italic>-<sc>pl</sc> are the markers of non-deferential address and contrast with the pronouns <italic>o senhor/a senhora</italic>-<sc>sg</sc>, <italic>os senhores/as senhoras</italic>-<sc>pl</sc> for deferential address. Both sets of pronouns historically displayed 3<sup>rd</sup> person agreement, whence their standard imperative forms. However, as noted above, spoken BP has two alternative forms for <sc>sg.imper</sc> in contexts of non-deferential address: <sc>v-imper</sc> and <sc>t-imper</sc>. To our knowledge, no variation has been reported for <sc>pl.imper</sc> (however, see 3.1.1 and O&#8217;Neill, 2024) whose standard forms are syncretic with 3<sc>pl.prs.sbj</sc>. In <xref ref-type="table" rid="T4">Table 4</xref> we give examples of the different types of <sc>imper</sc> in BP for non-deferential address only in accordance with the traditional conjugational class distinctions of Portuguese (traditionally classed as -<italic>ar, -er</italic> and -<italic>ir</italic> verbs) and for the irregular verb <italic>fazer</italic> &#8216;do&#8217;.</p>
<table-wrap id="T4">
<label>Table 4</label>
<caption>
<p>The different morphological variants of <sc>imper</sc> in spoken BP for the verbs <italic>fazer</italic> &#8216;do&#8217;, <italic>cantar</italic> &#8216;sing&#8217;, <italic>comer</italic> &#8216;eat&#8217; and <italic>dormir</italic> &#8216;sleep&#8217; in BP.</p>
</caption>
<table>
<tbody>
<tr>
<td align="left" valign="top" rowspan="3"><bold>Gloss</bold></td>
<td align="left" valign="top" rowspan="3"><bold><sc>conj</sc></bold></td>
<td align="left" valign="top" colspan="4"><bold><sc>sg</sc> &#8211; pronoun <italic>voc&#234;</italic></bold></td>
<td align="left" valign="top" colspan="2"><bold><sc>pl</sc> &#8211; pronoun <italic>voc&#234;s</italic></bold></td>
</tr>
<tr>
<td align="left" valign="top" colspan="2"><bold><sc>t-imper</sc></bold></td>
<td align="left" valign="top" colspan="2"><bold><sc>v-imper</sc></bold></td>
<td align="left" valign="top"></td>
<td align="left" valign="top"></td>
</tr>
<tr>
<td align="left" valign="top"><bold>positive</bold></td>
<td align="left" valign="top"><bold>negative</bold></td>
<td align="left" valign="top"><bold>positive</bold></td>
<td align="left" valign="top"><bold>negative</bold></td>
<td align="left" valign="top"><bold>positive</bold></td>
<td align="left" valign="top"><bold>negative</bold></td>
</tr>
<tr>
<td align="left" valign="top">do!</td>
<td align="left" valign="top">irregular</td>
<td align="left" valign="top"><italic>faz</italic></td>
<td align="left" valign="top"><italic>n&#227;o faz</italic></td>
<td align="left" valign="top"><italic>fa&#231;a</italic></td>
<td align="left" valign="top"><italic>n&#227;o fa&#231;a</italic></td>
<td align="left" valign="top"><italic>fa&#231;am</italic></td>
<td align="left" valign="top"><italic>n&#227;o fa&#231;am</italic></td>
</tr>
<tr>
<td align="left" valign="top">sing!</td>
<td align="left" valign="top">-<italic>ar</italic> (1<sup>st</sup> conj)</td>
<td align="left" valign="top"><italic>canta</italic></td>
<td align="left" valign="top"><italic>n&#227;o canta</italic></td>
<td align="left" valign="top"><italic>cante</italic></td>
<td align="left" valign="top"><italic>n&#227;o cante</italic></td>
<td align="left" valign="top"><italic>cantem</italic></td>
<td align="left" valign="top"><italic>n&#227;o cantem</italic></td>
</tr>
<tr>
<td align="left" valign="top">eat!</td>
<td align="left" valign="top">-<italic>er</italic> (2<sup>nd</sup> conj)</td>
<td align="left" valign="top"><italic>come</italic></td>
<td align="left" valign="top"><italic>n&#227;o come</italic></td>
<td align="left" valign="top"><italic>coma</italic></td>
<td align="left" valign="top"><italic>n&#227;o coma</italic></td>
<td align="left" valign="top"><italic>comam</italic></td>
<td align="left" valign="top"><italic>n&#227;o comam</italic></td>
</tr>
<tr>
<td align="left" valign="top">sleep!</td>
<td align="left" valign="top">-<italic>ir</italic> (3<sup>rd</sup> conj)</td>
<td align="left" valign="top"><italic>dorme</italic></td>
<td align="left" valign="top"><italic>n&#227;o dorme</italic></td>
<td align="left" valign="top"><italic>durma</italic></td>
<td align="left" valign="top"><italic>n&#227;o durma</italic></td>
<td align="left" valign="top"><italic>durmam</italic></td>
<td align="left" valign="top"><italic>n&#227;o durmam</italic></td>
</tr>
</tbody>
</table>
</table-wrap>
<sec>
<title>2.1. Previous studies on imper in BP</title>
<p>The extensive morphological variation observed in BP has been well-documented in numerous studies (<xref ref-type="bibr" rid="B6">Barbosa et al., 2017</xref>; <xref ref-type="bibr" rid="B48">Guy, 1983</xref>; <xref ref-type="bibr" rid="B102">Scherre &amp; Naro, 1998</xref>; <xref ref-type="bibr" rid="B94">Scherre, 2002</xref>, <xref ref-type="bibr" rid="B98">2008</xref>, i.a.). The imperative mood is no exception, exhibiting rates of variation that set BP apart from many other Romance languages. As a result, this phenomenon has garnered significant attention in linguistic research, especially since the spoken forms frequently diverge from the prescriptive grammatical ones (<xref ref-type="bibr" rid="B92">Sampaio, 2001</xref>; <xref ref-type="bibr" rid="B94">Scherre, 2002</xref>, <xref ref-type="bibr" rid="B96">2004</xref>, <xref ref-type="bibr" rid="B97">2007</xref>, <xref ref-type="bibr" rid="B98">2008</xref>, <xref ref-type="bibr" rid="B99">2012</xref>; <xref ref-type="bibr" rid="B100">Scherre et al., 2007</xref>; <xref ref-type="bibr" rid="B103">Scherre &amp; Naro, 2014</xref>).</p>
<p>The studies on <sc>sg.imper</sc> can be divided into two categories: (a) variationist studies following a Labovian methodology and (b) experimental studies. With reference to the first type, those of Scherre stand out for the amount of data analysed and its geographical extension (<xref ref-type="bibr" rid="B96">Scherre, 2004</xref>, <xref ref-type="bibr" rid="B97">2007</xref>, <xref ref-type="bibr" rid="B98">2008</xref>, <xref ref-type="bibr" rid="B99">2012</xref>; <xref ref-type="bibr" rid="B100">Scherre et al., 2007</xref>). Regarding the difference between <sc>v-imper</sc> and <sc>t-imper</sc>, she concludes that the variation observed does not correlate with the presence of the etymological subject pronouns (<italic>tu</italic> and <italic>voc&#234;</italic>), that both forms have identical truth values and lack both pejorative connotations (<xref ref-type="bibr" rid="B97">Scherre, 2007</xref>) and distinctions related to social distance (<xref ref-type="bibr" rid="B97">Scherre, Cardoso et al., 2007</xref>). In her studies, the main conditioning factor for the different forms is the geographic location. The author (<xref ref-type="bibr" rid="B97">Scherre, 2007</xref>) provides a comprehensive mapping of <sc>t-imper</sc> vs. <sc>v-imper</sc> across different regions of Brazil, on the basis of an impressive amount of spontaneous speech data collected from various regions between the 1970s and 1990s. The findings indicate that <sc>t-imper</sc> are more frequent in the Central-West, South, and Southeast regions of Brazil. In contrast, the Northeast region exhibits a higher frequency of <sc>v-imper</sc>, or presents a balanced distribution between the two forms (see also <xref ref-type="bibr" rid="B85">Oliveira, 2017</xref>). The general conclusion is that the patterns governing the grammatical variation of imperatives in BP reflect systematic diatopic regularities. These patterns characterise distinct varieties of BP, shaped by regional factors as well as rural/urban and interior/capital distinctions, all of which contribute to the broader landscape of spoken linguistic variation in BP. Notably, however, very few of the areas analysed showed a categorical preference for a specific imperative form. Instead, most regions and cities exhibited a high degree of variation between <sc>v-imper</sc> and <sc>t-imper</sc>. This variation is particularly evident in some cities within the states of Bahia (BA) and Cear&#225; (CE) (<xref ref-type="bibr" rid="B99">Scherre, 2012</xref>). For example, in Santo Ant&#244;nio de Jesus (BA), <sc>t-imper</sc> appeared in 56% of cases, while in Fortaleza (CE) this number was 40%. Note that in both regions, the preferred subject pronoun was <italic>voc&#234;</italic>.</p>
<p>Other specific factors that the variationist studies have proposed as potential constraints on the appearance of <sc>t-imper</sc> over <sc>v-imper</sc> include the use of clitics in pre-verbal position (<xref ref-type="bibr" rid="B25">Cardoso, 2006</xref>; <xref ref-type="bibr" rid="B100">Scherre et al., 2007</xref>) and the presence of vocatives (<xref ref-type="bibr" rid="B100">Scherre et al., 2007</xref>), both features of spoken BP. Sentence polarity has also been identified as a significant factor (<xref ref-type="bibr" rid="B25">Cardoso, 2006</xref>; <xref ref-type="bibr" rid="B100">Scherre et al., 2007</xref>), with negative imperatives tending to favour <sc>v-imper</sc>. The explanation offered for this is related to the ability of BP to allow both pre- and postverbal negation, as well as double negation (e.g., &#8216;don&#8217;t do that&#8217; can be realised as <italic>n&#227;o faz/fa&#231;a isso; faz/fa&#231;a isso n&#227;o; n&#227;o faz/fa&#231;a isso</italic> n&#227;o). The standard form of negation (preverbal) most readily displays <sc>v-imper</sc> (<italic>n&#227;o fa&#231;a</italic>).</p>
<p>Finally, Scherre (<xref ref-type="bibr" rid="B95">2003</xref>)) also highlights a tendency toward the increased use of <sc>t-imper</sc> over time via a diachronic analysis of written dialogues in the <italic>Turma da M&#244;nica</italic> &#8216;Monica and Friends&#8217; comic books. This use of <sc>t-imper</sc> is linked to a growing desire to represent in writing the linguistic practices of spoken BP. Similar conclusions and the same historic tendency towards <sc>t-imper</sc> can be found in other studies (<xref ref-type="bibr" rid="B2">Andrade et al., 2007</xref>; <xref ref-type="bibr" rid="B86">Paredes Silva et al., 2000</xref>). Note that whilst these variationist studies have identified various factors which seem to be influential regarding the selection of <sc>t/v-imper</sc>, no systematic conditioning factors have been found, but rather tendencies.</p>
<p>Regarding the experimental studies, Lamberti and Schwenter (<xref ref-type="bibr" rid="B63">2018</xref>), drawing on work carried out on variation in <sc>imper</sc> in Argentinian Spanish (<xref ref-type="bibr" rid="B53">Johnson, 2013</xref>, <xref ref-type="bibr" rid="B54">2016</xref>), proposed that the selection of <sc>t-imper</sc>/<sc>v-imper</sc> was correlated with the pragmatic notion of &#8216;immediacy&#8217;. They hypothesised that the more immediate the context, the more likely speakers would be to use <sc>t-imper</sc>. To test this hypothesis, they devised an experiment based on online cloze forced-choice tasks in which participants had to choose between <sc>t-imper</sc> and <sc>v-imper</sc> in different contexts of immediacy, distinguished by different types of adverbs. The results (376 participants) revealed that participants chose significantly more <sc>v-imper</sc> in the non-immediate contexts, characterised by the adverbs <italic>nunca</italic> &#8216;never&#8217;, <italic>sempre</italic> &#8216;always&#8217;, and <italic>a vida toda</italic> &#8216;all your life&#8217;, whereas they chose more <sc>t-imper</sc> in immediate contexts, characterised by the adverbs <italic>agora</italic> &#8216;now&#8217;, <italic>logo</italic> &#8216;immediately&#8217;, <italic>hoje</italic> &#8216;today&#8217;, etc. Building on this study, Schwenter and Hoff (<xref ref-type="bibr" rid="B106">2023</xref>) devised a more elaborate online survey in which, instead of having cloze tasks with different adverbs, the different +/&#8211; immediate contexts were explained in some detail, and speakers were forced to choose between sentences with a <sc>v-imper</sc> or <sc>t-imper</sc>. The results (178 respondents) revealed the same correlations in addition to more <sc>v-imper</sc> with negative polarity. Despite such correlations, however, neither the notion of immediacy nor negative polarity could alone account for the morphological variation observed. As an example of the considerable variation observed, the authors noted that participants in S&#227;o Paulo &#8211; one of the two cities where the experiment was conducted &#8211; chose <sc>v-imper</sc> and <sc>t-imper</sc> at nearly identical rates in affirmative non-immediate contexts (<xref ref-type="bibr" rid="B106">2023: 337</xref>).<xref ref-type="fn" rid="n2">2</xref> Plus, the authors highlighted the prevalence of <sc>v-imper</sc> in contexts that are not necessarily temporally non-immediate, but lack a specific addressee. The examples they give are imperatives from billboards and advertisements in print or online. They associate this as being non-prototypical of here and now imperatives and therefore, subsume the notion of &#8216;immediacy&#8217; with that of &#8216;presumed settledness&#8217; (<xref ref-type="bibr" rid="B56">Kaufmann, 2002</xref>, <xref ref-type="bibr" rid="B57">2005</xref>; <xref ref-type="bibr" rid="B113">Thomason &amp; Gupta, 1980</xref>), which implies that a proposition has already been decided and therefore, in the future, it is either guaranteed to occur or the speaker has great confidence in it occurring.</p>
<p>With reference to affirmative imperatives, they claim that the <sc>t-imper</sc> forms would be used when speakers &#8220;presume as settled&#8221; that the listener was otherwise not going to perform the action being ordered. With negative imperatives, it would be the opposite, i.e., more <sc>t-imper</sc> forms when speakers &#8216;presume as settled&#8217; that the listener was going to perform the action ordered. They justify the relationship between &#8216;immediacy&#8217; and &#8216;presumed settledness&#8217; via speakers wishing to appear confident about the need for the command/prohibition and therefore they emphasize it and highlight its urgency/immediacy. However, the presumption of settledness can at times be in opposition to the notion of &#8216;immediacy&#8217;. For example, one can imagine a number of situations in which one is sure that a person is going to carry out an order, but still wants the order to be carried out urgently or just wants to be emphatic.</p>
<p>In sum, the attempt to include immediacy within notions of presumed settledness seems rather tenuous and contradictory when applied to imperatives. Also, it is not clear how speakers would acquire a feature which corresponds to criteria that can be conflicting with respect to real-life contexts. The feature &#8216;immediacy&#8217;, which has a distinct meaning and clear pragmatic function, does however, seem relevant in imperative contexts. Nevertheless, as conceded by the authors, this feature alone could not account for the variation between <sc>v-imper</sc>/<sc>t-imper</sc> and especially the prevalence of <sc>v-imper</sc> in written media.</p>
<p>This summary of studies indicates the prevalence of variation in the use of the <sc>sg.imper</sc> in BP and the lack of any one grammatical, geographical, or social factor which can categorically predict this variation. Despite the lack of categorical controlling factors, there are some reliable correlations: the geographical origin of the speaker, the pragmatic context of &#8216;immediacy&#8217; and the grammatical context of negative polarity. We think, however, there is an additional social factor which has been overlooked: the degree of social distance/solidarity between speakers. In what follows, we justify our hypothesis and present an experiment to test this hypothesis.</p>
</sec>
<sec>
<title>2.2. Our hypothesis</title>
<p>The imperative is not the only place in the BP mixed paradigms which shows variation between the two etymological feeder forms. In southern Brazil, where the subject pronoun <italic>tu</italic> predominates, there is variation in the possessive pronouns: etymological <italic>teu(s)</italic> alternates with <italic>seu(s)</italic> from the historical <italic>voc&#234;</italic> paradigm. Regarding this variation, several studies have revealed that <italic>teu</italic>-possessives correlate strongly with concepts of solidarity and social proximity and also asymmetrical power relations of superior to inferior, such that the <italic>seu/teu</italic> contrast within a paradigm with the subject pronoun <italic>tu</italic> is functioning as a type of deferential/non-deferential marker (<xref ref-type="bibr" rid="B4">Arduin, 2005</xref>; <xref ref-type="bibr" rid="B87">Loregian-Penkal, 2004</xref>; <xref ref-type="bibr" rid="B71">Menon, 1995</xref>; <xref ref-type="bibr" rid="B72">Menon &amp; Loregian-Penkal, 2003</xref>). As explained above, in Brazil deferential address is marked by the use of a specific deferential subject pronoun: <italic>o senhor/a senhora</italic> (sg), <italic>os senhores/as senhoras</italic> (pl), which is also present in the aforementioned varieties. What seems to be happening is that a nuanced system of deferential address is evolving in sg, whereby the most deferential type of address is marked by the use of the pronoun <italic>o senhor/a senhora</italic> but then, when the subject pronoun <italic>tu</italic> is used, one can still express degrees of social distance/solidarity via the <italic>teu/seu</italic> variation in the possessive pronouns. Despite previous studies noting that there seemed to be no differences regarding the differential use of <sc>t-imper/v-imper</sc> and social factors such as [+/- distance] (<xref ref-type="bibr" rid="B100">Scherre et al., 2007, p. 210</xref>), based on the aforementioned <italic>seu/teu</italic> distinctions and our own impressions, we hypothesize that same phenomenon could be responsible for the variation in <sc>imper</sc>. That is, alongside the standard way to mark deferential address explicitly via a subject pronoun, there is also a system within the non-deferential address pronoun, <italic>voc&#234;</italic>, whereby one can mark the presence (or lack of) social distance/power relationships/solidarity via the use of the imperative: <sc>t-imper</sc> marks less social distance and more solidarity than <sc>v-imper</sc>. In <xref ref-type="table" rid="T5">Table 5</xref>, we present a schema for this system whereby A represents the most deferential type of address and C the most non-deferential type/more relations of solidarity.</p>
<table-wrap id="T5">
<label>Table 5</label>
<caption>
<p>The different ways to say &#8216;Are you ok? Come in and make yourself at home&#8217;, in accordance with our hypothesized nuanced system of address.</p>
</caption>
<table>
<tbody>
<tr>
<td align="left" valign="top">A</td>
<td align="left" valign="top"><italic>O senhor est&#225; bem? Entre e fique &#224; vontade</italic></td>
<td align="left" valign="top"><italic>o/a senhor(a) +</italic> <sc>v-imper</sc></td>
</tr>
<tr>
<td align="left" valign="top">B</td>
<td align="left" valign="top"><italic>Voc&#234; est&#225; bem? Entre e fique &#224; vontade</italic></td>
<td align="left" valign="top"><italic>voc&#234;</italic> + <sc>v-imper</sc></td>
</tr>
<tr>
<td align="left" valign="top">C</td>
<td align="left" valign="top"><italic>Voc&#234; est&#225; bem? Entra e fica &#224; vontade</italic></td>
<td align="left" valign="top"><italic>voc&#234;</italic> + <sc>t-imper</sc></td>
</tr>
</tbody>
</table>
</table-wrap>
<p>Such an evolution is not surprising since, generally speaking, Portuguese tends to have complex systems of address with nuanced ways to express the presence (or lack of) social distance/power relationships/solidarity/deference. For example, in EP, there exist multiple forms of address, including <italic>voc&#234;</italic>, which marks distance but not deference (see <xref ref-type="bibr" rid="B26">Carreira, 2004</xref>; <xref ref-type="bibr" rid="B46">Gouveia, 2008</xref> i.a., for pragmatic distinctions). Space restrictions do not allow for a full discussion of the pragmatic and social implications related to what is traditionally referred to as the difference between deferential/non-deferential address. In what follows, therefore we shall adopt this traditional terminology whilst acknowledging that the reality is much more complex.</p>
<p>Our hypothesis is that within the usage of the non-deferential pronoun <italic>voc&#234;</italic>, <sc>t-imper</sc> will be used more frequently in less deferential/more socially proximate contexts, while <sc>v-imper</sc> in more deferential/less socially proximate contexts. This distinction intersects with the concept of &#8216;immediacy&#8217; since one is more likely to give orders which need to be carried out immediately to people with whom one has close bonds of solidarity. Likewise, the prevalence of <sc>v-imper</sc> on billboards reflects the impersonal nature of such signs, whereas the prevalence of <sc>t-imper</sc> with vocatives and features more characteristic of spoken BP reflects more personal, socially proximate relationships. Finally, if this nuanced form of address system is a change in progress, then the prediction from koineization would be that it is attested more widely in unmarked vs. marked contexts, which would correspond to the noted prevalence of <sc>v-imper</sc> in (marked) negative contexts. Note also that cross-linguistic studies on <sc>imper</sc> highlight polarity asymmetries whereby features present in positive <sc>imper</sc> are neutralised in negative <sc>imper</sc> (<xref ref-type="bibr" rid="B1">Aikhenvald, 2010, pp. 165&#8211;197;</xref> <xref ref-type="bibr" rid="B126">Van Olmen, 2024</xref>).</p>
<p>Our main hypothesis, however, is that the most significant conditioning factor between the variation between <sc>t-imper/v-imper</sc> is the social factor loosely related to the distinction between deferential/non-deferential address. On the basis of this hypothesis, an experiment was designed in which positive and negative imperatives were elicited from speakers. The pragmatic factor of immediacy was kept constant, but our supposed determinative social factors were controlled for.</p>
</sec>
</sec>
<sec>
<title>3. Experimental design</title>
<p>The experiment involved presenting participants with different images, each depicting distinct individuals: a group of older businessmen, a group of children, an elderly woman, a young man in a suit, a silhouette. Participants were instructed that the silhouette represented their best friend or sibling, while the young man in the suit was meant to symbolize their boss or supervisor at work, with whom they had a friendly yet professional relationship. Participants were then prompted to ask the people in the images questions to determine which pronouns they would naturally use for each figure. All participants used the deferential subject pronoun (<italic>a senhora/os senhores</italic>) with the image of the elderly woman and the group of older businessmen but the non-deferential subject pronoun (<italic>voc&#234;/voc&#234;s</italic>) with the silhouette and the group of children. For the image of the young man in the suit, one participant used the deferential form of address (<italic>o senhor</italic>) whilst the others used the non-deferential form. This person was instructed that the supposed imagined relationship with this person was respectful, but it was not necessary to use this form of address, and that <italic>voc&#234;</italic> was more appropriate. A number of specific friendly work-based questions were elicited with the image of the young man in the suit to ensure that (a) <italic>voc&#234;</italic> was consistently being used and (b) to reinforce that the relationship was a work-based and hierarchical one. At this point in the experiment the image of the elderly women and the old business men were disregarded since the aim of the experiment was to investigate the use of the imperatives with the pronoun <italic>voc&#234;</italic> and these images had only been included to confirm that speakers did have a distinction between deferential and non-deferential address based on the subject pronouns <italic>(voc&#234; vs. o/a senhor[a], voc&#234;s vs. os senhores/as senhoras</italic>) and that they were using the <italic>voc&#234;</italic> form for both their friend/sibling and their young boss/supervisor = image of the young man in the suit. The image of the children was not disregarded, however, since it was deemed necessary to include a plural context in the second phase of the experiment to function as distractor forms.</p>
<p>In this second phase, each of the different images was placed (individually) in front of the participants, and they were told to imagine that they were speaking directly to the person/children in this image. Participants were then shown another set of images illustrating various actions and were asked to identify the actions and produce imperative verb forms (in the positive and negative) in an emergency or rushed context; this putative environmental conditioning factor was kept constant for all elicitations. Note that beforehand, participants had identified all verbs depicted in the images using their infinitive forms. Note also that previous pilot studies had indicated that participants often exhibited serial effects, meaning they would produce the same type of verb forms in a fixed pattern, e.g., all <sc>t-imper</sc>. To mitigate this, the experiment was broken up by map-tasks and question elicitations. Elicitation of <sc>sg.imper</sc> was also interspersed with that of <sc>pl.imper</sc>. When the image changed, however, participants were required to ask the new addressee questions to ensure they were focused on the shift in interlocutor.</p>
<p>In accordance with the different images, the following distinct contexts were created in which the non-deferential subject pronouns were used, and negative and positive imperatives were elicited.</p>
<list list-type="order">
<list-item><p>Singular, highly familiar (friend/sibling).</p></list-item>
<list-item><p>Singular, less familiar (young boss/supervisor).</p></list-item>
<list-item><p>Plural, familiar (group of children).</p></list-item>
</list>
<p>The experiments were conducted in two Brazilian cities: Araraquara (S&#227;o Paulo state) and Belo Horizonte (Minas Gerais state capital). The selection of these locations was based on the availability of trained research assistants &#8211; native Brazilian linguists with PhDs &#8211; who facilitated the experiments and recruited participants. The first author was present at all sessions to oversee the recordings, which were captured using a Zoom H6 Handy Recorder with a shotgun microphone capsule (SGH-6).</p>
<p>Participants were recruited from the research assistants&#8217; social circles (friends, colleagues, or fellow students), and the experiments took place in informal settings. The relaxed environment helped ensure that participants did not feel as though they were being tested on their language proficiency; instead, they treated the activity as a fun game. All participants received a small compensation for their involvement and signed a consent form providing details about their age and educational background. The consent form also confirmed that the project had received approval from a University ethics committee.<xref ref-type="fn" rid="n3">3</xref></p>
<p>The participant pool included four men and three women in Araraquara and three men and three women in Belo Horizonte. Their ages ranged from 20 to 52, and all had completed mandatory secondary education (<italic>ensino m&#233;dio</italic>), with most either currently studying at or having attended university. It must be stated, therefore, that this sample is not representative of the broader Brazilian population, as the participants had significantly more years of schooling than the national average.</p>
<p>The selection of verbs for the study was based on two criteria: ease of elicitation through images and an even distribution across conjugation classes, as conjugation class was included in case it was a potential conditioning factor. The traditional Portuguese conjugation classification, however, was not used since an additional category for irregular verbs<xref ref-type="fn" rid="n4">4</xref> was introduced to account for morphological irregularities in some imperative forms. The list of verbs included in each category is presented in <xref ref-type="table" rid="T6">Table 6</xref>. As stated, these verbs were elicited in both positive and negative contexts.</p>
<table-wrap id="T6">
<label>Table 6</label>
<caption>
<p>Verbs used in the experiment.</p>
</caption>
<table>
<tbody>
<tr>
<td align="left" valign="top"><bold>Class</bold></td>
<td align="left" valign="top"><bold>Number</bold></td>
<td align="left" valign="top"><bold>Lexemes</bold></td>
</tr>
<tr>
<td align="left" valign="top">irregular</td>
<td align="left" valign="top">8</td>
<td align="left" valign="top"><italic>dar</italic> &#8216;give&#8217;, <italic>dizer</italic> &#8216;say&#8217;, <italic>fazer</italic> &#8216;do&#8217;, <italic>ir</italic> &#8216;go&#8217;, <italic>p&#244;r &#8216;</italic>put&#8217;, <italic>trazer</italic> &#8216;bring&#8217;, <italic>ver</italic> &#8216;see&#8217;, <italic>vir</italic> &#8216;come&#8217;</td>
</tr>
<tr>
<td align="left" valign="top"><italic>-ar</italic> verbs (1<sup>st</sup>)</td>
<td align="left" valign="top">8</td>
<td align="left" valign="top"><italic>cantar</italic> &#8216;sing&#8217;, <italic>colocar</italic> &#8216;put&#8217;, <italic>estressar</italic> &#8216;stress&#8217;, <italic>esperar</italic> &#8216;wait&#8217;, <italic>falar</italic> &#8216;speak&#8217;, <italic>lavar</italic> &#8216;wash&#8217;, <italic>pular</italic> &#8216;jump&#8217;, <italic>tirar</italic> &#8216;take off/away&#8217;</td>
</tr>
<tr>
<td align="left" valign="top"><italic>-er</italic> verbs (2<sup>nd</sup>)</td>
<td align="left" valign="top">7</td>
<td align="left" valign="top"><italic>beber</italic> &#8216;drink&#8217;, <italic>comer</italic> &#8216;eat&#8217;, <italic>correr</italic> &#8216;run&#8217;, <italic>descer</italic> &#8216;get off/down&#8217;, <italic>esconder</italic> &#8216;hide&#8217;, <italic>escrever</italic> &#8216;write&#8217;, <italic>surpreender</italic> &#8216;surprise&#8217;</td>
</tr>
<tr>
<td align="left" valign="top">-<italic>ir</italic> verbs (3<sup>rd</sup>)</td>
<td align="left" valign="top">6</td>
<td align="left" valign="top"><italic>construir</italic> &#8216;build&#8217;, <italic>dormir</italic> &#8216;sleep&#8217;, <italic>ouvir</italic> &#8216;hear&#8217;, <italic>seguir &#8216;</italic>follow&#8217;, <italic>subir</italic> &#8216;go up&#8217;, <italic>vestir &#8216;</italic>dress&#8217;</td>
</tr>
</tbody>
</table>
</table-wrap>
<sec>
<title>3.1. Hypothesis for the experiment</title>
<p>In accordance with our general hypothesis for <sc>sg.imper</sc> in BP and our experimental design, we make the following hypotheses.</p>
<p>A. In the context of talking to their friend/sibling (image of silhouette), subjects will produce significantly more <sc>t-imper</sc> than <sc>v-imper</sc> in positive imperative contexts only.</p>
<p>B. In the context of talking to their young boss/supervisor (image of young man in a suit), subjects will produce significantly more <sc>v-imper</sc> than <sc>t-imper</sc> in positive imperative contexts only.</p>
</sec>
</sec>
<sec>
<title>4. Results</title>
<sec>
<title>4.1. Preliminary observations and statistical analysis</title>
<sec>
<title>4.1.1. Note on sg.imper: Inferential statistics</title>
<p>For the statistical analysis of the <sc>sg.imper</sc> we used R (<xref ref-type="bibr" rid="B91">R Core Team, 2018</xref>) and lme4 (<xref ref-type="bibr" rid="B7">Bates et al., 2015</xref>) to perform a mixed-effects logistic regression analysis of the relationship between the type of imperative and the following variables: context<sub>deferential/non-deferential</sub>, polarity<sub>positive/negative</sub>, conjugation, frequency, speaker, gender, and education. As fixed effects, we had level of education, frequency, type of imperative, context, and polarity. As random effects, we had intercepts for subjects, as well as by-subject random slopes for the effect of the variable context. In order to avoid overfitting the regression model and to account for the interactions between the different conjugational classes, frequency, and conjugation class were calculated apart with the fixed variables context and polarity and intercepts for subjects. For the effects of the variables speaker and gender, p-values were obtained by likelihood ratio tests of the full model with the effect in question against the model without the effect in question. For other effects predicted probabilities were extracted from log-odds calculations. In order to establish any significant differences between the two cities the data sets were combined, and another mixed-effects logistical model was carried out on the combined data with fixed effects for context, polarity and city, and with speaker as a random effect and by-subject random slopes for the effect of context.</p>
</sec>
<sec>
<title>4.1.2. Note of the variable &#8216;frequency&#8217;</title>
<p>Anticipating our results, the most reliable effect across both cities was for the variable frequency. However, as pointed out and explained in the analysis of the <sc>pl.imper</sc> (O&#8217;Neill, 2024, 9&#8211;10), these positive effects were the result of the way the frequency was (mis)calculated.<xref ref-type="fn" rid="n5">5</xref> The variable frequency will therefore be omitted from the presentation of the results and disregarded for the discussion.</p>
</sec>
</sec>
<sec>
<title>4.2. General overview</title>
<p>Overall, as illustrated by the data in <xref ref-type="table" rid="T7">Table 7</xref> and their visual representation in <xref ref-type="fig" rid="F1">Figure 1</xref>, there was significant variation between the two morphological forms of <sc>imper</sc>. This variation was present in both cities, although Araraquara showed a slight preference for <sc>t-imper</sc> and Belo Horizonte for <sc>v-imper</sc>.</p>
<table-wrap id="T7">
<label>Table 7</label>
<caption>
<p>Numbers of the different types of imperatives according to the city.</p>
</caption>
<table>
<tbody>
<tr>
<td align="left" valign="top"></td>
<td align="left" valign="top"><bold><sc>t-imper</sc></bold></td>
<td align="left" valign="top"><bold><sc>v-imper</sc></bold></td>
</tr>
<tr>
<td align="left" valign="top">Araraquara</td>
<td align="left" valign="top">351 (54%)</td>
<td align="left" valign="top">304 (46%)</td>
</tr>
<tr>
<td align="left" valign="top">Belo Horizonte</td>
<td align="left" valign="top">240 (44%)</td>
<td align="left" valign="top">304 (56%)</td>
</tr>
</tbody>
</table>
</table-wrap>
<fig id="F1">
<label>Figure 1</label>
<caption>
<p>Bar charts corresponding to the above data. Count = number of imperatives.</p>
</caption>
<graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpl-25-24247-g1.png"/>
</fig>
<p>As for the inferential statistics, the results were that, in Araraquara, there were reliable effects for speaker, context, polarity and conjugation and, in Belo Horizonte, there were reliable effects for speaker and conjugation only. In no city were there effects for education or gender. There were also no reliable effects between the two cities (&#967;<sup>2</sup>(1) = 0.092, <italic>p</italic> = &lt;0.76). In what follows, the data for each significant effect will be presented separately.</p>
<sec>
<title>4.2.1. Variable: Speaker</title>
<p>Speaker was the variable which produced the most reliable effects, being highly significant in both cities (Araraquara (&#967;<sup>2</sup>(1) = 170.02, <italic>p</italic> = &lt;0.0001); Belo Horizonte (&#967;<sup>2</sup>(1) = 158.47, <italic>p</italic> = &lt;0.0001)). As observable from the data in <xref ref-type="table" rid="T8">Table 8</xref>, represented as bar charts in <xref ref-type="fig" rid="F2">Figure 2</xref>, there is significant inter- and intra-speaker variation. For example, in Araraquara, there is one speaker (M4), who categorically only used <sc>v-imper</sc> and, in Belo Horizonte, there were two speakers (M2 &amp; M3) who, whilst not categorical, displayed a very strong tendency towards these forms. In both cities, there were also speakers who displayed a strong tendency towards <sc>t-imper</sc> (F1 and F2 in Araraquara and F2 and M1 in Belo Horizonte) and others for whom there was no clear preference (F3 in both Araraquara and Belo Horizonte).</p>
<table-wrap id="T8">
<label>Table 8</label>
<caption>
<p>Numbers of the different types of imperatives according to the speaker for both cities.</p>
</caption>
<table>
<tbody>
<tr>
<td align="left" valign="top"><bold>Participant code</bold></td>
<td align="left" valign="top" colspan="2"><bold>Araraquara</bold></td>
<td align="left" valign="top" colspan="2"><bold>Belo Horizonte</bold></td>
</tr>
<tr>
<td align="left" valign="top"></td>
<td align="left" valign="top"><bold><sc>t-imper</sc></bold></td>
<td align="left" valign="top"><bold><sc>v-imper</sc></bold></td>
<td align="left" valign="top"><bold><sc>t-imper</sc></bold></td>
<td align="left" valign="top"><bold><sc>v-imper</sc></bold></td>
</tr>
<tr>
<td align="left" valign="top">F1</td>
<td align="left" valign="top">78 (79%)</td>
<td align="left" valign="top">21 (21%)</td>
<td align="left" valign="top">37 (36%)</td>
<td align="left" valign="top">66 (64%)</td>
</tr>
<tr>
<td align="left" valign="top">F2</td>
<td align="left" valign="top">58 (82%)</td>
<td align="left" valign="top">13(18%)</td>
<td align="left" valign="top">95 (89%)</td>
<td align="left" valign="top">12 (11%)</td>
</tr>
<tr>
<td align="left" valign="top">F3</td>
<td align="left" valign="top">49 (50%)</td>
<td align="left" valign="top">49 (50%)</td>
<td align="left" valign="top">53 (55%)</td>
<td align="left" valign="top">43 (45%)</td>
</tr>
<tr>
<td align="left" valign="top">M1</td>
<td align="left" valign="top">75 (74%)</td>
<td align="left" valign="top">26 (26%)</td>
<td align="left" valign="top">46 (85%)</td>
<td align="left" valign="top">8 (15%)</td>
</tr>
<tr>
<td align="left" valign="top">M2</td>
<td align="left" valign="top">32 (39%)</td>
<td align="left" valign="top">50 (61%)</td>
<td align="left" valign="top">7 (7%)</td>
<td align="left" valign="top">95 (93%)</td>
</tr>
<tr>
<td align="left" valign="top">M3</td>
<td align="left" valign="top">59 (56%)</td>
<td align="left" valign="top">46 (44%)</td>
<td align="left" valign="top">2 (2%)</td>
<td align="left" valign="top">80 (98%)</td>
</tr>
<tr>
<td align="left" valign="top">M4</td>
<td align="left" valign="top">0 (0%)</td>
<td align="left" valign="top">99 (100%)</td>
<td align="left" valign="top">&#8211;</td>
<td align="left" valign="top">&#8211;</td>
</tr>
</tbody>
</table>
</table-wrap>
<fig id="F2">
<label>Figure 2</label>
<caption>
<p>Bar charts of the different types of imperatives for each city according to the speaker. M = masculine, F = feminine.</p>
</caption>
<graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpl-25-24247-g2.png"/>
</fig>
</sec>
<sec>
<title>4.2.2. Variable: Context</title>
<p>Recall that the two different contexts corresponded roughly to the distinction between deferential and non-deferential address. Our central hypothesis was that these contexts were conditioning factors for the variation in the <sc>imper</sc>. For the variable context, however, there were only reliable effects in Araraquara, not in Belo Horizonte. In Araraquara, the predicted probability of observing a <sc>v-imper</sc> decreased from 0.94 in deferential contexts to 0.29 in non-deferential contexts (logit difference: &#8211;3.62, SE = 1.77, <italic>z</italic> = &#8211;2.04, <italic>p</italic> &lt; 0.04). In <xref ref-type="table" rid="T9">Table 9</xref>, we provide a count of the different types of <sc>imper</sc> according to the variables context and city and in <xref ref-type="fig" rid="F3">Figure 3</xref>, there is a visual representation of this variation for each individual speaker in each city.</p>
<table-wrap id="T9">
<label>Table 9</label>
<caption>
<p>Numbers of the different types of imperatives according to the variables context and city.</p>
</caption>
<table>
<tbody>
<tr>
<td align="left" valign="top" rowspan="2"></td>
<td align="left" valign="top" colspan="2"><bold>Non-deferential (singular)</bold></td>
<td align="left" valign="top" colspan="2"><bold>Deferential (singular)</bold></td>
</tr>
<tr>
<td align="left" valign="top"><bold><sc>t-imper</sc></bold></td>
<td align="left" valign="top"><bold><sc>v-imper</sc></bold></td>
<td align="left" valign="top"><bold><sc>t-imper</sc></bold></td>
<td align="left" valign="top"><bold><sc>v-imper</sc></bold></td>
</tr>
<tr>
<td align="left" valign="top">Araraquara</td>
<td align="left" valign="top">243 (69%)</td>
<td align="left" valign="top">107 (31%)</td>
<td align="left" valign="top">108 (35%)</td>
<td align="left" valign="top">197 (65%)</td>
</tr>
<tr>
<td align="left" valign="top">Belo Horizonte</td>
<td align="left" valign="top">129 (45%)</td>
<td align="left" valign="top">156 (55%)</td>
<td align="left" valign="top">111 (43%)</td>
<td align="left" valign="top">148 (57%)</td>
</tr>
</tbody>
</table>
</table-wrap>
<fig id="F3">
<label>Figure 3</label>
<caption>
<p>Bar charts of the different types of imperatives for each speaker in each city according to the variable context. Black = <sc>t-imper</sc>, grey = <sc>v-imper</sc>.</p>
</caption>
<graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpl-25-24247-g3.png"/>
</fig>
<p>The first point to highlight from these data is the variation between cities and the already noted substantial variation between speakers. In Belo Horizonte there seems to be similar responses by all speakers (save perhaps M1) across both contexts, whereas in Araraquara there are some differences depending on the speaker: F3 seems to have a clear preferences for <sc>t-imper</sc> in non-deferential contexts and <sc>v-imper</sc> in deferential contexts, this is a tendency for M1 and M2 also, however, F1 and F2 show no real tendencies for the variable context.</p>
</sec>
<sec>
<title>4.2.3. Variable: Polarity</title>
<p>Recall that polarity refers to the difference between positive and negative <sc>imper</sc>. In comparison with the variable context, the raw data in <xref ref-type="table" rid="T10">Table 10</xref> and its visual representation in the bar charts in <xref ref-type="fig" rid="F4">Figure 4</xref> seem to suggest that there are no real significant differences for the variable polarity. The statistical analysis, however, revealed that in Araraquara, but not in Belo Horizonte, there was a reliable effect of polarity, with the predicted probability of observing <sc>v-imper</sc> decreasing from 0.66 in negative contexts to 0.38 in positive contexts (logit difference: &#8211;1.11, SE = 0.24, <italic>z</italic> = &#8211;4.72, <italic>p</italic> &lt; 0.00).</p>
<table-wrap id="T10">
<label>Table 10</label>
<caption>
<p>Numbers of the two different imperatives for each city according to the variable polarity.</p>
</caption>
<table>
<tbody>
<tr>
<td align="left" valign="top" rowspan="2"></td>
<td align="left" valign="top" colspan="2"><bold>Positive</bold></td>
<td align="left" valign="top" colspan="2"><bold>Negative</bold></td>
</tr>
<tr>
<td align="left" valign="top"><bold><sc>t-imper</sc></bold></td>
<td align="left" valign="top"><bold><sc>v-imper</sc></bold></td>
<td align="left" valign="top"><bold><sc>t-imper</sc></bold></td>
<td align="left" valign="top"><bold><sc>v-imper</sc></bold></td>
</tr>
<tr>
<td align="left" valign="top">Araraquara</td>
<td align="left" valign="top">193 (58%)</td>
<td align="left" valign="top">138 (42%)</td>
<td align="left" valign="top">158 (49%)</td>
<td align="left" valign="top">166 (51%)</td>
</tr>
<tr>
<td align="left" valign="top">Belo Horizonte</td>
<td align="left" valign="top">116 (45%)</td>
<td align="left" valign="top">142 (55%)</td>
<td align="left" valign="top">124 (43%)</td>
<td align="left" valign="top">162 (57%)</td>
</tr>
</tbody>
</table>
</table-wrap>
<fig id="F4">
<label>Figure 4</label>
<caption>
<p>Bar charts of the data in the table above.</p>
</caption>
<graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpl-25-24247-g4.png"/>
</fig>
<p>This reliable effect for polarity becomes apparent for Araraquara when the raw data for polarity is analysed with respect to the variable context, of which there were two levels deferential (D) and non-deferential (ND) contexts. Witness the data in <xref ref-type="table" rid="T11">Table 11</xref>. It seems, therefore, that polarity and context interact since the differences between the two polarities becomes more apparent when one analyses the differences with respect to the different contexts (non-deferential/deferential). Specifically, there are substantially more <sc>v-imper</sc> when the variables polarity<sub>negative</sub> and context<sub>deferential</sub> either combine or are both absent.</p>
<table-wrap id="T11">
<label>Table 11</label>
<caption>
<p>Numbers of the two different imperatives for Araraquara only in which the tokens for the variable Polarity are sub-divided in accordance with the variable context. D= deferential context, ND= non-deferential context.</p>
</caption>
<table>
<tbody>
<tr>
<td align="left" valign="top" rowspan="2"></td>
<td align="left" valign="top" colspan="4"><bold>Positive</bold></td>
<td align="left" valign="top" colspan="4"><bold>Negative</bold></td>
</tr>
<tr>
<td align="left" valign="top" colspan="2"><bold><sc>t-imper</sc></bold></td>
<td align="left" valign="top" colspan="2"><bold><sc>v-imper</sc></bold></td>
<td align="left" valign="top" colspan="2"><bold><sc>t-imper</sc></bold></td>
<td align="left" valign="top" colspan="2"><bold><sc>v-imper</sc></bold></td>
</tr>
<tr>
<td align="left" valign="top">Araraquara</td>
<td align="left" valign="top" colspan="2">193 (58%)</td>
<td align="left" valign="top" colspan="2">138 (42%)</td>
<td align="left" valign="top" colspan="2">158 (49%)</td>
<td align="left" valign="top" colspan="2">166 (51%)</td>
</tr>
<tr>
<td align="left" valign="top"></td>
<td align="left" valign="top"><bold>ND</bold></td>
<td align="left" valign="top"><bold>D</bold></td>
<td align="left" valign="top"><bold>ND</bold></td>
<td align="left" valign="top"><bold>D</bold></td>
<td align="left" valign="top"><bold>ND</bold></td>
<td align="left" valign="top"><bold>D</bold></td>
<td align="left" valign="top"><bold>ND</bold></td>
<td align="left" valign="top"><bold>D</bold></td>
</tr>
<tr>
<td align="left" valign="top"></td>
<td align="left" valign="top">130 (67%)</td>
<td align="left" valign="top">63 (33%)</td>
<td align="left" valign="top">41 (30%)</td>
<td align="left" valign="top">97 (70%)</td>
<td align="left" valign="top">113 (72%)</td>
<td align="left" valign="top">45 (28%)</td>
<td align="left" valign="top">66 (40%)</td>
<td align="left" valign="top">100 (60%)</td>
</tr>
</tbody>
</table>
</table-wrap>
<p>As expected by the already noted reliable effect for the variable speaker, there is also much inter- and intra-speaker variation, as illustrated graphically in the bar charts in <xref ref-type="fig" rid="F5">Figure 5</xref> for Araraquara only.</p>
<fig id="F5">
<label>Figure 5</label>
<caption>
<p>Bar charts of the different types of imperatives for each speaker in each city according to the Polarity. Black = <sc>t-imper</sc>, grey = <sc>v-imper</sc>; n= negative <sc>imper</sc>, p = positive <sc>imper</sc>.</p>
</caption>
<graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpl-25-24247-g5.png"/>
</fig>
</sec>
<sec>
<title>4.2.4. Variable: Conjugation class</title>
<p>In Araraquara, in the mixed-effects logistic regression analysis, there was a mild significant effect of the variable conjugation but only for the verbs of the third (<italic>p</italic> = 0.0461) and irregular conjugations (<italic>p</italic> = 0.0402) when compared with the first. In Belo Horizonte the effects were more robust with conjugation being strongly significant overall (&#967;<sup>2</sup>(3) = 27.6, <italic>df</italic> = 3, <italic>p</italic> &lt; 0.0001) and for verbs of the second (<italic>p</italic> = 0.003), third (<italic>p</italic> &lt; 0.0001) and irregular (<italic>p</italic> &lt; 0.0001) conjugations. In <xref ref-type="table" rid="T12">Table 12</xref>, we give the raw data, which is visually depicted as bar charts in <xref ref-type="fig" rid="F6">Figure 6</xref>. Note that our invented irregular conjugation class was categorised as conjugation 4 for the statistical analysis.</p>
<table-wrap id="T12">
<label>Table 12</label>
<caption>
<p>Numbers of the different types of imperatives according to the conjugation for both cities.</p>
</caption>
<table>
<tbody>
<tr>
<td align="left" valign="top" rowspan="2"></td>
<td align="left" valign="top" colspan="2"><bold>Araraquara</bold></td>
<td align="left" valign="top" colspan="2"><bold>Belo Horizonte</bold></td>
</tr>
<tr>
<td align="left" valign="top"><bold><sc>t-imper</sc></bold></td>
<td align="left" valign="top"><bold><sc>v-imper</sc></bold></td>
<td align="left" valign="top"><bold><sc>t-imper</sc></bold></td>
<td align="left" valign="top"><bold><sc>v-imper</sc></bold></td>
</tr>
<tr>
<td align="left" valign="top">Conjugation 1</td>
<td align="left" valign="top">80</td>
<td align="left" valign="top">50</td>
<td align="left" valign="top">79</td>
<td align="left" valign="top">45</td>
</tr>
<tr>
<td align="left" valign="top">Conjugation 2</td>
<td align="left" valign="top">95</td>
<td align="left" valign="top">77</td>
<td align="left" valign="top">60</td>
<td align="left" valign="top">73</td>
</tr>
<tr>
<td align="left" valign="top">Conjugation 3</td>
<td align="left" valign="top">76</td>
<td align="left" valign="top">77</td>
<td align="left" valign="top">44</td>
<td align="left" valign="top">77</td>
</tr>
<tr>
<td align="left" valign="top">Conjugation 4</td>
<td align="left" valign="top">100</td>
<td align="left" valign="top">100</td>
<td align="left" valign="top">57</td>
<td align="left" valign="top">109</td>
</tr>
</tbody>
</table>
</table-wrap>
<fig id="F6">
<label>Figure 6</label>
<caption>
<p>Bar charts of the different types of imperatives for each city according to conjugation class.</p>
</caption>
<graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpl-25-24247-g6.png"/>
</fig>
<p>To establish if conjugation was significant overall for each city and any significant differences between all different conjugations, and not just in comparison with the first, further statistical analyses were performed using R (<xref ref-type="bibr" rid="B91">R Core Team, 2018</xref>). Wald tests were carried out on a logistic regression analysis with the fixed effects polarity, context, and conjugation. Tests were carried out for all conjugations together and then each conjugation was compared with the others. The results were that in Araraquara the variable conjugation was not significant overall (&#967;<sup>2</sup>(3) = 6.3, <italic>p</italic> = 0.096) but the first conjugation had significantly fewer <sc>v-imper</sc> when compared with third (&#967;<sup>2</sup>(1) = 5.8, <italic>p</italic> = 0.016) and fourth conjugations (&#967;<sup>2</sup>(1) = 5.0, <italic>p</italic> = 0.015) but not with the second (&#967;<sup>2</sup>(1) = 3.5, <italic>p</italic> = 0.062). In Belo Horizonte, the fine-grained analysis revealed that, as in Araraquara, the effect of conjugation was only significant with the first conjugation, which had significantly fewer <sc>v-imper</sc> forms when compared with the second (&#967;<sup>2</sup>(1) = 10.3, <italic>p</italic> = 0.001), third (&#967;<sup>2</sup>(1) = 16.2, <italic>p</italic> &lt; 0.0001) and fourth conjugations (&#967;<sup>2</sup>(1) = 18.9, <italic>p</italic> &lt; 0.0001).</p>
</sec>
</sec>
</sec>
<sec>
<title>5. Conclusion and discussion of results of experimental study</title>
<sec>
<title>5.1. Overall conclusion</title>
<p>In sum, the only reliable effects in both cities were those for speaker. Speakers displayed much inter- and intra-individual variation. Although conjugation was not significant overall, a fine-grained statistical analysis revealed, however, that for both cities, speakers produce significantly more <sc>t-imper</sc> in the first conjugation. In Araraquara only, there were also reliable effects for context and polarity, with speakers showing a tendency to produce more <sc>v-imper</sc> in both deferential contexts and with negative polarity.</p>
<p>The results of our experiment, therefore, confirm our hypothesis for Araraquara only. That is, in this city only, the difference between <sc>t-imper</sc> and <sc>v-imper</sc> is becoming correlated with notions related to the distinction between deferential and non-deferential address, but this distinction is only present in positive imperatives not in negative imperatives. That is, although in the single there is a distinct pronominal marker for deferential address (<italic>o senhor/a senhora</italic>) which contrasts with that for non-deferential address (<italic>voc&#234;</italic>), the imperative usage corresponding to <italic>voc&#234;</italic> is nuanced in positive imperatives. In contexts of asymmetrical power relations in which there is social distance and not such strong links of solidarity, speakers on the less powerful side of the relationship are more likely to use positive <sc>v-imper</sc> when addressing people on the more powerful side.</p>
</sec>
<sec>
<title>5.2. Discussion</title>
<p>As to why the correlation found in Araraquara between the type of <sc>sg.imper</sc> and notions related to deferential/non-deferential address is not as robust in the negative <sc>imper</sc>, we think that this could be because the distinction is an emergent one. Therefore, in keeping with the principles of koineization, such new and emergent morphological distinctions are more likely to be realised in the more frequent and unmarked positive imperatives than the less frequent and marked negative imperatives. Note also that, cross-linguistically, there is a tendency for distinctions present in positive <sc>imper</sc> to be neutralised in negative <sc>imper</sc> (<xref ref-type="bibr" rid="B1">Aikhenvald, 2010, pp. 165&#8211;197;</xref> <xref ref-type="bibr" rid="B126">Van Olmen, 2024</xref>). As to why <sc>v-imper</sc> is more prevalent in negative imperatives, this is a historical legacy. The <sc>v-imper</sc> corresponded etymologically to the <sc>imper</sc> belonging to the paradigm in which <italic>voc&#234;</italic> was the subject pronoun; having the <italic>voc&#234;</italic> pronoun correspond to the <sc>t-imper</sc> is an innovation. As noted, this innovation has managed to make clear inroads in unmarked positive imperative contexts but not so much in negative contexts.</p>
<p>Regarding the prevalence of <sc>t-imper</sc> in the first conjugation versus the other conjugations and especially the irregular verbs (what we classed as conjugation 4), in which there were significantly more <sc>v-imper</sc>, these effects could be related to frequency effects and the difference between producing imperative forms from memory vs. relying on generalisations/rules present in the morphological system. Frequent morphological forms typically become lexically entrenched and resistant to change (<xref ref-type="bibr" rid="B17">Bybee, 1988</xref>, <xref ref-type="bibr" rid="B18">1995</xref>, <xref ref-type="bibr" rid="B19">2010</xref>). The <sc>v-imper</sc> of the irregular verbs used in the present study (see <xref ref-type="table" rid="T6">Table 6</xref>) is undoubtedly lexically stored due to their frequency. Therefore, if we accept that the substitution of the <sc>v-imper</sc> by the <sc>t-imper</sc> is an innovation caused by the process of koineization/new dialect formation, then it follows that the most frequent, entrenched forms will be most resistant to this change. This conclusion comes from the assumption that irregular verbs have weak associations with other lexemes and so are lexically autonomous and entrenched (<xref ref-type="bibr" rid="B18">Bybee, 1995</xref>, <xref ref-type="bibr" rid="B20">2001, p. 124;</xref> <xref ref-type="bibr" rid="B21">Caramazza et al., 1988</xref>; <xref ref-type="bibr" rid="B51">Hare et al., 2001, p. 4;</xref> <xref ref-type="bibr" rid="B78">Mowrey &amp; Pagliuca, 1995</xref>; <xref ref-type="bibr" rid="B110">Stemberger &amp; MacWhinney, 1988</xref>) and therefore unlikely to be subject to morphological overgeneralisation (<xref ref-type="bibr" rid="B30">Corbett et al., 2001</xref>) and resistant to morphological change. Conversely, those verbs which are most likely to be subject to change are the less frequent ones, which are most likely to be produced in accordance with the morphological generalisation/rules of the language (as opposed to being lexically stored). As to why these verbs should be those of the 1<sup>st</sup> conjugation, as opposed the those of 2<sup>nd</sup> or the 3<sup>rd</sup> conjugations (remember that in both Araraquara and Belo Horizonte, there were significant differences between the 1<sup>st</sup> conjugation and both the class of irregular verbs and 3<sup>rd</sup> conjugation verbs), there is independent evidence to suggest that there are qualitative differences between these conjugations. Ver&#237;ssimo and Clahsen (<xref ref-type="bibr" rid="B127">2009</xref>) provide experimental evidence to suggest that first conjugation verbs are constructed in accordance with morphological rules (root + thematic vowel + desinences), whereas the stems of third conjugation verbs are stored as a unit. Accordingly, the prediction would be that any innovations in the morphological system would first target those verbs which rely more on the morphological system for their production.</p>
<p>Regarding the lack of reliable effects for context in Belo Horizonte, it could be that the origin of this change in progress is the city of S&#227;o Paulo, which, with its 11.5 million inhabitants, is the largest city in Brazil and also the most important city in economic terms. Pending experimental confirmation, were this to be the case then it is understandable that this innovation has reached Araraquara, which is in the interior of the state of which S&#227;o Paulo (289 km away) is the capital and the economic, cultural, and prestige focus point for residents. Belo Horizonte is not only further away from S&#227;o Paulo (583 km), but it is also the capital and prestige centre of its own state, Minas Gerais, which historically was in conflict with S&#227;o Paulo for political and economic hegemony of Brazil. Given that in both regions <italic>voc&#234;</italic>, which corresponded etymologically to the <sc>v-imper</sc>, is the dominant subject pronoun, then there is evidence to support the aforementioned idea of a change in progress originating in S&#227;o Paulo but which is yet to reach other capitals of the South-East region of Brazil. This evidence comes from the overall numbers of <sc>imper</sc> (see <xref ref-type="table" rid="T7">Table 7</xref>) which show a preference in Belo Horizonte for <sc>v-imper</sc> (56% of tokens in Belo Horizonte vs. 46% in Araraquara).</p>
<p>The general conclusion of our study could be that the reliable effects for context in Araraquara suggest that there is a change in process whereby BP is developing a nuanced term-of-address system. Alongside the established differences between deferential/non-deferential address marked by the use of the subject pronouns (<italic>o senhor/a senhora</italic> vs. <italic>voc&#234;</italic> respectively) there is emerging within the <italic>voc&#234;</italic> paradigm a way to mark social distance/power/solidarity via the use of <sc>t-imper</sc> or <sc>v-imper</sc>. The latter being correlated with more deferential situations. This socially determined use of the <sc>sg.imper</sc> is an emerging generalisation and therefore is only present in positive imperatives and effects those verbs whose imperative forms are most likely to be &#8216;morphologically created&#8217; as opposed to having a dedicated memorised form. The emerging nature of this generalisation and the supposition that it originated in S&#227;o Paulo, helps to explain the lack of reliable effects in Belo Horizonte. The change has not reached other cities of the South-East yet.</p>
<p>Whilst the previous paragraph could be a valid conclusion based on our study, we would like to remain circumspect with our conclusions, however, due to the significant inter- and intra-individual variation in the data. For example, whilst the percentages do indicate a slight preference in Belo Horizonte for <sc>v-imper</sc>, it should be noted that <sc>t-imper</sc> occurred in 44% of cases; this is an extremely high number. Note also that when the data sets for both cities were combined there were no reliable effects for the variable city or the variable context. Also, although there were reliable effects in Araraquara for the variable context, confirming our hypothesis, when one analyses the data more closely (see <xref ref-type="table" rid="T9">Table 9</xref> and <xref ref-type="fig" rid="F3">Figure 3</xref>) two things stand out: (a) subjects produced an imperative which went against our hypothesis in roughly a third of cases; (b) there remains much individual idiosyncratic variation. For example, in Araraquara speaker F3 behaved almost categorically in accordance with our hypothesis (<sc>t-imper</sc> in non-deferential contexts and <sc>v-imper</sc> in deferential contexts) whilst speaker M4 displayed <sc>v-imper</sc> consistently in both contexts. In the following section, we entertain the possibility that both imperatives exist in a state of stable free variation, and we discuss the concept of morphological idiosyncratic variation.</p>
<sec>
<title>5.2.1. Idiosyncratic variation</title>
<p>Idiosyncratic variation (henceforth IV) has been given different names in the linguistic literature (e.g., <xref ref-type="bibr" rid="B37">Ellis, 1985, p. 136</xref>: &#8220;random variability&#8221;; <xref ref-type="bibr" rid="B69">MacKenzie, 2019</xref>: &#8220;individual differences&#8221;; <xref ref-type="bibr" rid="B50">Guy, Oushiro et al., 2022</xref>: &#8220;intra-speaker variation&#8221;; <xref ref-type="bibr" rid="B34">Dorian, 2010a</xref>: &#8220;idiosyncratic variation&#8221;; <xref ref-type="bibr" rid="B15">B&#252;low &amp; Pfenninger, 2021</xref>: &#8220;intra-individual variation&#8221;; <xref ref-type="bibr" rid="B12">Bolinger, 1956</xref>; <xref ref-type="bibr" rid="B61">Kopf &amp; Weber, 2023</xref> i.a.: &#8220;free variation&#8221;). It relates to what Moser (<xref ref-type="bibr" rid="B76">2023</xref>) calls true optionality, this is, cases where speakers consistently alternate between two or more syntactic variants without a clear preference, and where neither form is associated with specific grammatical, pragmatic, or sociolinguistic constraints. This means that the variation is not driven by external pressures (such as register, dialect contact, or language change) but is instead an inherent property of the speaker&#8217;s grammatical system. It can also be linked to the concept of overabundance (<xref ref-type="bibr" rid="B114">Thornton, 2012</xref>, <xref ref-type="bibr" rid="B115">2019</xref>), the situation in which two (or more) inflectional forms are available to realize the same cell in an inflectional paradigm. On the topic of overabundance, Thornton (<xref ref-type="bibr" rid="B115">2019, p. 232</xref>) notices that &#8220;most linguists assume that overabundance can exist only as a transitional stage during diachronic change, and that any single speaker only uses one of the cell mates available in a community&#8217;s repertoire; besides, many assume that cell mates always differ according to geo-socio-stylistic conditions, or in meaning&#8221;. This is because the possibility of this variation goes against a number of proposed linguistic principles: Clark&#8217;s Principle of Contrast (<xref ref-type="bibr" rid="B28">Clark, 1987</xref>), the P&#257;&#7751;ini&#8217;s principle (<xref ref-type="bibr" rid="B24">Cardona, 1997</xref>), or the idea within theories of koineization/dialect mixing that after a period of variation grammars will become stable and focussed (<xref ref-type="bibr" rid="B13">Britain &amp; Trudgill, 2005</xref>; <xref ref-type="bibr" rid="B58">Kerswill, 2004</xref>; <xref ref-type="bibr" rid="B107">Siegel, 1985</xref>; <xref ref-type="bibr" rid="B117">Trudgill, 2001a</xref>; <xref ref-type="bibr" rid="B118">2001b</xref>). Most significantly, however, is the fact that the presence of IV is in direct contradiction to one of the most fundamental and guiding principles of research in variational linguistics, namely, the principle of &#8220;orderly heterogeneity&#8221; (<xref ref-type="bibr" rid="B130">Weinreich et al., 1968</xref>). This principle states that language variation is not random or idiosyncratic but, when not grammatically governed, is structured along social dimensions whereby linguistic variables can be indexical of some social meaning or category. There is a plethora of studies which show how variables at all linguistic levels of analysis can be correlated with grammatical and social meaning (see <xref ref-type="bibr" rid="B8">Beaman &amp; Guy, 2022</xref>; <xref ref-type="bibr" rid="B131">Werth et al., 2021</xref>). However, the fact that some variables in some languages can have social or grammatical correlates does not necessarily mean that all variation is correlated this way. Indeed, it has been suggested that the assumption of orderly heterogeneity has made researchers blind to idiosyncratic variation (<xref ref-type="bibr" rid="B31">Dabrowska, 2012</xref>; <xref ref-type="bibr" rid="B34">Dorian, 2010a</xref>, <xref ref-type="bibr" rid="B35">2010b</xref>). Moreover, there is evidence (<xref ref-type="bibr" rid="B16">B&#252;low et al., 2019</xref>) to question studies in the area of correlational sociolinguistics for adhering to what Wolfram and Beckett (<xref ref-type="bibr" rid="B132">2000</xref>) have termed &#8220;the homogeneity assumption&#8221;, whereby sets of speakers are treated as a homogenous group with respect to their variation.</p>
<p>Studies within what has been termed the third-wave of variationist sociolinguists (<xref ref-type="bibr" rid="B36">Eckert, 2012</xref>) have moved away from such homogenizing tendencies and view linguistic variation as not marking fixed social categories but as a tool for constructing different <italic>personae</italic>, styles and identities which, in turn, are related to larger social structures (<xref ref-type="bibr" rid="B75">Moore &amp; Carter, 2015</xref>). However, the orderly heterogeneity of linguistic variation is assumed (although it is accepted to be instantiated in complex social ways), and idiosyncratic variation is largely disregarded. This tendency is also related to the shift of analysis in sociolinguistics from the individual level, i.e., that of idiolects, to the population level (<xref ref-type="bibr" rid="B130">Weinreich et al., 1968</xref>). The necessity of this analysis was further enforced by Labov (<xref ref-type="bibr" rid="B62">2001, p. 34</xref>) who highlighted that &#8220;linguistic analysis cannot recognize individual grammars or phonologies &#8230; individuals are not the final units of linguistic analysis, but the components that are used to construct models of our primary object of interest, the speech community.&#8221; However, more recent research, especially within sound change, has highlighted the importance of the individual in linguistic change (<xref ref-type="bibr" rid="B3">Anthonissen, 2021</xref>; <xref ref-type="bibr" rid="B11">Blythe &amp; Croft, 2021</xref>; <xref ref-type="bibr" rid="B111">Stevens, 2022</xref>; <xref ref-type="bibr" rid="B112">Stuart-Smith &amp; Timmins, 2010</xref>).</p>
<p>In spite of the orderly heterogeneity assumptions lasting relevance (see <xref ref-type="bibr" rid="B8">Beaman &amp; Guy, 2022</xref>), there is a growing body of research that stresses the prevalence of IV which is not correlated with any social meaning within language communities (<xref ref-type="bibr" rid="B16">B&#252;low et al., 2019</xref>; <xref ref-type="bibr" rid="B15">B&#252;low &amp; Pfenninger, 2021</xref>; <xref ref-type="bibr" rid="B35">Dorian, 2010b</xref>; <xref ref-type="bibr" rid="B38">Entringer, 2021</xref>; <xref ref-type="bibr" rid="B44">Fasold, 1975</xref>; <xref ref-type="bibr" rid="B52">Hymes, 1979</xref>; <xref ref-type="bibr" rid="B55">Johnstone, 1996</xref>; <xref ref-type="bibr" rid="B66">Le Page &amp; Tabouret-Keller, 1985</xref>; O&#8217;Neill, 2024; <xref ref-type="bibr" rid="B105">Schilling-Estes, 1998</xref>; <xref ref-type="bibr" rid="B132">Wolfram &amp; Beckett, 2000</xref>). Dorian (<xref ref-type="bibr" rid="B34">2010a</xref>) highlights the disregard for analyzing IV, noting that researchers often miss it due to their backgrounds in highly standardized languages and ingrained assumptions that speech variation is tied to social categories (e.g., age, gender) or grammatical constraints (see also <xref ref-type="bibr" rid="B74">Milroy &amp; Milroy, 1999</xref>; <xref ref-type="bibr" rid="B104">Schieffelin et al., 1998</xref>).</p>
<p>Werth et al. (<xref ref-type="bibr" rid="B131">2021, p. 2</xref>) postulate different causes for the lack of particular attention on the matter. Firstly, they highlight how the methods for carrying out research on IV using insights from variationist and complexity theories &#8220;have remained relatively elusive&#8221;. Secondly, they note that IV goes against Chomsky&#8217;s (<xref ref-type="bibr" rid="B27">1965</xref>) view of generative grammar, which depicts the competence of an ideal speaker-hearer in a homogeneous speech community. Speakers&#8217; convergence is taken as a fact (&#8220;almost [as] an article of faith&#8221;, <xref ref-type="bibr" rid="B32">D&#261;browska, 2018, p. 222</xref>). Such stances lead to disregarding IV, before even asking what it could mean, or supposing that there is a need for more research to uncover the underlying correlations. Note that Guy and Hinskens (<xref ref-type="bibr" rid="B49">2016, p. 1</xref>) state, &#8220;a fortiori there has to be a unifying, albeit maybe slightly more abstract, overall system in the coherence of language varieties, otherwise we would all be living in an eternal tower of Babel.&#8221;</p>
<p>We would like to suggest that the variation in <sc>sg.imper</sc> in Belo Horizonte, at least, is a matter of IV. And, despite the reliable effects of context and polarity in our study and immediacy in other studies, we highlight that these effects are tendencies and not absolutes. There still remains much IV at the population level, which needs to be acknowledged. These conclusions for BP, however, are problematic in the light of previous studies, most notably Dorian (<xref ref-type="bibr" rid="B34">2010a</xref>), who suggests that the prevalence of IV can be a result of social factors, and identifies the following social traits:</p>
<list list-type="bullet">
<list-item><p>the language has a small population of native speakers;</p></list-item>
<list-item><p>there is an absence of socioeconomic differentiation between speakers;</p></list-item>
<list-item><p>the language can be classed as a minority language or endangered language;</p></list-item>
<list-item><p>the language is used as the traditional means of communication within the home, but it is under pressure from another more dominant language for communication in society, as a whole;</p></list-item>
<list-item><p>the language lacks a written standard (see also <xref ref-type="bibr" rid="B38">Entringer, 2021</xref>).</p></list-item>
</list>
<p>These social traits are categorically not characteristic of Brazilian society, and yet, the results of our study on <sc>sg.imper</sc> and also a study on <sc>pl.imper</sc> (O&#8217;Neill, 2004) reveal much IV in BP. This latter study, which was based on data from the current experiment but focussed on <sc>pl.imper</sc>, found that although speakers displayed certain tendencies or preferences for <sc>pl.imper</sc> (e.g., in negative contexts in Araraquara) these tendencies were not displayed overall by all speakers across both cities. The only variable which was significant in both cities was that of speaker, suggesting that there exists much idiosyncratic variation in the <sc>pl.imper</sc>. We suggest that the same could also be true of <sc>sg.imper</sc>. In what follows we argue that the relationship with the written standard could be a significant ecological factor in the maintenance of idiosyncratic variation. Therefore, languages need not lack a written standard to display IV, rather IV can appear in social contexts in which speakers feel alienated from the standard language and therefore do not actively engage with it or aspire to learn it.</p>
</sec>
<sec>
<title>5.2.2. The formation of BP and the rise of its standard</title>
<p>Spoken BP is considerably different from the official standard for the country. So much so that it has even been claimed that BP should be considered the language with the most native speakers that does not have a written system (<xref ref-type="bibr" rid="B89">Perini, 2003</xref>). Space restrictions do not allow for a full discussion of the origins of the marked differences between spoken and written BP or the history of the establishment of the BP written standard (for an overview, see <xref ref-type="bibr" rid="B83">O&#8217;Neill, 2022</xref>). What follows is a summary of the main points.</p>
<p>In addition to the universal tendency of languages to change over space and time, in Brazil there were also a number of socio-historic and political factors which worked as a catalyst for language change. Politically, there was, from colonial to modern times, a significant disregard for education and literacy. Historically, the Portuguese spoken in Brazil was subject to prolonged and extensive (a) contact with other languages, (b) acquisition as a second language by adult speakers (indigenous peoples, African slaves, and non-Portuguese speaking migrants), (c) regular exponential increases in the number of native speakers, and (d) dialect mixing due to population migrations. Given such social circumstances, the predictions of linguistic research is that of rapid language change resulting in the emergence of new varieties of the language, or koin&#233;s (<xref ref-type="bibr" rid="B10">Bentz &amp; Winter, 2013</xref>; <xref ref-type="bibr" rid="B9">Bentz et al., 2015</xref>; <xref ref-type="bibr" rid="B13">Britain &amp; Trudgil, 2005</xref>; <xref ref-type="bibr" rid="B59">Kerswill, 2013</xref>; <xref ref-type="bibr" rid="B60">Kerswill &amp; Williams, 2000</xref>; <xref ref-type="bibr" rid="B68">Lupyan &amp; Dale, 2010</xref>; <xref ref-type="bibr" rid="B70">McWhorter, 2007</xref>; <xref ref-type="bibr" rid="B80">Nettle, 2012</xref>; <xref ref-type="bibr" rid="B81">Nichols &amp; Bentz, 2017</xref>; <xref ref-type="bibr" rid="B93">Sampson et al., 2009</xref>; <xref ref-type="bibr" rid="B107">Siegel, 1985</xref>; <xref ref-type="bibr" rid="B116">Trudgill, 1986</xref>, <xref ref-type="bibr" rid="B117">2001a</xref>; <xref ref-type="bibr" rid="B118">2001b</xref>, 2010a, 2010b, 2011a, 2011b). These new varieties with their mixed paradigms and abundant morphological variation are the basis of spoken BP.</p>
<p>The standard written language for BP is markedly different, however, since it was artificially created at the end of the nineteenth century on a largely EP model (<xref ref-type="bibr" rid="B43">Faraco &amp; Zilles, 2017</xref>). The reasons for this were ideological and political. In the newly established Brazilian Republic, the elites were grappling with the social realities of their country, especially the racial ones, and were highly influenced by ideas originating in Europe. A continent which represented modernity and progress and was the model to imitate. In linguistic terms, this translated into basing the standard language (largely though not exclusively) on that of the old metropolis, even though this was linguistically very distant from virtually all of the Brazilian population. The rational for this decision was that it was considered that the standard language should have fixed forms and rules and constitute something which has been elaborated and endorsed by an elite group of experts. The differences between this standard and spoken BP were not seen as a problem. On the contrary, it was considered a positive aspect that people might have to strive to learn this standard since it was hypothesized that this would also bring about positive civilising effects. Unfortunately, however, there was never the political will or public investment to ensure that this standard was taught to the illiterate masses from the establishment of this standard until the modern era. At this point, the differences between spoken BP and the written standard were numerous. This fact is not, in itself, a problem for speaker&#8217;s engagement with and acceptance of the standard language. Many languages display significant linguistic differences between the official written standard and the actual every-day speech of its speakers, for example German.<xref ref-type="fn" rid="n6">6</xref> In Germany, however, the standard (<italic>Hochdeutsch</italic>) is accepted as the legitimate form of written language. Moreover, in Germany, there is, and historically has been, the political will and material resources to ensure that this standard is successfully taught in schools. This has not been the case with the standard norm in Brazil historically (<xref ref-type="bibr" rid="B83">O&#8217;Neill, 2022, p. 13&#8211;16</xref>), which ultimately resulted in its legitimacy being compromised since its artificiality was fiercely condemned by linguistics and teachers alike. In fact, the legitimacy of the standard-norm became so compromised that teachers claimed that they did not teach this norm but another type of standard language, termed the <italic>norma culta</italic> &#8216;educated norm&#8217; (<xref ref-type="bibr" rid="B109">Soares Gomes, 2019, p. 22</xref>). This educated norm (<xref ref-type="bibr" rid="B40">Faraco, 2008</xref>) is typical of the speech of the educated and affluent who live in the major urban centres, and it does not usually correspond, not even in formal, monitored contexts, to the grammatical characteristics of the traditional standard norm. This educated norm is the <italic>de facto</italic> norm which many speakers aspire to. However, due to a lack of comprehensive, codified accounts of the features of this norm (<xref ref-type="bibr" rid="B41">Faraco, 2017, p. 23;</xref> <xref ref-type="bibr" rid="B77">Moura Neves, 2002, p. 239</xref>) and its lack of official status, it is a nebulous concept (<xref ref-type="bibr" rid="B83">O&#8217;Neill, 2022, p. 15&#8211;16</xref>) and so cannot really be termed a &#8216;norm&#8217; but rather a set of linguistic tendencies which roughly correspond to the written language in (some) newspapers and (some) other formal materials and to the spoken linguistic habits of the educated. However, given Brazil&#8217;s size and population, there are many educated individuals and thus there are many different regional educated norms = linguistic tendencies (<xref ref-type="bibr" rid="B43">Faraco &amp; Zilles, 2017, pp. 184&#8211;186</xref>), including different tendencies for speaking and writing.</p>
<p>What the foregoing reveals is that due to a number of factors (artificiality of the written standard, loss of legitimacy of this standard, lack of investment in education) Brazilian speakers came to become alienated from the traditional official standard. For many speakers, it did not represent something to be actively acquired, since this position was occupied by the educated norm. This norm, however, was not fixed or prescriptive but an organic development characterised by a number of linguistic tendencies. Tendencies, by their nature, are variable and elastic. It is this relationship with the written standard that, in our opinion, approximates Brazilian society to those societies characterised by idiosyncratic variation. It is not the case that there is no official standard for BP, or speakers are excluded from the written standard. Rather, they are alienated from it and do not actively engage with it. In monitored contexts, they aim to speak or write a form of the language which is flexible and highly variable.</p>
</sec>
</sec>
<sec>
<title>5.3. Conclusion</title>
<p>This study has analysed the variation present in <sc>sg.imper</sc> in BP. Specifically, the consistent use of the <italic>voc&#234;</italic> subject pronoun with the alternative use of imperatives deriving historically from the paradigm for this pronoun (<sc>v-imper</sc>, <italic>fa&#231;a &#8216;</italic>do!&#8217;) vs. those deriving from the paradigm for the subject pronoun <italic>tu</italic> (<sc>t-imper</sc>, <italic>faz</italic> &#8216;do!&#8217;). Previous studies noted the extent of variation between these imperatives and highlighted its diatopic tendencies and specific pragmatic (immediacy) and grammatical (negative polarity) conditions, which were correlated with the use of <sc>t-imper</sc> and <sc>v-imper</sc> respectively. We proposed a social conditioning factor loosely related to the concepts of deferential/non-deferential address that could perhaps derive the effects of these two aforementioned factors. We designed an experiment to test the effects of this factor, but our results were inconclusive. Although there were reliable effects for our hypothesized social factor in the speech of one city, there was much intra- and inter-individual variation. We entertained the idea that such partial effects could be on account that the hypothesized morphological distinction was a change-in-process which (a) had originated around the city of S&#227;o Paulo, (b) had only made inroads into the positive imperatives and not the negative imperatives, and (c) had not yet spread to other cities of the South East of Brazil. However, given the high levels of individual variation present in both the <sc>sg.imper</sc> and <sc>pl.imper</sc> (O&#8217;Neill, 2024) we considered the hypothesis that, despite some tendencies in the data, the overall generalisation was that there was much idiosyncratic variation. We discussed this concept and related the prevalence and acceptance of IV in BP to the fact that for complex historical and social reasons, Brazilians have become alienated from their official standard language and do not actively engage with it or seek to acquire it. Rather, they aim to acquire an educated form of the language which is not codified and is highly variable. Although our participant pool was not representative of the broader Brazilian population &#8211; most had university education &#8211; our study uniquely focused on individual outputs, unlike many previous studies. This has allowed us to demonstrate the extent of inter- and intra-speaker variation and to show that while some speakers are (or are close to being) categorical in their choice of forms, others are not. That is, our findings underscore the presence of idiosyncratic variation.</p>
<p>IV has largely been ignored in the linguistic literature since it contradicts some fundamental tenets of variationist sociolinguistics: namely that linguistic variation is not random and that grammars tend to become focussed and stable over time. Despite much evidence supporting the aforementioned tenets, we suggest that data from BP, together with data from other studies on IV, support the idea that such tenets may not be universal but rather the result of societies with established standard languages and the concomitant standard language ideologies (see <xref ref-type="bibr" rid="B73">Milroy, 2001</xref> for an overview of how ideologies have effected linguistics). Dorian notes (<xref ref-type="bibr" rid="B34">2010a, p. 235</xref>) &#8220;the fact that one sort of social organization is exceptionally well entrenched and widely distributed in regions of the world that are more likely than others to produce linguists cannot be taken to mean that that particular social organization and its linguistic effects are universal or that its historical depth is great.&#8221; We concur and suggest that IV needs to be taken more seriously as a linguistic phenomenon, rather than as a transitory stage toward grammatical stability and categorical predictability. The prevailing assumption that all variation must be explainable &#8211; and that randomness has no place in language &#8211; may need to be re-evaluated. As our data suggest, it might be time to acknowledge that not all variation requires an orderly logic to be valid or worthy of study.</p>
</sec>
</sec>
</body>
<back>
<sec>
<title>Acknowledgements</title>
<p>We would like to thank Gisela Favaro (UNESP) and Thiago Nascimento (UFMG) for their help with the experiments and in contacting informants.</p>
</sec>
<sec>
<title>Competing Interests</title>
<p>The authors have no competing interests to declare.</p>
</sec>
<fn-group>
<fn id="n1"><p>Note that although others have called this refunctionalization (<xref ref-type="bibr" rid="B108">Smith, 2011</xref>), exaptation (<xref ref-type="bibr" rid="B64">Lass, 1990</xref>, <xref ref-type="bibr" rid="B65">1997</xref>; <xref ref-type="bibr" rid="B82">Norde, 2002</xref>; <xref ref-type="bibr" rid="B128">Vincent, 1995</xref>) and even regrammaticalization (<xref ref-type="bibr" rid="B47">Greenberg, 1991</xref>).</p></fn>
<fn id="n2"><p>Others results for S&#227;o Paulo are: 70% <sc>v-imper</sc> against 30% <sc>t-imper</sc> for negative non-immediate contexts; 75% <sc>t-imper</sc> against 25% <sc>v-imper</sc> for affirmative immediate contexts; 63% <sc>t-imper</sc> against 37% <sc>v-imper</sc> for negative non-immediate contexts.</p></fn>
<fn id="n3"><p>More information can be found here <ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="https://www.sheffield.ac.uk/rpi/ethics-integrity/urec">https://www.sheffield.ac.uk/rpi/ethics-integrity/urec</ext-link>.</p></fn>
<fn id="n4"><p>Verbs classed as irregular were those which had an irregular allomorphic root in both the <sc>prs.sbj</sc> and the <sc>pret</sc>.</p></fn>
<fn id="n5"><p>Frequency was calculated using the corpusdosportugu&#234;s.com (<xref ref-type="bibr" rid="B33">Davies, 2016</xref>) in which the token frequency counts of each inflectional form produced by speakers for the different lexemes were noted. However, <sc>t-imper</sc> almost always coincide with 3<sc>sg.prs.ind</sc> forms, which are always more frequent than 1/3<sc>sg.prs.sbj</sc> forms, which are syncretic with the <sc>v-imper</sc>. It was not feasible to try and disambiguate imper from non-imper forms in the corpus, not only due to time constraints but also because imperatives occur far more frequently in spoken than in written language. This raises concerns about the reliability of written corpora for estimating imperative frequencies. Consequently, the statistical model produced reliable effects for the variable frequency. This was an error in the experimental design. Instead of the token frequency of individual inflectional forms, the overall total frequency of the lexemes should have been the frequency values. In this way, one could establish whether a frequent verb such as <italic>fazer &#8216;do&#8217;</italic> is more likely to have a non-standard imperative than a less frequent verb, such as <italic>pular</italic> &#8216;jump&#8217;.</p></fn>
<fn id="n6"><p>The differences between the German written standard (<italic>Hochdeutsch</italic>) and the <italic>regionale Umgangssprachen</italic> used by the overwhelming majority of Germans in their daily interactions is significant (<xref ref-type="bibr" rid="B129">Watts, 2000</xref>).</p></fn>
</fn-group>
<ref-list>
<ref id="B1"><mixed-citation publication-type="book"><string-name><surname>Aikhenvald</surname>, <given-names>A. Y.</given-names></string-name> (<year>2010</year>). <source>Imperatives and commands</source>. <publisher-name>Oxford University Press</publisher-name>.</mixed-citation></ref>
<ref id="B2"><mixed-citation publication-type="webpage"><string-name><surname>Andrade</surname>, <given-names>C. Q.</given-names></string-name>, <string-name><surname>Melo</surname>, <given-names>F. G. D.</given-names></string-name>, &amp; <string-name><surname>Scherre</surname>, <given-names>M. M. P.</given-names></string-name> (<year>2007</year>). <article-title>Hist&#243;ria e varia&#231;&#227;o lingu&#237;stica: Um estudo em tempo real do imperativo gramatical em revistas em quadrinhos da Turma da M&#244;nica [History and linguistic variation: A real-time study of the grammatical imperative in Turma da M&#244;nica comics]</article-title>. <source>Finos Leitores: Jornal de Letras</source>, <volume>3</volume>(<issue>1</issue>), <fpage>1</fpage>&#8211;<lpage>12</lpage>. <uri>http://www.uniceub.br/periodicos/default.asp</uri></mixed-citation></ref>
<ref id="B3"><mixed-citation publication-type="book"><string-name><surname>Anthonissen</surname>, <given-names>L.</given-names></string-name> (<year>2021</year>). <source>Language, migration and social inequalities: A critical sociolinguistic perspective</source>. <publisher-name>De Gruyter Mouton</publisher-name>. <pub-id pub-id-type="doi">10.1515/9783110725841</pub-id></mixed-citation></ref>
<ref id="B4"><mixed-citation publication-type="book"><string-name><surname>Arduin</surname>, <given-names>J.</given-names></string-name> (<year>2005</year>). <source>A varia&#231;&#227;o dos pronomes possessivos de segunda pessoa do singular teu/seu na regi&#227;o sul do Brasil</source>. [The Variation of Second-Person Singular Possessive Pronouns teu/seu in the Southern Region of Brazil] Unpublished dissertation (MA), <publisher-name>Universidade Federal de Santa Catarina</publisher-name>.</mixed-citation></ref>
<ref id="B5"><mixed-citation publication-type="book"><string-name><surname>Auer</surname>, <given-names>P.</given-names></string-name>, <string-name><surname>Hinskens</surname>, <given-names>F.</given-names></string-name>, &amp; <string-name><surname>Kerswill</surname>, <given-names>P.</given-names></string-name> (<year>2005</year>). <source>Dialect change: Convergence and divergence in European languages</source>. <publisher-name>Cambridge University Press</publisher-name>.</mixed-citation></ref>
<ref id="B6"><mixed-citation publication-type="webpage"><string-name><surname>Barbosa</surname>, <given-names>P.</given-names></string-name>, <string-name><surname>de Paiva</surname>, <given-names>M. de C.</given-names></string-name>, &amp; <string-name><surname>Rodrigues</surname>, <given-names>C.</given-names></string-name> (<year>2017</year>). <source>Studies on variation in Portuguese</source>. <publisher-name>John Benjamins</publisher-name>. <uri>https://books.google.de/books?id=Hs86DwAAQBAJ</uri></mixed-citation></ref>
<ref id="B7"><mixed-citation publication-type="webpage"><string-name><surname>Bates</surname>, <given-names>D.</given-names></string-name>, <string-name><surname>Maechler</surname>, <given-names>M.</given-names></string-name>, <string-name><surname>Bolker</surname>, <given-names>B.</given-names></string-name>, <string-name><surname>Walker</surname>, <given-names>S.</given-names></string-name> (<year>2015</year>). <source>lme4: Linear Mixed-E&#64256; ects Models UsingEigen and S4.Rpackage version</source> <volume>1</volume>.<fpage>1</fpage>&#8211;<lpage>10</lpage>, URL <uri>http://CRAN.R-project.org/package=lme4</uri></mixed-citation></ref>
<ref id="B8"><mixed-citation publication-type="webpage"><string-name><surname>Beaman</surname>, <given-names>K. V.</given-names></string-name>, &amp; <string-name><surname>Guy</surname>, <given-names>G. R.</given-names></string-name> (<year>2022</year>). <source>The coherence of linguistic communities: Orderly heterogeneity and social meaning</source>. <publisher-name>Routledge</publisher-name>. <uri>https://books.google.cz/books?id=0BjNzgEACAAJ</uri></mixed-citation></ref>
<ref id="B9"><mixed-citation publication-type="journal"><string-name><surname>Bentz</surname>, <given-names>C.</given-names></string-name>, <string-name><surname>Verkerk</surname>, <given-names>A.</given-names></string-name>, <string-name><surname>Kiela</surname>, <given-names>D.</given-names></string-name>, <string-name><surname>Hill</surname>, <given-names>F.</given-names></string-name>, &amp; <string-name><surname>Buttery</surname>, <given-names>P.</given-names></string-name> (<year>2015</year>). <article-title>Adaptive communication: Languages with more non-native speakers tend to have fewer word forms</article-title>. <source>PLoS ONE</source>, <volume>10</volume>(<issue>6</issue>), <elocation-id>e0128254</elocation-id>. <pub-id pub-id-type="doi">10.1371/journal.pone.0128254</pub-id></mixed-citation></ref>
<ref id="B10"><mixed-citation publication-type="journal"><string-name><surname>Bentz</surname>, <given-names>C.</given-names></string-name>, &amp; <string-name><surname>Winter</surname>, <given-names>B.</given-names></string-name> (<year>2013</year>). <article-title>Languages with more second language learners tend to lose nominal case</article-title>. <source>Language Dynamics and Change</source>, <volume>3</volume>(<issue>1</issue>), <fpage>1</fpage>&#8211;<lpage>27</lpage>. <pub-id pub-id-type="doi">10.1163/22105832-13030105</pub-id></mixed-citation></ref>
<ref id="B11"><mixed-citation publication-type="book"><string-name><surname>Blythe</surname>, <given-names>R.</given-names></string-name>, &amp; <string-name><surname>Croft</surname>, <given-names>W.</given-names></string-name> (<year>2021</year>). <chapter-title>How individuals change language</chapter-title>. <source>Plos one</source>, <volume>16</volume>(<issue>6</issue>), <elocation-id>e0252582</elocation-id>. <publisher-name>ArXiv</publisher-name>. <pub-id pub-id-type="doi">10.48550/arXiv.2104.10210</pub-id></mixed-citation></ref>
<ref id="B12"><mixed-citation publication-type="journal"><string-name><surname>Bolinger</surname>, <given-names>D. L. M.</given-names></string-name> (<year>1956</year>). <article-title>Subjunctive -ra and -se: &#8220;Free variation&#8221;?</article-title> <source>Hispania</source>, <volume>39</volume>(<issue>3</issue>), <fpage>345</fpage>&#8211;<lpage>349</lpage>. <pub-id pub-id-type="doi">10.2307/336019</pub-id></mixed-citation></ref>
<ref id="B13"><mixed-citation publication-type="journal"><string-name><surname>Britain</surname>, <given-names>D.</given-names></string-name>, &amp; <string-name><surname>Trudgill</surname>, <given-names>P.</given-names></string-name> (<year>2005</year>). <article-title>New dialect formation and contact-induced reallocation: Three case studies from the English fens</article-title>. <source>International Journal of English Studies</source>, <volume>5</volume>(<issue>1</issue>), <fpage>183</fpage>&#8211;<lpage>209</lpage>. <pub-id pub-id-type="doi">10.6018/ijes.5.1.47951</pub-id></mixed-citation></ref>
<ref id="B14"><mixed-citation publication-type="journal"><string-name><surname>Brown</surname>, <given-names>J.</given-names></string-name> (<year>2020</year>). <article-title>Language history from below: Standardization and koineization in Renaissance Italy</article-title>. <source>Journal of Historical Sociolinguistics</source>, <volume>6</volume>(<issue>1</issue>), <fpage>1</fpage>&#8211;<lpage>28</lpage>. <pub-id pub-id-type="doi">10.1515/jhsl-2018-0017</pub-id></mixed-citation></ref>
<ref id="B15"><mixed-citation publication-type="journal"><string-name><surname>B&#252;low</surname>, <given-names>L.</given-names></string-name>, &amp; <string-name><surname>Pfenninger</surname>, <given-names>S. E.</given-names></string-name> (<year>2021</year>). <article-title>Introduction: Reconciling approaches to intra-individual variation in psycholinguistics and variationist sociolinguistics</article-title>. <source>Linguistics Vanguard</source>, <volume>7</volume>, <fpage>1</fpage>&#8211;<lpage>10</lpage>. <pub-id pub-id-type="doi">10.1515/lingvan-2020-0027</pub-id></mixed-citation></ref>
<ref id="B16"><mixed-citation publication-type="book"><string-name><surname>B&#252;low</surname>, <given-names>L.</given-names></string-name>, <string-name><surname>Scheutz</surname>, <given-names>H.</given-names></string-name>, &amp; <string-name><surname>Wallner</surname>, <given-names>D.</given-names></string-name> (<year>2019</year>). <chapter-title>Variation and change of plural verbs in Salzburg&#8217;s base dialects</chapter-title>. In <string-name><given-names>K. J.</given-names> <surname>Braunm&#252;ller</surname></string-name> &amp; <string-name><given-names>K.</given-names> <surname>Kazzazi</surname></string-name> (Eds.), <source>Variation and change in morphosyntactic dialectal systems</source> (pp. <fpage>95</fpage>&#8211;<lpage>134</lpage>). <publisher-name>John Benjamins</publisher-name>. <pub-id pub-id-type="doi">10.1075/slcs.207.04bul</pub-id></mixed-citation></ref>
<ref id="B17"><mixed-citation publication-type="book"><string-name><surname>Bybee</surname>, <given-names>J.</given-names></string-name> (<year>1988</year>). <chapter-title>Morphology as lexical organization</chapter-title>. In <string-name><given-names>M.</given-names> <surname>Hammond</surname></string-name> &amp; <string-name><given-names>M.</given-names> <surname>Noonan</surname></string-name> (Eds.), <source>Theoretical morphology: Approaches in modern linguistics</source> (pp. <fpage>119</fpage>&#8211;<lpage>141</lpage>). <publisher-name>Academic Press</publisher-name>.</mixed-citation></ref>
<ref id="B18"><mixed-citation publication-type="journal"><string-name><surname>Bybee</surname>, <given-names>J.</given-names></string-name> (<year>1995</year>). <article-title>Regular morphology and the lexicon</article-title>. <source>Language and Cognitive Processes</source>, <volume>10</volume>(<issue>5</issue>), <fpage>425</fpage>&#8211;<lpage>455</lpage>. <pub-id pub-id-type="doi">10.1080/01690969508407111</pub-id></mixed-citation></ref>
<ref id="B19"><mixed-citation publication-type="book"><string-name><surname>Bybee</surname>, <given-names>J.</given-names></string-name> (<year>2010</year>). <chapter-title>Diachronic linguistics</chapter-title>. In <string-name><given-names>D.</given-names> <surname>Geeraerts</surname></string-name> &amp; <string-name><given-names>H.</given-names> <surname>Cuyckens</surname></string-name> (Eds.), <source>The Oxford handbook of cognitive linguistics</source> (pp. <fpage>945</fpage>&#8211;<lpage>987</lpage>). <publisher-name>Oxford University Press</publisher-name>. <pub-id pub-id-type="doi">10.1093/oxfordhb/9780199738632.013.0036</pub-id></mixed-citation></ref>
<ref id="B20"><mixed-citation publication-type="book"><string-name><surname>Bybee</surname>, <given-names>J. L.</given-names></string-name> (<year>2001</year>). <source>Phonology and language use</source>. <publisher-name>Cambridge University Press</publisher-name>.</mixed-citation></ref>
<ref id="B21"><mixed-citation publication-type="journal"><string-name><surname>Caramazza</surname>, <given-names>A.</given-names></string-name>, <string-name><surname>Laudanna</surname>, <given-names>A.</given-names></string-name>, &amp; <string-name><surname>Burani</surname>, <given-names>C.</given-names></string-name> (<year>1988</year>). <article-title>Lexical access and inflectional morphology</article-title>. <source>Cognition</source>, <volume>28</volume>(<issue>3</issue>), <fpage>297</fpage>&#8211;<lpage>332</lpage>. <pub-id pub-id-type="doi">10.1016/0010-0277(88)90025-8</pub-id></mixed-citation></ref>
<ref id="B22"><mixed-citation publication-type="journal"><string-name><surname>Cardeira</surname>, <given-names>E. A.</given-names></string-name> (<year>2009</year>). <article-title>Revisitando a periodiza&#231;&#227;o do portugu&#234;s: O portugu&#234;s m&#233;dio [Revisiting the periodization of Portuguese: Middle Portuguese]</article-title>. <source>Dom&#237;nios de Lingu@gem: Revista Eletr&#244;nica de Lingu&#237;stica</source>, <volume>3</volume>(<issue>2</issue>), <fpage>103</fpage>&#8211;<lpage>120</lpage>. <pub-id pub-id-type="doi">10.14393/DL6-v3n2a2009-7</pub-id></mixed-citation></ref>
<ref id="B23"><mixed-citation publication-type="webpage"><string-name><surname>Cardeira</surname>, <given-names>E. A.</given-names></string-name>, &amp; <string-name><surname>Fernandes</surname>, <given-names>M. A.</given-names></string-name> (<year>2008</year>). <article-title><italic>O portugu&#234;s medieval: koiniza&#231;&#227;o e elabora&#231;&#227;o</italic> [Medieval Portuguese: Koineization and elaboration]</article-title>. <source>Veredas: Revista da Associa&#231;&#227;o Internacional de Lusitanistas</source>, <volume>9</volume>, <fpage>155</fpage>&#8211;<lpage>176</lpage>. <uri>https://revistaveredas.org/index.php/ver/article/view/20</uri></mixed-citation></ref>
<ref id="B24"><mixed-citation publication-type="book"><string-name><surname>Cardona</surname>, <given-names>G.</given-names></string-name> (<year>1997</year>). <source>P&#257;&#7751;ini: His Work and Its Traditions</source>. <publisher-loc>Delhi</publisher-loc>: <publisher-name>Motilal Banarsidass</publisher-name>.</mixed-citation></ref>
<ref id="B25"><mixed-citation publication-type="journal"><string-name><surname>Cardoso</surname>, <given-names>D. B. B.</given-names></string-name> (<year>2006</year>). <article-title>O imperativo gramatical no portugu&#234;s brasileiro [The grammatical imperative in Brazilian Portuguese]</article-title>. <source>Revista de Estudos da Linguagem</source>, <volume>14</volume>(<issue>2</issue>), <fpage>317</fpage>&#8211;<lpage>340</lpage>. <pub-id pub-id-type="doi">10.17851/2237-2083.14.2.317-340</pub-id></mixed-citation></ref>
<ref id="B26"><mixed-citation publication-type="webpage"><string-name><surname>Carreira</surname>, <given-names>M. H. A.</given-names></string-name> (<year>2004</year>). <chapter-title>Les formes allocutives du portugais europ&#233;en: &#201;volutions, valeurs et fonctionnements discursifs [The allocutive forms of European Portuguese: Evolutions, values, and discourse functions]</chapter-title>. In <source>Coloquio Pronombres de Segunda Persona y Formas de Tratamiento en las Lenguas de Europa</source>. <publisher-name>Paris</publisher-name>. <uri>https://cvc.cervantes.es/lengua/coloquio_paris/ponencias/pdf/cvc_araujo.pdf</uri></mixed-citation></ref>
<ref id="B27"><mixed-citation publication-type="book"><string-name><surname>Chomsky</surname>, <given-names>N.</given-names></string-name> (<year>1965</year>). <source>Aspects of the theory of syntax</source>. <publisher-name>MIT Press</publisher-name>.</mixed-citation></ref>
<ref id="B28"><mixed-citation publication-type="book"><string-name><surname>Clark</surname>, <given-names>E. V.</given-names></string-name> (<year>1987</year>). <chapter-title>The principle of contrast: A constraint on language acquisition</chapter-title>. In <string-name><given-names>B.</given-names> <surname>MacWhinney</surname></string-name> (Ed.), <source>Mechanisms of language acquisition</source> (pp. <fpage>1</fpage>&#8211;<lpage>33</lpage>). <publisher-name>Lawrence Erlbaum Associates</publisher-name>.</mixed-citation></ref>
<ref id="B29"><mixed-citation publication-type="book"><string-name><surname>Clemens</surname>, <given-names>C.</given-names></string-name> (<year>2014</year>). <chapter-title>Brazilian Portuguese and the ecology of (post-)colonial Brazil</chapter-title>. In <string-name><given-names>S. S.</given-names> <surname>Mufwene</surname></string-name> (Ed.), <source>Iberian imperialism and language evolution in Latin America</source> (pp. <fpage>186</fpage>&#8211;<lpage>204</lpage>). <publisher-name>The University of Chicago Press</publisher-name>.</mixed-citation></ref>
<ref id="B30"><mixed-citation publication-type="book"><string-name><surname>Corbett</surname>, <given-names>G.</given-names></string-name>, <string-name><surname>Hippisley</surname>, <given-names>A.</given-names></string-name>, &amp; <string-name><surname>Brown</surname>, <given-names>D.</given-names></string-name> (<year>2001</year>). <chapter-title>Frequency, regularity and the paradigm: A perspective from Russian on a complex relation</chapter-title>. In <string-name><given-names>J.</given-names> <surname>Bybee</surname></string-name> &amp; <string-name><given-names>P.</given-names> <surname>Hooper</surname></string-name> (Eds.), <source>Frequency and the emergence of linguistic structure</source> (pp. <fpage>91</fpage>&#8211;<lpage>116</lpage>). <publisher-name>John Benjamins</publisher-name>.</mixed-citation></ref>
<ref id="B31"><mixed-citation publication-type="journal"><string-name><surname>D&#261;browska</surname>, <given-names>E.</given-names></string-name> (<year>2012</year>). <article-title>Different speakers, different grammars: Individual differences in native language attainment</article-title>. <source>Linguistic Approaches to Bilingualism</source>, <volume>2</volume>(<issue>3</issue>), <fpage>219</fpage>&#8211;<lpage>253</lpage>. <pub-id pub-id-type="doi">10.1075/lab.2.3.02dab</pub-id></mixed-citation></ref>
<ref id="B32"><mixed-citation publication-type="journal"><string-name><surname>D&#261;browska</surname>, <given-names>E.</given-names></string-name> (<year>2018</year>). <article-title>Experience, aptitude and individual differences in native language ultimate attainment</article-title>. <source>Cognition</source>, <volume>178</volume>, <fpage>222</fpage>&#8211;<lpage>235</lpage>. <pub-id pub-id-type="doi">10.1016/j.cognition.2018.05.018</pub-id></mixed-citation></ref>
<ref id="B33"><mixed-citation publication-type="webpage"><string-name><surname>Davies</surname>, <given-names>M.</given-names></string-name> (<year>2016</year>) <source>Corpus do portugu&#234;s: web/dialects</source>. Retrieved from <uri>http://www.corpusdoportugues.org/web-dial/</uri></mixed-citation></ref>
<ref id="B34"><mixed-citation publication-type="book"><string-name><surname>Dorian</surname>, <given-names>N. C.</given-names></string-name> (<year>2010a</year>). <source>Investigating variation: The effects of social organization and social setting</source>. <publisher-name>Oxford University Press</publisher-name>. <pub-id pub-id-type="doi">10.1093/acprof:oso/978</pub-id></mixed-citation></ref>
<ref id="B35"><mixed-citation publication-type="book"><string-name><surname>Dorian</surname>, <given-names>N. C.</given-names></string-name> (<year>2010b</year>). <chapter-title>Socially neutral linguistic variation: Where, why, what for, and how?</chapter-title> In <source>Investigating variation: The effects of social organization and social setting</source> (p. <fpage>271</fpage>&#8211;<lpage>296</lpage>). <publisher-name>Oxford University Press</publisher-name>. <pub-id pub-id-type="doi">10.1093/acprof:oso/9780195385939.003.0008</pub-id></mixed-citation></ref>
<ref id="B36"><mixed-citation publication-type="journal"><string-name><surname>Eckert</surname>, <given-names>P.</given-names></string-name> (<year>2012</year>). <article-title>Three waves of variation study: The emergence of meaning in the study of sociolinguistic variation</article-title>. <source>Annual Review of Anthropology</source>, <volume>41</volume>, <fpage>87</fpage>&#8211;<lpage>100</lpage>. <pub-id pub-id-type="doi">10.1146/annurev-anthro-092611-145828</pub-id></mixed-citation></ref>
<ref id="B37"><mixed-citation publication-type="journal"><string-name><surname>Ellis</surname>, <given-names>R.</given-names></string-name> (<year>1985</year>). <article-title>Sources of variability in interlanguage</article-title>. <source>Applied Linguistics</source>, <volume>6</volume>(<issue>2</issue>), <fpage>118</fpage>&#8211;<lpage>131</lpage>. <pub-id pub-id-type="doi">10.1093/applin/6.2.118</pub-id></mixed-citation></ref>
<ref id="B38"><mixed-citation publication-type="book"><string-name><surname>Entringer</surname>, <given-names>N.</given-names></string-name> (<year>2021</year>). <chapter-title>Inter- and intra-individual variation in Luxembourgish: A quantitative analysis of crowd-sourced speech data</chapter-title>. In <string-name><given-names>A.</given-names> <surname>Werth</surname></string-name>, <string-name><given-names>L.</given-names> <surname>B&#252;low</surname></string-name>, <string-name><given-names>S. E.</given-names> <surname>Pfenninger</surname></string-name>, &amp; <string-name><given-names>M.</given-names> <surname>Schiegg</surname></string-name> (Eds.), <source>Intra-individual variation in language</source> (pp. <fpage>243</fpage>&#8211;<lpage>282</lpage>). <publisher-name>De Gruyter Mouton</publisher-name>.</mixed-citation></ref>
<ref id="B39"><mixed-citation publication-type="journal"><string-name><surname>Faraco</surname>, <given-names>C. A.</given-names></string-name> (<year>1996</year>). <article-title>O tratamento &#8220;voc&#234;&#8221; em portugu&#234;s: Uma abordagem hist&#243;rica [The use of &#8220;voc&#234;&#8221; in Portuguese: A historical approach]</article-title>. <source>Fragmenta</source>, <volume>13</volume>, <fpage>51</fpage>&#8211;<lpage>82</lpage>.</mixed-citation></ref>
<ref id="B40"><mixed-citation publication-type="journal"><string-name><surname>Faraco</surname>, <given-names>C. A.</given-names></string-name> (<year>2008</year>). <article-title>Norma culta brasileira: Desatando alguns n&#243;s [Brazilian standard language: Untangling some knots]</article-title>. Par&#225;bola Editorial.</mixed-citation></ref>
<ref id="B41"><mixed-citation publication-type="journal"><string-name><surname>Faraco</surname>, <given-names>C. A.</given-names></string-name> (<year>2017</year>). <article-title>Gram&#225;tica e ensino [Grammar and teaching]</article-title>. <source>Diadorim</source>, <volume>19</volume>(<issue>2</issue>), <fpage>11</fpage>&#8211;<lpage>26</lpage>. <pub-id pub-id-type="doi">10.35520/diadorim.2017.v19n2a14443</pub-id></mixed-citation></ref>
<ref id="B43"><mixed-citation publication-type="journal"><string-name><surname>Faraco</surname>, <given-names>C. A.</given-names></string-name>, &amp; <string-name><surname>Zilles</surname>, <given-names>A. M. S.</given-names></string-name> (<year>2017</year>). <article-title>Para conhecer norma lingu&#237;stica [Getting to know the linguistic norm]</article-title>. Contexto.</mixed-citation></ref>
<ref id="B44"><mixed-citation publication-type="book"><string-name><surname>Fasold</surname>, <given-names>R. W.</given-names></string-name> (<year>1975</year>). <source>Influences on social lect level: Where you are and where your head is</source>. <publisher-name>Indiana University Linguistics Club</publisher-name>.</mixed-citation></ref>
<ref id="B45"><mixed-citation publication-type="book"><string-name><surname>Finbow</surname>, <given-names>T.</given-names></string-name>, &amp; <string-name><surname>O&#8217;Neill</surname>, <given-names>P.</given-names></string-name> (<year>2021</year>). <chapter-title>Koin&#233;ization and language contact: The social causes of morphological change in and with Portuguese</chapter-title>. In <string-name><given-names>A.</given-names> <surname>Ledgeway</surname></string-name>, <string-name><given-names>J. C.</given-names> <surname>Smith</surname></string-name>, &amp; <string-name><given-names>N.</given-names> <surname>Vincent</surname></string-name> (Eds.), <source>Periphrasis and inflexion in diachrony: A view from Romance</source> (pp. <fpage>381</fpage>&#8211;<lpage>412</lpage>). <publisher-name>Oxford University Press</publisher-name>.</mixed-citation></ref>
<ref id="B46"><mixed-citation publication-type="book"><string-name><surname>Gouveia</surname>, <given-names>C. A. M.</given-names></string-name> (<year>2008</year>). <chapter-title><italic>As dimens&#245;es da mudan&#231;a no uso das formas de tratamento em portugu&#234;s europeu</italic> [The dimensions of change in the use of forms of address in European Portuguese]</chapter-title>. In <string-name><given-names>I. M.</given-names> <surname>Duarte</surname></string-name> &amp; <string-name><given-names>F.</given-names> <surname>Oliveira</surname></string-name> (Eds.), <source>O fasc&#237;nio da linguagem</source> (pp. <fpage>91</fpage>&#8211;<lpage>100</lpage>). <publisher-name>Faculdade de Letras da Universidade do Porto</publisher-name>.</mixed-citation></ref>
<ref id="B47"><mixed-citation publication-type="book"><string-name><surname>Greenberg</surname>, <given-names>J. H.</given-names></string-name> (<year>1991</year>). <chapter-title>The last stages of grammatical elements: Contractive and expansive desemanticization</chapter-title>. In <string-name><given-names>E. C.</given-names> <surname>Traugott</surname></string-name> &amp; <string-name><given-names>B.</given-names> <surname>Heine</surname></string-name> (Eds.), <source>Approaches to grammaticalization</source> (Vol. <volume>1</volume>, pp. <fpage>301</fpage>&#8211;<lpage>314</lpage>). <publisher-name>John Benjamins</publisher-name>.</mixed-citation></ref>
<ref id="B48"><mixed-citation publication-type="book"><string-name><surname>Guy</surname>, <given-names>G. R.</given-names></string-name> (<year>1983</year>). <source>Linguistic variation in Brazilian Portuguese: Aspects of the phonology, syntax, and language history</source>. <publisher-name>University of Pennsylvania</publisher-name>.</mixed-citation></ref>
<ref id="B49"><mixed-citation publication-type="journal"><string-name><surname>Guy</surname>, <given-names>G. R.</given-names></string-name>, &amp; <string-name><surname>Hinskens</surname>, <given-names>F.</given-names></string-name> (<year>2016</year>). <article-title>Linguistic coherence: Systems, repertoires and speech communities</article-title>. <source>Lingua</source>, <volume>172&#8211;173</volume>, <fpage>1</fpage>&#8211;<lpage>9</lpage>. <pub-id pub-id-type="doi">10.1016/j.lingua.2016.01.001</pub-id></mixed-citation></ref>
<ref id="B50"><mixed-citation publication-type="book"><string-name><surname>Guy</surname>, <given-names>G. R.</given-names></string-name>, <string-name><surname>Oushiro</surname>, <given-names>L.</given-names></string-name>, &amp; <string-name><surname>Mendes</surname>, <given-names>R. B.</given-names></string-name> (<year>2022</year>). <chapter-title>Indexicality and coherence</chapter-title>. In <string-name><given-names>K. V.</given-names> <surname>Beaman</surname></string-name> &amp; <string-name><given-names>G. R.</given-names> <surname>Guy</surname></string-name> (Eds.), <source>The coherence of linguistic communities: Orderly heterogeneity and social meaning</source> (pp. <fpage>53</fpage>&#8211;<lpage>68</lpage>). <publisher-name>Routledge</publisher-name>.</mixed-citation></ref>
<ref id="B51"><mixed-citation publication-type="book"><string-name><surname>Hare</surname>, <given-names>M. L.</given-names></string-name>, <string-name><surname>Ford</surname>, <given-names>M.</given-names></string-name>, &amp; <string-name><surname>Marslen-Wilson</surname>, <given-names>W.</given-names></string-name> (<year>2001</year>). <chapter-title>Ambiguity and frequency effects in regular verb inflection</chapter-title>. In <string-name><given-names>J.</given-names> <surname>Bybee</surname></string-name> &amp; <string-name><given-names>P.</given-names> <surname>Hopper</surname></string-name> (Eds.), <source>Frequency and the emergence of linguistic structure</source> (pp. <fpage>181</fpage>&#8211;<lpage>200</lpage>). <publisher-name>John Benjamins</publisher-name>.</mixed-citation></ref>
<ref id="B52"><mixed-citation publication-type="book"><string-name><surname>Hymes</surname>, <given-names>D.</given-names></string-name> (<year>1979</year>). <chapter-title>Sapir, competence, voices</chapter-title>. In <string-name><given-names>C. J.</given-names> <surname>Fillmore</surname></string-name>, <string-name><given-names>D.</given-names> <surname>Kempler</surname></string-name>, &amp; <string-name><given-names>W. S.-Y.</given-names> <surname>Wang</surname></string-name> (Eds.), <source>Individual differences in language ability and language behavior</source> (pp. <fpage>33</fpage>&#8211;<lpage>45</lpage>). <publisher-name>Academic Press</publisher-name>.</mixed-citation></ref>
<ref id="B53"><mixed-citation publication-type="thesis"><string-name><surname>Johnson</surname>, <given-names>M. F.</given-names></string-name> (<year>2013</year>). <source>The pragmatic alternation between two negative imperatives in Argentinian Spanish</source>. Unpublished dissertation (PhD), <publisher-name>The Ohio State University</publisher-name>.</mixed-citation></ref>
<ref id="B54"><mixed-citation publication-type="webpage"><string-name><surname>Johnson</surname>, <given-names>M. F.</given-names></string-name> (<year>2016</year>). <chapter-title>Pragmatic variation in voseo and tuteo negative commands in Argentinian Spanish</chapter-title>. In <string-name><given-names>M.</given-names> <surname>Hummel</surname></string-name>, <string-name><given-names>B.</given-names> <surname>Kluge</surname></string-name>, &amp; <string-name><given-names>M. E. V&#225;zquez</given-names> <surname>Laslop</surname></string-name> (Eds.), <source>Forms of address in the Spanish of the Americas</source> (pp. <fpage>127</fpage>&#8211;<lpage>148</lpage>). <publisher-name>John Benjamins</publisher-name>. <uri>https://www.jbe-platform.com/content/books/9789027267009-ihll.10.07joh</uri></mixed-citation></ref>
<ref id="B55"><mixed-citation publication-type="book"><string-name><surname>Johnstone</surname>, <given-names>B.</given-names></string-name> (<year>1996</year>). <source>The linguistic individual: Self-expression in language and linguistics</source>. <publisher-name>Oxford University Press</publisher-name>. <pub-id pub-id-type="doi">10.1093/oso/9780195101843.001.0001</pub-id></mixed-citation></ref>
<ref id="B56"><mixed-citation publication-type="journal"><string-name><surname>Kaufmann</surname>, <given-names>S.</given-names></string-name> (<year>2002</year>). <article-title>The presumption of settledness</article-title>. <source>Chicago Linguistic Society</source>, <volume>38</volume>, <fpage>313</fpage>&#8211;<lpage>328</lpage>.</mixed-citation></ref>
<ref id="B57"><mixed-citation publication-type="journal"><string-name><surname>Kaufmann</surname>, <given-names>S.</given-names></string-name> (<year>2005</year>). <article-title>Conditional truth and future reference</article-title>. <source>Journal of Semantics</source>, <volume>22</volume>(<issue>3</issue>), <fpage>231</fpage>&#8211;<lpage>280</lpage>. <pub-id pub-id-type="doi">10.1093/jos/ffh025</pub-id></mixed-citation></ref>
<ref id="B58"><mixed-citation publication-type="book"><string-name><surname>Kerswill</surname>, <given-names>P.</given-names></string-name> (<year>2004</year>). <chapter-title>Koineization and accommodation</chapter-title>. In <string-name><given-names>J. K.</given-names> <surname>Chambers</surname></string-name>, <string-name><given-names>P.</given-names> <surname>Trudgill</surname></string-name>, &amp; <string-name><given-names>N.</given-names> <surname>Schilling-Estes</surname></string-name> (Eds.), <source>The handbook of language variation and change</source> (pp. <fpage>669</fpage>&#8211;<lpage>702</lpage>). <publisher-name>Blackwell</publisher-name>. <pub-id pub-id-type="doi">10.1002/9780470756591.ch26</pub-id></mixed-citation></ref>
<ref id="B59"><mixed-citation publication-type="book"><string-name><surname>Kerswill</surname>, <given-names>P.</given-names></string-name> (<year>2013</year>). <chapter-title>Koineization</chapter-title>. In <string-name><given-names>J. K.</given-names> <surname>Chambers</surname></string-name> &amp; <string-name><given-names>N.</given-names> <surname>Schilling</surname></string-name> (Eds.), <source>The handbook of language variation and change</source> (<edition>2nd</edition> ed., pp. <fpage>519</fpage>&#8211;<lpage>536</lpage>). <publisher-name>Wiley-Blackwell</publisher-name>. <pub-id pub-id-type="doi">10.1002/9781118335598.ch24</pub-id></mixed-citation></ref>
<ref id="B60"><mixed-citation publication-type="journal"><string-name><surname>Kerswill</surname>, <given-names>P.</given-names></string-name>, &amp; <string-name><surname>Williams</surname>, <given-names>A. N.</given-names></string-name> (<year>2000</year>). <article-title>Creating a New Town koine: Children and language change in Milton Keynes</article-title>. <source>Language in Society</source>, <volume>29</volume>, <fpage>65</fpage>&#8211;<lpage>115</lpage>. <pub-id pub-id-type="doi">10.1017/S0047404500001020</pub-id></mixed-citation></ref>
<ref id="B61"><mixed-citation publication-type="book"><string-name><surname>Kopf</surname>, <given-names>K.</given-names></string-name>, &amp; <string-name><surname>Weber</surname>, <given-names>T.</given-names></string-name> (<year>2023</year>). <source>Free variation in grammar: Empirical and theoretical approaches</source>. <publisher-name>John Benjamins</publisher-name>.</mixed-citation></ref>
<ref id="B62"><mixed-citation publication-type="webpage"><string-name><surname>Labov</surname>, <given-names>W.</given-names></string-name> (<year>2001</year>). <source>Principles of linguistic change: Social factors</source>. <publisher-name>Blackwell</publisher-name>. <uri>https://books.google.de/books?id=LS_Ux3CEI5QC</uri></mixed-citation></ref>
<ref id="B63"><mixed-citation publication-type="journal"><string-name><surname>Lamberti</surname>, <given-names>L.</given-names></string-name>, &amp; <string-name><surname>Schwenter</surname>, <given-names>S.</given-names></string-name> (<year>2018</year>). <article-title><italic>Testando o papel da refer&#234;ncia temporal na forma do imperativo em portugu&#234;s brasileiro</italic> [Testing the role of temporal reference in the form of the imperative in Brazilian Portuguese]</article-title>. <source>Revista Lingu&#237;&#643;tica</source>, <volume>14</volume>, <fpage>231</fpage>&#8211;<lpage>258</lpage>. <pub-id pub-id-type="doi">10.31513/linguistica.2018.v14n2a17625</pub-id></mixed-citation></ref>
<ref id="B64"><mixed-citation publication-type="journal"><string-name><surname>Lass</surname>, <given-names>R.</given-names></string-name> (<year>1990</year>). <article-title>How to do things with junk: Exaptation in language evolution</article-title>. <source>Journal of Linguistics</source>, <volume>26</volume>(<issue>1</issue>), <fpage>79</fpage>&#8211;<lpage>102</lpage>. <pub-id pub-id-type="doi">10.1017/S0022226700014432</pub-id></mixed-citation></ref>
<ref id="B65"><mixed-citation publication-type="book"><string-name><surname>Lass</surname>, <given-names>R.</given-names></string-name> (<year>1997</year>). <source>Historical linguistics and language change</source>. <publisher-name>Cambridge University Press</publisher-name>. <pub-id pub-id-type="doi">10.1017/CBO9780511620928</pub-id></mixed-citation></ref>
<ref id="B66"><mixed-citation publication-type="webpage"><string-name><surname>Le Page</surname>, <given-names>R. B.</given-names></string-name>, &amp; <string-name><surname>Tabouret-Keller</surname>, <given-names>A.</given-names></string-name> (<year>1985</year>). <source>Acts of identity: Creole-based approaches to language and ethnicity</source>. <publisher-name>Cambridge University Press</publisher-name>. <uri>https://books.google.de/books?id=cbQ8AAAAIAAJ</uri></mixed-citation></ref>
<ref id="B68"><mixed-citation publication-type="journal"><string-name><surname>Lupyan</surname>, <given-names>G.</given-names></string-name>, &amp; <string-name><surname>Dale</surname>, <given-names>R.</given-names></string-name> (<year>2010</year>). <article-title>Language structure is partly determined by social structure</article-title>. <source>PLoS ONE</source>, <volume>5</volume>(<issue>1</issue>), <elocation-id>e8559</elocation-id>. <pub-id pub-id-type="doi">10.1371/journal.pone.0008559</pub-id></mixed-citation></ref>
<ref id="B69"><mixed-citation publication-type="journal"><string-name><surname>MacKenzie</surname>, <given-names>L.</given-names></string-name> (<year>2019</year>). <article-title>Perturbing the community grammar: Individual differences and community-level constraints on sociolinguistic variation</article-title>. <source>Glossa: A Journal of General Linguistics</source>, <volume>4</volume>(<issue>1</issue>), <fpage>28:1</fpage>&#8211;<lpage>28:23</lpage>. <pub-id pub-id-type="doi">10.5334/gjgl.622</pub-id></mixed-citation></ref>
<ref id="B70"><mixed-citation publication-type="book"><string-name><surname>McWhorter</surname>, <given-names>J. H.</given-names></string-name> (<year>2007</year>). <source>Language interrupted: Signs of non-native acquisition in standard language grammars</source>. <publisher-name>Oxford University Press</publisher-name>.</mixed-citation></ref>
<ref id="B71"><mixed-citation publication-type="journal"><string-name><surname>Menon</surname>, <given-names>O. P.</given-names></string-name> (<year>1995</year>). <article-title>O sistema pronominal do portugu&#234;s do Brasil [The pronominal system of Brazilian Portuguese]</article-title>. <source>Letras</source>, <volume>44</volume>, <fpage>91</fpage>&#8211;<lpage>106</lpage>.</mixed-citation></ref>
<ref id="B72"><mixed-citation publication-type="book"><string-name><surname>Menon</surname>, <given-names>O. P.</given-names></string-name>, &amp; <string-name><surname>Loregian-Penkal</surname>, <given-names>L.</given-names></string-name> (<year>2003</year>). <chapter-title>Varia&#231;&#227;o do indiv&#237;duo e da comunidade: Tu/voc&#234; no sul do Brasil [Individual and community variation: <italic>Tu/voc&#234;</italic> in southern Brazil]</chapter-title>. In <string-name><given-names>P.</given-names> <surname>Vandresen</surname></string-name> (Ed.), <source>Varia&#231;&#227;o e mudan&#231;a no portugu&#234;s falado no sul</source> (pp. <fpage>147</fpage>&#8211;<lpage>188</lpage>). <publisher-name>Editora Educat</publisher-name>.</mixed-citation></ref>
<ref id="B73"><mixed-citation publication-type="journal"><string-name><surname>Milroy</surname>, <given-names>J.</given-names></string-name> (<year>2001</year>). <article-title>Language ideologies and the consequences of standardization</article-title>. <source>Journal of Sociolinguistics</source>, <volume>5</volume>(<issue>4</issue>), <fpage>530</fpage>&#8211;<lpage>555</lpage>. <pub-id pub-id-type="doi">10.1111/1467-9481.00163</pub-id></mixed-citation></ref>
<ref id="B74"><mixed-citation publication-type="webpage"><string-name><surname>Milroy</surname>, <given-names>J.</given-names></string-name>, &amp; <string-name><surname>Milroy</surname>, <given-names>L.</given-names></string-name> (<year>1999</year>). <source>Authority in language: Investigating Standard English</source> (<edition>3rd</edition> ed.). <publisher-name>Routledge</publisher-name>. <uri>https://books.google.de/books?id=z3HNztsa0ooC</uri></mixed-citation></ref>
<ref id="B75"><mixed-citation publication-type="journal"><string-name><surname>Moore</surname>, <given-names>E.</given-names></string-name>, &amp; <string-name><surname>Carter</surname>, <given-names>P.</given-names></string-name> (<year>2015</year>). <article-title>Dialect contact and distinctiveness: The social meaning of language variation in an island community</article-title>. <source>Journal of Sociolinguistics</source>, <volume>19</volume>(<issue>1</issue>), <fpage>3</fpage>&#8211;<lpage>36</lpage>. <pub-id pub-id-type="doi">10.1111/josl.12107</pub-id></mixed-citation></ref>
<ref id="B76"><mixed-citation publication-type="book"><string-name><surname>Moser</surname>, <given-names>A. M.</given-names></string-name> (<year>2023</year>). <chapter-title>Optionality in the syntax of Germanic traditional dialects: On (at least) two types of intra-individual variation</chapter-title>. In <string-name><given-names>K.</given-names> <surname>Kopf</surname></string-name> &amp; <string-name><given-names>T.</given-names> <surname>Weber</surname></string-name> (Eds.), <source>Free variation in grammar: Empirical and theoretical approaches</source> (pp. <fpage>48</fpage>&#8211;<lpage>73</lpage>). <publisher-name>John Benjamins</publisher-name>.</mixed-citation></ref>
<ref id="B77"><mixed-citation publication-type="book"><string-name><surname>Moura Neves</surname>, <given-names>M. H. de.</given-names></string-name> (<year>2002</year>). <source>A gram&#225;tica: Hist&#243;ria, teoria e an&#225;lise, ensino [Grammar: History, theory, analysis, and teaching]</source>. Editora <publisher-name>UNESP</publisher-name>.</mixed-citation></ref>
<ref id="B78"><mixed-citation publication-type="journal"><string-name><surname>Mowrey</surname>, <given-names>R.</given-names></string-name>, &amp; <string-name><surname>Pagliuca</surname>, <given-names>W.</given-names></string-name> (<year>1995</year>). <article-title>The reductive character of articulatory evolution</article-title>. <source>Rivista di Linguistica</source>, <volume>7</volume>, <fpage>37</fpage>&#8211;<lpage>124</lpage>.</mixed-citation></ref>
<ref id="B79"><mixed-citation publication-type="book"><string-name><surname>Naro</surname>, <given-names>A. J.</given-names></string-name>, &amp; <string-name><surname>Scherre</surname>, <given-names>M. M. P.</given-names></string-name> (<year>2007</year>). <source>Origens do portugu&#234;s brasileiro</source> [<italic>Origins of Brazilian Portuguese</italic>] (Vol. <volume>20</volume>). <publisher-name>Par&#225;bola</publisher-name> Editorial.</mixed-citation></ref>
<ref id="B80"><mixed-citation publication-type="journal"><string-name><surname>Nettle</surname>, <given-names>D.</given-names></string-name> (<year>2012</year>). <article-title>Social scale and structural complexity in human languages</article-title>. <source>Philosophical Transactions of the Royal Society B: Biological Sciences</source>, <volume>367</volume>(<issue>1597</issue>), <fpage>1829</fpage>&#8211;<lpage>1836</lpage>. <pub-id pub-id-type="doi">10.1098/rstb.2011.0216</pub-id></mixed-citation></ref>
<ref id="B81"><mixed-citation publication-type="book"><string-name><surname>Nichols</surname>, <given-names>J.</given-names></string-name>, &amp; <string-name><surname>Bentz</surname>, <given-names>C.</given-names></string-name> (<year>2017</year>). <chapter-title>Morphological complexity of languages reflects the settlement history of the Americas</chapter-title>. In <string-name><given-names>K.</given-names> <surname>Harvati</surname></string-name>, <string-name><given-names>G.</given-names> <surname>J&#228;ger</surname></string-name>, &amp; <string-name><given-names>H.</given-names> <surname>Reyes-Centeno</surname></string-name> (Eds.), <source>New perspectives on the peopling of the Americas</source> (pp. <fpage>13</fpage>&#8211;<lpage>26</lpage>). <publisher-name>Kerns Verlag</publisher-name>.</mixed-citation></ref>
<ref id="B82"><mixed-citation publication-type="book"><string-name><surname>Norde</surname>, <given-names>M.</given-names></string-name> (<year>2002</year>). <chapter-title>The final stages of grammaticalization: Affixhood and beyond</chapter-title>. In <string-name><given-names>I.</given-names> <surname>Wischer</surname></string-name> &amp; <string-name><given-names>G.</given-names> <surname>Diewald</surname></string-name> (Eds.), <source>New reflections on grammaticalization</source> (pp. <fpage>45</fpage>&#8211;<lpage>81</lpage>). <publisher-name>John Benjamins</publisher-name>. <pub-id pub-id-type="doi">10.1075/tsl.49.06nor</pub-id></mixed-citation></ref>
<ref id="B83"><mixed-citation publication-type="journal"><string-name><surname>O&#8217;Neill</surname>, <given-names>P.</given-names></string-name> (<year>2022</year>). <article-title>Language and education in Brazil: Linguistic structural problems and their historical origins</article-title>. <source>Modern Languages Open</source>, <volume>2022</volume>(<issue>1</issue>), <fpage>1</fpage>&#8211;<lpage>21</lpage>. <pub-id pub-id-type="doi">10.3828/mlo.v0i0.384</pub-id></mixed-citation></ref>
<ref id="B85"><mixed-citation publication-type="book"><string-name><surname>Oliveira</surname>, <given-names>J. M.</given-names></string-name> (<year>2017</year>). <chapter-title>O imperativo gramatical nas capitais do Nordeste: an&#225;lise sociolingu&#237;stica de dados do ALiB [The grammatical imperative in the capitals of the Northeast: Sociolinguistic analysis of ALiB data]</chapter-title>. In <string-name><given-names>N. S.</given-names> <surname>Lopes</surname></string-name>, <string-name><given-names>J. M.</given-names> <surname>Oliveira</surname></string-name>, &amp; <string-name><given-names>L. M. J.</given-names> <surname>Parcero</surname></string-name> (Eds.), <source>Estudos sobre o portugu&#234;s do Nordeste: L&#237;ngua, lugar e sociedade</source> (pp. <fpage>27</fpage>&#8211;<lpage>44</lpage>). <publisher-name>Blucher</publisher-name>. <pub-id pub-id-type="doi">10.5151/9788580392395-02</pub-id></mixed-citation></ref>
<ref id="B86"><mixed-citation publication-type="journal"><string-name><surname>Paredes Silva</surname>, <given-names>V. L.</given-names></string-name>, <string-name><surname>Santos</surname>, <given-names>G. M. dos</given-names></string-name>, &amp; <string-name><surname>Ribeiro</surname>, <given-names>T. dos.</given-names></string-name> (<year>2000</year>). <article-title>Varia&#231;&#227;o na 2&#170; pessoa: O pronome sujeito e a forma do imperativo [Variation in the 2nd person: The subject pronoun and the imperative form]</article-title>. <source>Gragoat&#225;</source>, <volume>9</volume>, <fpage>115</fpage>&#8211;<lpage>123</lpage>.</mixed-citation></ref>
<ref id="B87"><mixed-citation publication-type="book"><string-name><surname>Penkal</surname>, <given-names>L.</given-names></string-name> (<year>2004</year>). <source>Re(an&#225;lise) da refer&#234;ncia de segunda pessoa na fala da regi&#227;o sul</source> [Re(analysis) of second-person reference in speech from the southern region] (Unpublished MA dissertation). <publisher-name>Universidade Federal do Paran&#225;</publisher-name>.</mixed-citation></ref>
<ref id="B88"><mixed-citation publication-type="book"><string-name><surname>Penny</surname>, <given-names>R. J.</given-names></string-name> (<year>2000</year>). <source>Variation and change in Spanish</source>. <publisher-name>Cambridge University Press</publisher-name>.</mixed-citation></ref>
<ref id="B89"><mixed-citation publication-type="book"><string-name><surname>Perini</surname>, <given-names>M. A.</given-names></string-name> (<year>2003</year>). <source>Sofrendo a gram&#225;tica</source>. <publisher-name>&#193;tica</publisher-name>.</mixed-citation></ref>
<ref id="B90"><mixed-citation publication-type="book"><string-name><surname>Pessoa</surname>, <given-names>M. D. B.</given-names></string-name> (<year>2003</year>). <source>Formac&#807;a&#771;o de uma variedade urbana e semi-oralidade: O caso do Recife, Brasil</source> [<italic>Formation of an urban variety and semi-orality: The case of Recife, Brazil</italic>]. <publisher-name>Niemeyer</publisher-name>.</mixed-citation></ref>
<ref id="B91"><mixed-citation publication-type="book"><collab>R Core Team. (</collab> <year>2018</year>). <source>R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing</source>, <publisher-name>Vienna</publisher-name>.</mixed-citation></ref>
<ref id="B92"><mixed-citation publication-type="thesis"><string-name><surname>Sampaio</surname>, <given-names>D. A.</given-names></string-name> (<year>2001</year>). <source>Modo imperativo: Sua manifesta&#231;&#227;o/express&#227;o no portugu&#234;s contempor&#226;neo</source> [<italic>Imperative mood: Its manifestation/expression in contemporary Portuguese</italic>] (Unpublished undergraduate thesis). <publisher-name>Universidade Federal da Bahia</publisher-name>, <publisher-loc>Salvador, Brazil</publisher-loc>.</mixed-citation></ref>
<ref id="B93"><mixed-citation publication-type="book"><string-name><surname>Sampson</surname>, <given-names>G.</given-names></string-name>, <string-name><surname>Gil</surname>, <given-names>D.</given-names></string-name>, &amp; <string-name><surname>Trudgill</surname>, <given-names>P.</given-names></string-name> (<year>2009</year>). <source>Language complexity as an evolving variable</source>. <publisher-name>Oxford University Press</publisher-name>.</mixed-citation></ref>
<ref id="B94"><mixed-citation publication-type="book"><string-name><surname>Scherre</surname>, <given-names>M. M. P.</given-names></string-name> (<year>2002</year>). <chapter-title>A norma do imperativo e o imperativo da norma: Uma reflex&#227;o sociolingu&#237;stica sobre o conceito de erro [The norm of the imperative and the imperative of the norm: A sociolinguistic reflection on the concept of error]</chapter-title>. In <string-name><given-names>M.</given-names> <surname>Bagno</surname></string-name> (Ed.), <source>Lingu&#237;stica da norma</source> (pp. <fpage>217</fpage>&#8211;<lpage>251</lpage>). <publisher-name>Loyola</publisher-name>.</mixed-citation></ref>
<ref id="B95"><mixed-citation publication-type="book"><string-name><surname>Scherre</surname>, <given-names>M. M. P.</given-names></string-name> (<year>2003</year>). <chapter-title>Norma e uso na express&#227;o do imperativo em revistas em quadrinhos da Turma da M&#244;nica [Norm and usage in the expression of the imperative in Turma da M&#244;nica comics]</chapter-title>. In <string-name><given-names>D. E. G.</given-names> <surname>da Silva</surname></string-name>, <string-name><given-names>G. M. P.</given-names> <surname>Lara</surname></string-name>, &amp; <string-name><given-names>M. A.</given-names> <surname>Magazzo</surname></string-name> (Orgs.), <source>Estudos de linguagem &#8211; Inter &#8211; rela&#231;&#245;es e perspectivas</source> (pp. <fpage>177</fpage>&#8211;<lpage>191</lpage>). <publisher-loc>Campo Grande</publisher-loc>: <publisher-name>UFMS</publisher-name>.</mixed-citation></ref>
<ref id="B96"><mixed-citation publication-type="book"><string-name><surname>Scherre</surname>, <given-names>M. M. P.</given-names></string-name> (<year>2004</year>). <chapter-title>Norma e uso &#8211; O imperativo no portugu&#234;s brasileiro [Norm and usage &#8211; The imperative in Brazilian Portuguese]</chapter-title>. In <string-name><given-names>W.</given-names> <surname>Dietrich</surname></string-name> &amp; <string-name><given-names>V.</given-names> <surname>Noll</surname></string-name> (Eds.), <source>O portugu&#234;s do Brasil: Perspectivas da pesquisa atual</source> (Vol. <volume>1</volume>, pp. <fpage>231</fpage>&#8211;<lpage>260</lpage>). <publisher-name>Iberoamericana &#8211; Vervuert</publisher-name>.</mixed-citation></ref>
<ref id="B97"><mixed-citation publication-type="webpage"><string-name><surname>Scherre</surname>, <given-names>M. M. P.</given-names></string-name> (<year>2007</year>). <article-title>Aspectos sincr&#244;nicos e diacr&#244;nicos do imperativo gramatical no portugu&#234;s brasileiro [Synchronic and diachronic aspects of the grammatical imperative in Brazilian Portuguese]</article-title>. <source>Alfa: Revista de Lingu&#237;stica</source>, <volume>51</volume>(<issue>1</issue>), <fpage>189</fpage>&#8211;<lpage>222</lpage>. <uri>https://periodicos.fclar.unesp.br/alfa/article/view/1432/1133</uri></mixed-citation></ref>
<ref id="B98"><mixed-citation publication-type="book"><string-name><surname>Scherre</surname>, <given-names>M. M. P.</given-names></string-name> (<year>2008</year>). <chapter-title>O imperativo gramatical no portugu&#234;s brasileiro: Reflexo de mudan&#231;a lingu&#237;stica na escrita de revistas de quadrinhos [The grammatical imperative in Brazilian Portuguese: Reflection of linguistic change in comics]</chapter-title>. In <string-name><given-names>S.</given-names> <surname>Votre</surname></string-name> &amp; <string-name><given-names>C.</given-names> <surname>Roncarati</surname></string-name> (Eds.), <source>A lingu&#237;stica no Brasil: Uma homenagem acad&#234;mica</source> (pp. <fpage>306</fpage>&#8211;<lpage>319</lpage>). <elocation-id>7Letras</elocation-id>.</mixed-citation></ref>
<ref id="B99"><mixed-citation publication-type="journal"><string-name><surname>Scherre</surname>, <given-names>M. M. P.</given-names></string-name> (<year>2012</year>). <article-title>Padr&#245;es sociolingu&#237;sticos do portugu&#234;s brasileiro: A import&#226;ncia da pesquisa variacionista [Sociolinguistic patterns of Brazilian Portuguese: The importance of variationist research]</article-title>. <source>Revista do Programa de P&#243;s-Gradua&#231;&#227;o em Estudo de Linguagens</source>, <volume>4</volume>, <fpage>1</fpage>&#8211;<lpage>32</lpage>. <pub-id pub-id-type="doi">10.35499/tl.v0i4.167</pub-id></mixed-citation></ref>
<ref id="B100"><mixed-citation publication-type="journal"><string-name><surname>Scherre</surname>, <given-names>M. M. P.</given-names></string-name>, <string-name><surname>Cardoso</surname>, <given-names>D. B. B.</given-names></string-name>, <string-name><surname>Lunguinho</surname>, <given-names>M. V.</given-names></string-name>, &amp; <string-name><surname>Salles</surname>, <given-names>H.</given-names></string-name> (<year>2007</year>). <article-title>Reflex&#245;es sobre o imperativo em portugu&#234;s [Reflections on the imperative in Portuguese]</article-title>. <source>DELTA: Documenta&#231;&#227;o de Estudos em Lingu&#237;stica Te&#243;rica e Aplicada</source>, <volume>23</volume>, <fpage>193</fpage>&#8211;<lpage>241</lpage>. <pub-id pub-id-type="doi">10.1590/S0102-44502007000300010</pub-id></mixed-citation></ref>
<ref id="B101"><mixed-citation publication-type="book"><string-name><surname>Scherre</surname>, <given-names>M. M. P.</given-names></string-name>, <string-name><surname>Dias</surname>, <given-names>E. P.</given-names></string-name>, <string-name><surname>Andrade</surname>, <given-names>C.</given-names></string-name>, &amp; <string-name><surname>Martins</surname>, <given-names>G. F.</given-names></string-name> (<year>2015</year>). <chapter-title>Varia&#231;&#227;o dos pronomes &#8220;tu&#8221; e &#8220;voc&#234;&#8221; [Variation of the pronouns &#8220;tu&#8221; and &#8220;voc&#234;&#8221;]</chapter-title>. In <string-name><given-names>M. A.</given-names> <surname>Martins</surname></string-name> &amp; <string-name><given-names>J.</given-names> <surname>Abra&#231;ado</surname></string-name> (Eds.), <source>Mapeamento sociolingu&#237;stico do portugu&#234;s brasileiro</source> (pp. <fpage>133</fpage>&#8211;<lpage>172</lpage>). S&#227;o Paulo: Contexto.</mixed-citation></ref>
<ref id="B102"><mixed-citation publication-type="book"><string-name><surname>Scherre</surname>, <given-names>M. M. P.</given-names></string-name>, &amp; <string-name><surname>Naro</surname>, <given-names>A. J.</given-names></string-name> (<year>1998</year>). <chapter-title>Sobre a concord&#226;ncia de n&#250;mero no portugu&#234;s falado do Brasil [On number agreement in spoken Brazilian Portuguese]</chapter-title>. In <string-name><given-names>G.</given-names> <surname>Ruffino</surname></string-name> (Ed.), <source>Dialettologia, geolinguistica, sociolinguistica: Atti del XXI Congresso Internazionale di Linguistica e Filologia Romanza</source> (pp. <fpage>509</fpage>&#8211;<lpage>523</lpage>). <publisher-name>Max Niemeyer Verlag</publisher-name>.</mixed-citation></ref>
<ref id="B103"><mixed-citation publication-type="journal"><string-name><surname>Scherre</surname>, <given-names>M. M. P.</given-names></string-name>, &amp; <string-name><surname>Naro</surname>, <given-names>A. J.</given-names></string-name> (<year>2014</year>). <article-title>Sociolinguistic correlates of negative evaluation: Variable concord in Rio de Janeiro</article-title>. <source>Journal of Portuguese Linguistics</source>, <volume>26</volume>(<issue>3</issue>), <fpage>331</fpage>&#8211;<lpage>357</lpage>. <pub-id pub-id-type="doi">10.1017/S0954394514000143</pub-id></mixed-citation></ref>
<ref id="B104"><mixed-citation publication-type="webpage"><string-name><surname>Schieffelin</surname>, <given-names>B. B.</given-names></string-name>, <string-name><surname>Woolard</surname>, <given-names>K. A.</given-names></string-name>, &amp; <string-name><surname>Kroskrity</surname>, <given-names>P. V.</given-names></string-name> (<year>1998</year>). <source>Language ideologies: Practice and theory</source>. <publisher-name>Oxford University Press</publisher-name>. <uri>https://books.google.cz/books?id=yHVOcjr5R-cC</uri></mixed-citation></ref>
<ref id="B105"><mixed-citation publication-type="journal"><string-name><surname>Schilling-Estes</surname>, <given-names>N.</given-names></string-name> (<year>1998</year>). <article-title>Investigating &#8220;self-conscious&#8221; speech: The performance register in Ocracoke English</article-title>. <source>Language in Society</source>, <volume>27</volume>(<issue>1</issue>), <fpage>53</fpage>&#8211;<lpage>83</lpage>. <pub-id pub-id-type="doi">10.1017/S0047404500019722</pub-id></mixed-citation></ref>
<ref id="B106"><mixed-citation publication-type="book"><string-name><surname>Schwenter</surname>, <given-names>S.</given-names></string-name>, &amp; <string-name><surname>Hoff</surname>, <given-names>M.</given-names></string-name> (<year>2023</year>). <chapter-title>The role of context in imperative form choice</chapter-title>. In <string-name><given-names>R. Rodr&#237;guez</given-names> <surname>Rosique</surname></string-name> &amp; <string-name><given-names>J. M. Antol&#237;</given-names> <surname>Mart&#237;nez</surname></string-name> (Eds.), <source>Verb and context: The impact of shared knowledge on TAME categories</source> (pp. <fpage>327</fpage>&#8211;<lpage>350</lpage>). <publisher-name>John Benjamins</publisher-name>.</mixed-citation></ref>
<ref id="B107"><mixed-citation publication-type="journal"><string-name><surname>Siegel</surname>, <given-names>J.</given-names></string-name> (<year>1985</year>). <article-title>Koines and koineization</article-title>. <source>Language in Society</source>, <volume>14</volume>(<issue>3</issue>), <fpage>357</fpage>&#8211;<lpage>378</lpage>. <pub-id pub-id-type="doi">10.1017/S0047404500011313</pub-id></mixed-citation></ref>
<ref id="B108"><mixed-citation publication-type="book"><string-name><surname>Smith</surname>, <given-names>J. C.</given-names></string-name> (<year>2011</year>). <chapter-title>Change and continuity in form-function relationships</chapter-title>. In <string-name><given-names>J. C.</given-names> <surname>Smith</surname></string-name>, <string-name><given-names>M.</given-names> <surname>Maiden</surname></string-name>, &amp; <string-name><given-names>A.</given-names> <surname>Ledgeway</surname></string-name> (Eds.), <source>The Romance Languages</source> (Vol. <volume>1</volume>, pp. <fpage>268</fpage>&#8211;<lpage>317</lpage>). <publisher-name>Cambridge University Press</publisher-name>. <pub-id pub-id-type="doi">10.1017/CHOL9780521800723.008</pub-id></mixed-citation></ref>
<ref id="B109"><mixed-citation publication-type="book"><string-name><surname>Soares Gomes</surname>, <given-names>M.</given-names></string-name> (<year>2019</year>). <source>A gram&#225;tica pedag&#243;gica do portugu&#234;s brasileiro (Bagno, 2012) e o ensino de gram&#225;tica</source> [<italic>The pedagogical grammar of Brazilian Portuguese (Bagno, 2012) and grammar teaching</italic>] (Unpublished undergraduate thesis). <publisher-name>Universidade Federal do Oeste do Par&#225;</publisher-name>.</mixed-citation></ref>
<ref id="B110"><mixed-citation publication-type="book"><string-name><surname>Stemberger</surname>, <given-names>J.</given-names></string-name>, &amp; <string-name><surname>MacWhinney</surname>, <given-names>B.</given-names></string-name> (<year>1988</year>). <chapter-title>Are inflected forms stored in the lexicon?</chapter-title> In <string-name><given-names>M.</given-names> <surname>Hammond</surname></string-name> &amp; <string-name><given-names>M.</given-names> <surname>Noonan</surname></string-name> (Eds.), <source>Theoretical morphology: Approaches in modern linguistics</source> (pp. <fpage>101</fpage>&#8211;<lpage>116</lpage>). <publisher-name>Academic Press</publisher-name>.</mixed-citation></ref>
<ref id="B111"><mixed-citation publication-type="journal"><string-name><surname>Stevens</surname>, <given-names>M. H. J.</given-names></string-name> (<year>2022</year>). <article-title>Individual variation and the coarticulatory path to sound change: Agent-based modeling of /str/ in English and Italian</article-title>. <source>Glossa: A Journal of General Linguistics</source>, <volume>7</volume>(<issue>1</issue>), <fpage>1</fpage>&#8211;<lpage>34</lpage>. <pub-id pub-id-type="doi">10.16995/glossa.8869</pub-id></mixed-citation></ref>
<ref id="B112"><mixed-citation publication-type="book"><string-name><surname>Stuart-Smith</surname>, <given-names>J.</given-names></string-name>, &amp; <string-name><surname>Timmins</surname>, <given-names>C.</given-names></string-name> (<year>2010</year>). <chapter-title>The role of the individual in language variation and change</chapter-title>. In <string-name><given-names>C.</given-names> <surname>Llamas</surname></string-name> &amp; <string-name><given-names>D.</given-names> <surname>Watt</surname></string-name> (Eds.), <source>Language and identities</source> (pp. <fpage>39</fpage>&#8211;<lpage>54</lpage>). <publisher-name>Edinburgh University Press</publisher-name>. <pub-id pub-id-type="doi">10.1515/9780748635788-008</pub-id></mixed-citation></ref>
<ref id="B113"><mixed-citation publication-type="journal"><string-name><surname>Thomason</surname>, <given-names>R.</given-names></string-name>, &amp; <string-name><surname>Gupta</surname>, <given-names>A.</given-names></string-name> (<year>1980</year>). <article-title>A theory of conditionals in the context of branching time</article-title>. <source>The Philosophical Review</source>, <volume>89</volume>(<issue>1</issue>), <fpage>65</fpage>&#8211;<lpage>90</lpage>. <pub-id pub-id-type="doi">10.2307/2184864</pub-id></mixed-citation></ref>
<ref id="B114"><mixed-citation publication-type="journal"><string-name><surname>Thornton</surname>, <given-names>A. M.</given-names></string-name> (<year>2012</year>). <article-title>Reduction and maintenance of overabundance: A case study on Italian verb paradigms</article-title>. <source>Word Structure</source>, <volume>5</volume>(<issue>2</issue>), <fpage>183</fpage>&#8211;<lpage>207</lpage>. <pub-id pub-id-type="doi">10.3366/word.2012.0026</pub-id></mixed-citation></ref>
<ref id="B115"><mixed-citation publication-type="book"><string-name><surname>Thornton</surname>, <given-names>A. M.</given-names></string-name> (<year>2019</year>). <chapter-title>Overabundance: A canonical typology</chapter-title>. In <string-name><given-names>F.</given-names> <surname>Rainer</surname></string-name>, <string-name><given-names>F.</given-names> <surname>Gardani</surname></string-name>, <string-name><given-names>W. U.</given-names> <surname>Dressler</surname></string-name>, &amp; <string-name><given-names>H. C.</given-names> <surname>Lusch&#252;tzky</surname></string-name> (Eds.), <source>Competition in inflection and word-formation</source> (pp. <fpage>223</fpage>&#8211;<lpage>258</lpage>). <publisher-name>Springer International Publishing</publisher-name>. <pub-id pub-id-type="doi">10.1007/978-3-030-02550-2_9</pub-id></mixed-citation></ref>
<ref id="B116"><mixed-citation publication-type="book"><string-name><surname>Trudgill</surname>, <given-names>P.</given-names></string-name> (<year>1986</year>). <source>Dialects in contact</source>. <publisher-name>Blackwell</publisher-name>.</mixed-citation></ref>
<ref id="B117"><mixed-citation publication-type="journal"><string-name><surname>Trudgill</surname>, <given-names>P.</given-names></string-name> (<year>2001a</year>). <article-title>Contact and simplification: Historical baggage and directionality in linguistic change</article-title>. <source>Linguistic Typology</source>, <volume>5</volume>(<issue>2&#8211;3</issue>), <fpage>371</fpage>&#8211;<lpage>374</lpage>. <pub-id pub-id-type="doi">10.1515/lity.2001.002</pub-id></mixed-citation></ref>
<ref id="B118"><mixed-citation publication-type="book"><string-name><surname>Trudgill</surname>, <given-names>P.</given-names></string-name> (<year>2001b</year>). <source>Sociolinguistic variation and change</source>. <publisher-name>Edinburgh University Press</publisher-name>. <pub-id pub-id-type="doi">10.1515/9781474473330</pub-id></mixed-citation></ref>
<ref id="B119"><mixed-citation publication-type="book"><string-name><surname>Trudgill</surname>, <given-names>P.</given-names></string-name> (<year>2004</year>). <source>New-dialect formation: the inevitability of colonial englishes</source> (<edition>1</edition> ed.). <publisher-name>Edinburgh University Press</publisher-name>. <pub-id pub-id-type="doi">10.3366/j.ctv2f4vkzd</pub-id></mixed-citation></ref>
<ref id="B120"><mixed-citation publication-type="journal"><string-name><surname>Trudgill</surname>, <given-names>P.</given-names></string-name> (<year>2008</year>). <article-title>Colonial dialect contact in the history of European languages: On the irrelevance of identity to new-dialect formation</article-title>. <source>Language in Society</source>, <volume>37</volume>(<issue>2</issue>), <fpage>241</fpage>&#8211;<lpage>254</lpage>. <pub-id pub-id-type="doi">10.1017/S0047404508080287</pub-id></mixed-citation></ref>
<ref id="B121"><mixed-citation publication-type="book"><string-name><surname>Trudgill</surname>, <given-names>P.</given-names></string-name> (<year>2010</year>). <source>Investigations in sociohistorical linguistics: Stories of colonisation and contact</source>. <publisher-name>Cambridge University Press</publisher-name>. <pub-id pub-id-type="doi">10.1017/CBO9780511760501</pub-id></mixed-citation></ref>
<ref id="B122"><mixed-citation publication-type="book"><string-name><surname>Trudgill</surname>, <given-names>P.</given-names></string-name> (<year>2011</year>). <source>Sociolinguistic typology: Social determinants of linguistic complexity</source>. <publisher-name>Oxford University Press</publisher-name>.</mixed-citation></ref>
<ref id="B123"><mixed-citation publication-type="book"><string-name><surname>Tuten</surname>, <given-names>D. N.</given-names></string-name> (<year>2003</year>). <source>Koineization in medieval Spanish</source>. <publisher-name>Mouton de Gruyter</publisher-name>.</mixed-citation></ref>
<ref id="B124"><mixed-citation publication-type="journal"><string-name><surname>Tuten</surname>, <given-names>D. N.</given-names></string-name> (<year>2008</year>). <article-title>Identity formation and accommodation: Sequential and simultaneous relations</article-title>. <source>Language in Society</source>, <volume>37</volume>(<issue>2</issue>), <fpage>259</fpage>&#8211;<lpage>262</lpage>. <pub-id pub-id-type="doi">10.1017/S0047404508080305</pub-id></mixed-citation></ref>
<ref id="B125"><mixed-citation publication-type="book"><string-name><surname>Tuten</surname>, <given-names>D. N.</given-names></string-name> (<year>2023</year>). <chapter-title>La formaci&#243;n de nuevas variedades: koineizaci&#243;n y criollizaci&#243;n [The formation of new varieties: koineization and creolization]</chapter-title>. In <string-name><given-names>S. N.</given-names> <surname>Dworkin</surname></string-name>, <string-name><given-names>G.</given-names> <surname>Claver&#237;a</surname></string-name>, &amp; <string-name><given-names>&#193;. S. Octavio</given-names> <surname>de Toledo</surname></string-name> (Eds.), <source>Ling&#252;&#237;stica hist&#243;rica del espa&#241;ol: the Routledge handbook of Spanish historical linguistics</source> (pp. <fpage>123</fpage>&#8211;<lpage>134</lpage>). <publisher-name>Routledge</publisher-name>.</mixed-citation></ref>
<ref id="B126"><mixed-citation publication-type="journal"><string-name><surname>Van Olmen</surname>, <given-names>D.</given-names></string-name> (<year>2024</year>). <article-title>Are asymmetries in imperative negation based in usage?</article-title> <source>Linguistic Typology at the Crossroads</source>, <volume>4</volume>(<issue>2</issue>), <fpage>158</fpage>&#8211;<lpage>219</lpage>. <pub-id pub-id-type="doi">10.6092/issn.2785-0943/19446</pub-id></mixed-citation></ref>
<ref id="B127"><mixed-citation publication-type="journal"><string-name><surname>Ver&#237;ssimo</surname>, <given-names>J.</given-names></string-name>, &amp; <string-name><surname>Clahsen</surname>, <given-names>H.</given-names></string-name> (<year>2009</year>). <article-title>Morphological priming by itself: A study of Portuguese conjugations</article-title>. <source>Cognition</source>, <volume>112</volume>(<issue>1</issue>), <fpage>187</fpage>&#8211;<lpage>194</lpage>. <pub-id pub-id-type="doi">10.1016/j.cognition.2009.04.003</pub-id></mixed-citation></ref>
<ref id="B128"><mixed-citation publication-type="book"><string-name><surname>Vincent</surname>, <given-names>N.</given-names></string-name> (<year>1995</year>). <chapter-title>Exaptation and grammaticalization</chapter-title>. In <string-name><given-names>H.</given-names> <surname>Andersen</surname></string-name> (Ed.), <source>Historical linguistics 1993</source> (Vol. <volume>124</volume>, pp. <fpage>433</fpage>&#8211;<lpage>446</lpage>). <publisher-name>John Benjamins</publisher-name>. <pub-id pub-id-type="doi">10.1075/cilt.124.34vin</pub-id></mixed-citation></ref>
<ref id="B129"><mixed-citation publication-type="webpage"><string-name><surname>Watts</surname>, <given-names>S.</given-names></string-name> (<year>2000</year>). <article-title>Teaching talk: Should students learn &#8216;real German&#8217;?</article-title>. <source>German as a Foreign Language</source>, <volume>1</volume>, <fpage>64</fpage>&#8211;<lpage>82</lpage>. <uri>http://www.gfl-journal.de/Issue_1_2000.php</uri></mixed-citation></ref>
<ref id="B130"><mixed-citation publication-type="webpage"><string-name><surname>Weinreich</surname>, <given-names>U.</given-names></string-name>, <string-name><surname>Labov</surname>, <given-names>W.</given-names></string-name>, &amp; <string-name><surname>Herzog</surname>, <given-names>M.</given-names></string-name> (<year>1968</year>). <chapter-title>Empirical foundations for a theory of language change</chapter-title>. In <string-name><given-names>W.</given-names> <surname>Lehmann</surname></string-name> &amp; <string-name><given-names>Y.</given-names> <surname>Malkiel</surname></string-name> (Eds.), <source>Directions for historical linguistics</source> (pp. <fpage>95</fpage>&#8211;<lpage>195</lpage>). <publisher-name>University of Texas Press</publisher-name>. <uri>https://books.google.de/books?id=Wr1CAAAAIAAJ</uri></mixed-citation></ref>
<ref id="B131"><mixed-citation publication-type="book"><string-name><surname>Werth</surname>, <given-names>A.</given-names></string-name>, <string-name><surname>B&#252;low</surname>, <given-names>L.</given-names></string-name>, <string-name><surname>Pfenninger</surname>, <given-names>S. E.</given-names></string-name>, &amp; <string-name><surname>Schiegg</surname>, <given-names>M.</given-names></string-name> (<year>2021</year>). <source>Intra-individual variation in language</source>. <publisher-name>De Gruyter Mouton</publisher-name>. <pub-id pub-id-type="doi">10.1515/9783110743036</pub-id></mixed-citation></ref>
<ref id="B132"><mixed-citation publication-type="journal"><string-name><surname>Wolfram</surname>, <given-names>W.</given-names></string-name>, &amp; <string-name><surname>Beckett</surname>, <given-names>D.</given-names></string-name> (<year>2000</year>). <article-title>The role of the individual and group in earlier African American English</article-title>. <source>American Speech</source>, <volume>75</volume>(<issue>1</issue>), <fpage>3</fpage>&#8211;<lpage>33</lpage>. <pub-id pub-id-type="doi">10.1215/00031283-75-1-3</pub-id></mixed-citation></ref>
</ref-list>
</back>
</article>