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Ce travail porte sur l’inscription de la notion extralinguistique de mouvement dans deux langues typologiquement différentes, et examine l’impact de ces différences sur les premiers développements langagiers. Les travaux récents sur la question montrent en effet qu’il existe des contraintes proprement linguistiques, en plus de contraintes générales liées à l’empreinte particulière qu’apporte la perception de l’espace et du mouvement à la cognition. Notre objectif est d’analyser la place de ces contraintes dans l’acquisition du langage, à partir de suivis longitudinaux d’enfants francophones et anglophones filmés dès les débuts du langage. Nous présentons d’abord plusieurs illustrations des hypothèses sur la précocité du mouvement, repérées dans les premières formes de communication : celles-ci dessinent des liens très précoces entre mouvement et langage, qui ne semblent pas dépendre de la langue adressée à l’enfant. Nous nous penchons ensuite sur l’impact des contraintes proprement linguistiques, que l’expression du déplacement fait apparaître. L’analyse du discours adressé à l’enfant permet de souligner l’importance des contextes de production, et de variations reflétant des choix énonciatifs différents : leur prise en compte atténue les différences inter-langues observées dans la littérature. Cependant, des contrastes plus marqués apparaissent dans les premières expressions du déplacement : ils montrent une prise en compte précoce des contraintes linguistiques. L’analyse de l’expression du déplacement en français révèle aussi une focalisation peut-être excessive de la typologie sémantique sur les valeurs spatiales. Pour montrer que la prise en compte des valeurs non spatiales importe y compris pour l’analyse de l’anglais, nous interrogeons l’articulation des valeurs spatiales et non spatiales dans l’acquisition des premières constructions, à partir d’un des premiers marqueurs utilisés par les enfants anglophones : up. / This dissertation starts from the expression of motion (an extralinguistic notion) in two typologically different languages, and analyses the impact of those differences in early language acquisition. Recent studies have highlighted the importance of linguistic constraints, in addition to general constraints linking our perception of space and motion with general cognitive processes. Our aim is to situate those constraints within a general understanding of first language acquisition: this will be achieved through analyses of longitudinal follow-ups of French and English-speaking children from early communication onwards. We start by isolating and discussing some features of early communication in which the primacy of motion is best illustrated. They are evidence for the existence of early links between motion and language, which do not seem to depend on the characteristics of the language acquired. We then examine the impact of linguistic constraints, as they appear in the expression of location changes. Child-directed speech shows important variations in context, but also in each speaker’s linguistic choices and strategies: cross-linguistic differences thus need to be reconsidered. However, more marked contrasts are seen in how children first express location changes: they are evidence for an early integration of linguistic constraints. Our analyses also underline the overrated status of spatial semantics in typology and cross-linguistic comparisons. In order to show that non spatial meaning matters, we finally question how both spatial and non-spatial semantics are implied in the acquisition of syntactic constructions with one of the first markers used by English-speaking children: up.

This study examines the production and perception of laryngeal constriction in the early vocalizations of Bai and English infants. The first part of the study documents the development of laryngeal voice quality features in the non-syllabic and syllabic utterances of Bai and English infants. The second part of the study focuses on the perception of laryngeal constriction in infant vocalizations by adult Bai and English listeners. The study is grounded in Esling’s (2005) model of the vocal tract, which characterizes the laryngeal vocal tract as a separate articulator, distinct from the oral vocal tract. The study of Bai and English infants’ production identifies universal and language-specific patterns in infants’ development of laryngeal constriction. In the first months of life, most sounds produced by Bai and English infants are constricted. As the year progresses, all infants explore degrees of constriction in dynamic utterances that feature alternations between constricted and unconstricted laryngeal voice quality settings. As well, throughout the year, infants produce an increasing proportion of unconstricted vocalizations. By the end of the first year, when infants have developed increasing control of the laryngeal and oral vocal tracts, they produce syllabic utterances that begin to reflect the use of laryngeal voice quality features in their ambient language. English syllabic utterances are mostly unconstricted, mirroring the prevalence of unconstricted settings in the target language. By contrast, Bai syllabic utterances are mostly constricted or dynamic, reflecting the use of laryngeal voice quality in Bai, a register tone language that employs laryngeal voice quality features distinctively at the syllabic level. The second part of the study highlights universal and language-particular patterns in Bai and English adults’ perception of laryngeal voice quality in infants’ utterances. In evaluating the importance of a range of infant sounds in learning the target language (Bai or English), adults from both language groups assign lower ratings to infant utterances that occur earlier in development, such as constricted non-syllabic utterances, and higher ratings to sounds that occur later, such as syllabic utterances with rapidly articulated syllables. Bai and English adults’ perceptions also reflect some language-specific patterns that correspond to language-particular characteristics identified in infants’ use of laryngeal voice quality in syllabic and non-syllabic utterances. These correspondences suggest that adults are attuned to laryngeal voice quality in infants, and that, in turn, infants become attuned to the use of laryngeal voice quality features in their ambient language early in development. The production study demonstrates the fruitfulness of Esling’s (2005) model of the vocal tract in revealing previously undocumented patterns in the development of laryngeal constriction in the first year of life and in highlighting the importance of emergent laryngeal control as a stimulator of phonetic development. The perception study shows that adults whose native languages differ markedly in their use of laryngeal constriction can systematically evaluate laryngeal voice quality features in the full range of non-distress vocalizations produced by infants in the first year of life.

In this study, young children’s development of speech acts was examined. Interaction between six Swedish-speaking parents and their children was observed. The frequency, form and distribution of speech acts in the output from the parents were compared with the frequency, form and distribution of the children’s speech acts. The frequency was measured by occurrences per analysed session. The aim of the analysis was to examine if the parent’s behaviour could be treated as a baseline for the child’s development. Both the parents’ and the children’s illocutionary speech acts were classified. Each parent-child dyad was observed at four different occasions, when the children were 1;0, 1;6, 2;0, and 2;6 years of age. Similar studies have previously shown that parents keep a consistent frequency of speech acts within a given time span of interaction, though the distribution of different types of speech acts may shift, depending on contextual factors. The form, in terms of Mean Length of Speech Act in Words (MLSAw), were correlated with the longitudinal result of the children’s MLSAw. The distribution of the parents’ speech acts showed extensive individual differences. The result showed that the children’s MLSAw move significantly closer the MLSAw of their parents. Since the parent’s MLSAw showed a wide distribution, these results indicate that the parent’s speech acts can be treated as a baseline for certain aspects of the children’s development, though further studies are needed.

The aim of this study is to investigate crosslinguistic influence in the Arabic language of Iraqi Arabic-Swedish bilingual children (5-7) who live in Sweden. The scope is to study lexical, morphological and syntactic uses in the children’s speech that do not belong to the Iraqi Arabic variety (IAV). The used research method was interview method that has been applied in a descriptive framework without any normative evaluations. The interviews were based on a series of narrative pictures that had already been designed for the Multilingual Assessment Instrument for Narratives (MAIN). The primary material is a corpus which totals 164 recorded minutes that were obtained from twelve Iraqi Arabic-Swedish bilingual children who are 5-7 years old. The secondary material was sociolinguistic background information that was obtained from the children’s parents by using a questionnaire. The results revealed the following main points: (1) Most of the children’s linguistic uses that did not belong to IAV occurred mainly on the lexical level, less on the morphological level and least on the syntactic level. (2) Not all linguistic uses that do not belong to the IAV indicate a crosslinguistic influence in the children’s language development, because some of these uses occur occasionally. (3) Many linguistic uses that do not belong to the IAV were related to Modern standard Arabic (MSA), other Arabic varieties and Swedish, but some of them, e.g. morphological observations, were not related to a specific language. (4) Diglossia and bilingualism have led to different crosslinguistic influences on the children’s speech. Diglossia has led to lexical influence and bilingualism has led to lexical and syntactic influence. (5) The combination of diglossia and bilingualism can increase the crosslinguistic influence on the bilingual children compared to other bilingual children that do not experience this combination of both phenomena. (6) The fact that the children use MSA spontaneously along with their mother tongue shows that they learn MSA before they start school. (7) Use of other Arabic varieties by the children along with their mother tongue can bring these different Arabic varieties closer to the IAV and may also create a mixed variety in the future, if there is continuous and intensive language contact. (8) The results indicate the possible types of language acquisition for all children’s languages/varieties but without normative evaluation as the following: IAV as L1 (first language/mother tongue), Swedish as L1 or ESLA (early second language acquisition), MSA as ESLA or L2, and other Arabic varieties as ESLA or L2.

Le langage non-littéral (expressions idiomatiques, métaphores, métonymies, etc.) se révèle être très présent dans nos conversations de la vie de tous les jours. Contrairement à ce que l’on pourrait penser, l’utilisation du langage figuré ne revêt pas exclusivement une fonction ornementale : au contraire, la linguistique cognitive a montré que le langage non-littéral est le reflet d’un certain nombre de concepts que nous abordons de manière métaphorique (Gibbs, 1995 ; Gibbs et Tendhal, 2006 ; Lakoff et Johnson, 1980 ; et Sperber et Wilson, 1986/1995). En lien avec cet ancrage théorique, un certain nombre de chercheurs se sont intéressés au domaine de l’apprentissage et de l’enseignement des langues secondes. Ils ont proposé des stratégies d’enseignement afin de garantir un apprentissage de la langue le plus complet possible et ont surtout étudié les compétences non-littérales des apprenants en réception (Andreou et al., 2009 ; Boers, 2000 ; Boers et Lindstromberg, 2009; Cooper, 1998 et 1999 ; Komur et Cimen, 2009 ; Kosciuk, 2003 ; et Lennon, 1998). En revanche, très peu de didacticiens se sont interrogés sur les capacités des apprenants à produire du non-littéral dans une langue étrangère à l’exception de Littlemore et al. (2014), MacArthur (2010) et Nacey (2013). Afin de corroborer le travail de ces chercheuses, ce travail de thèse s’intéresse au développement du langage figuratif chez des apprenants de langue seconde tout en proposant une comparaison avec son acquisition en langue maternelle. Dans le but d’avoir une première idée de la façon dont ces deux types de sujets manient le non-littéral, j’analyse tout d’abord le discours d’une petite fille de nationalité anglaise filmée à intervalles réguliers entre l’âge d’un an et quatre ans, puis j’examine les productions écrites en anglais d’apprenants francophones. J’observe ensuite les productions non-littérales d’enfants natifs anglophones âgés de 7, 11 et 15 ans, d’apprenants francophones en classe de seconde, première année de licence d’anglais et deuxième année de master d’anglais, et enfin, d’un groupe contrôle d’adultes anglophones en interactions semi-guidées. Les résultats de ces différentes analyses révèlent de nombreux points communs entre les productions figuratives des enfants natifs anglophones et des apprenants francophones. La principale différence entre ces sujets se situe au niveau de la proportion de formes figuratives produites (croissante chez les enfants, mais constante chez les apprenants), de la proportion de formes figuratives conventionnelles produites (croissante chez les apprenants, mais constante chez les enfants) et de la forte proportion de formes déviantes chez les apprenants. Ces formes proviennent principalement d’une carence en ressources lexicales de la langue étrangère et d’expressions figuratives du français que les apprenants ont souhaité transposer en anglais. Cette thèse propose un ensemble d’implications pédagogiques pour la classe de langue dans le but de remédier à ces difficultés. / Research has shown that non-literalness is pervasive in language and that it is not always an ornamental device (e.g. to invest time in something, to be in love, the leg of a table, etc.). Metaphor permeates our way of thinking (Gibbs, 1995; Gibbs and Tendahl, 2006; Lakoff and Johnson, 1980) and serves a wide variety of discursive functions (Cameron, 2003; Charteris-Black, 2004; Müller, 2008; Steen, 2008, 2011, 2013). In the light of these findings, I propose to examine non-literal language from a second language acquisition perspective, as we know that language learners struggle to develop a successful command of the conceptual and figurative system of their L2 (Andreou and Galantomos, 2009; Irujo, 1986; Cooper, 1999; Danesi, 1992, 1995). Besides, even if recent studies have started to document L2 metaphorical performance (Littlemore et al., 2014; McArthur, 2010; Nacey 2009 and 2013), little is known about the way it actually develops across learning stages. As an attempt to bridge this gap, I propose a comparative study of figurative language development in first and second language acquisition. To get a preliminary picture of the use of non-literal language by native English-speaking children and French learners of English, I analyse the discourse of a young English child aged 1 to 4 using the Forrester Corpus available on the CHILDES database (MacWhinney, 2000), and I investigate essays written by French university students majoring in Arts and learning English as a second language. Then, I propose an L1/L2 comparative study where I analyze semi-guided interactions taking place between native English-speaking children (aged 7, 11 and 15), French learners of English (in their first year of high school, first year of B.A. in English studies and last year of M.A. in English studies), as well as native English-speaking adults. The results of this PhD project revealed many similar aspects in the figurative productions of native English-speaking children and French students. One of the main differences between the two groups is related to the amount of figurative forms produced, which increases across ages in children’s discourse while remaining constant in learners’ discourse. Another important difference is the amount of conventional figurative forms produced; they increase across learning stages in the learner’s production but remain constant in the children’s. Lastly, I observed a large amount of deviant figurative forms in the leaner’s productions, mainly resulting from L1 transfers and lexical overextensions. Taking into account these observations, implications for teaching are presented.

This case study investigates the acquisition of Russian in a language contact situation. It examines a simultaneous Swedish-Russian bilingual child born and raised in Sweden. Qualitative analysis is provided from age 1;4 to 8;5 focusing especially on the earliest stages (before the end of the critical period at 4;5). The aim was to investigate (a) whether the child reaches the same milestones as monolingual children, (b) whether there is evidence that two separate linguistic systems have been developed, (c) whether the child’s grammatical competence in both languages might be qualitatively different from that of monolingual children and (d) whether there is interaction between the languages. The hypothesis tested is that ample input is needed to construct and develop two linguistic systems on a native-speaker level. The main result is that the two linguistic systems do not develop independently from each other; rather, 2L1s develop in permanent interaction where the weaker language – Russian – happens to be influenced by the stronger one – Swedish. The bilingual environment per se might lead to decreased structural complexity in the weaker language. Language dominance is viewed as a major determiner of cross-linguistic effects. This could lead to the development of a new individual variety of Russian (outside Russia).   The results confirm the hypothesis that, even though there was exposure to both languages from birth onwards, the amount of input in the weaker and grammatically more complex language (Russian) received before the cri­tical period was not enough to completely develop full native command of it. The lack of input has an impact on the acquisition of morphology: some morphological categories may have been set randomly or not at all. The structures observed are more ty­pical of L2 than L1 ac­quisition. Morphology may be considered a vulnerable domain since complex mor­phological rules in Russian cannot develop with­out ample input.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / A presente investigação se volta para a expressão de objeto direto anafórico (ODA) na produção de dados espontâneos de aquisição bilíngue simultânea (BFLA Bilingual First Language Acquisition) de Português Brasileiro (PB) e de inglês. A literatura em BFLA tem assumido que as duas línguas são adquiridas de maneira independente (DE HOUWER, 1990, 2005; PARADIS; GENESEE, 1996), porém indica que pode haver momentos de interação entre os dois sistemas linguísticos, resultando em transferência entre propriedades paramétricas das línguas (HULK; MÜLLER, 2000; MÜLLER; HULK, 2001; PÉREZ-LEROUX, et al 2009 ; STRIK; PÉREZ-LEROUX, 2011; SORACE, 2011). Essa investigação é conduzida com base na teoria de Princípios & Parâmetros (CHOMSKY, 1981) do Gerativismo, reformulada com o Programa Minimalista (CHOMSKY, 1995). PB e inglês se diferenciam em relação à marcação paramétrica para ODA: o PB admite objeto nulo anafórico (ON) e o inglês não. A hipótese de trabalho adotada é de que haverá transferência do PB para o inglês. Dois tipos de categorias nulas são observados: objetos nulos dêitico (Odeit) e anafórico (ON). Assume-se que a manifestação do primeiro tipo indica um estágio default universal, que constituiria uma estratégia facilitadora (RIZZI, 2005). A possibilidade de uso de ONs agramaticais no inglês é concebida como resultado da presença de dados ambíguos, que reforçariam essa possibilidade equivocadamente no inglês, em consonância com o defendido em Hulk & Müller (2000) e Müller & Hulk (2001). Assume-se, ademais, que as restrições semânticas que regem a distribuição das formas possíveis para ODA no PB (CYRINO, 2006; LOPES, 2009) só poderiam ser detectadas em uma faixa etária mais alta. São analisados dados espontâneos de três bilíngues simultâneos (N, L e A) em interação com seus pais. N foi acompanhado dos 2;1,18 aos 3;8,24 anos de idade, enquanto L foi acompanhada dos 2;5,30 aos 3;1,1 anos e A foi acompanhado dos 3;2,6 aos 3;8,26 anos. As manifestações de ODA foram identificadas e classificadas em DP, pronome, ON e ODeit. Comparando os bilíngues, constatou-se que cada criança parece estar em um momento de aquisição: N apresenta instâncias de ODeit em contextos imperativos e pronomes aparecem apenas no inglês aos 2;5,2 anos. L tem preferência por DPs nas duas línguas e usa pronomes apenas na língua inglesa. Aos 2;6,22 anos, surgem instâncias de ON com mais frequência no PB, mas também no inglês. A criança A apresenta todos os tipos de preenchimento de ODA e ONs aparecem nas duas línguas. Os dados indicam que ONs agramaticais estão presentes no inglês, sugerindo que há transferência do PB para o inglês / This research focuses on the expression of the anaphoric direct object (ADO) in Bilingual First Language Acquisition (BFLA) of Brazilian Portuguese (BP) and English. It has been assumed in the BFLA literature that the two languages are acquired independently in BFLA context (DE HOUWER, 1990, 2005; PARADIS; GENESEE, 1996). However studies also indicate that there may be moments in the course of the bilingual acquisition in which both languages interact resulting in parameter transfering (HULK; MÜLLER, 2000; MÜLLER; HULK, 2001; PÉREZ-LEROUX, et al 2009 ; STRIK; PÉREZ-LEROUX, 2011; SORACE, 2011). The framework adopted is the Generative Theory, particularly, the Principle & Parameter Theory (CHOMSKY, 1981) reformulated within the Minimalist Program (CHOMSKY, 1995). BP and English set different parameters for ADO: BP allows for null objects whereas English does not. The hypothesis is that there will be transfer from BP to English. Two types of null categories are observed: deictic object (Odeit) and anaphoric object (NO). We assume that the expression of the first type of null category indicates a universal default stage which would configurate a facilitation strategy (RIZZI, 2005). The possibility of use of ungrammatical NOs in English is conceived as a result of ambiguous data, which wrongly reinforce the possibility of NOs in English, in accordance with Hulk & Müller (2000) and Müller & Hulk (2001). We claim that the semantic restrictions which govern the expression of ADO in BP (CYRINO, 2006; LOPES, 2009) could only be detected with older bilinguals. The spontaneous data of three simultaneous bilinguals (N,L and A) in interaction with their parents are analyzed. N was observed from 2;1,18 to 3;8,24 years old, L was observed from 2;5,30 to 3;1,1 years old and A,from 3;2,6 to 3;8,26 anos. The forms used for the expression of ADO were identified and classified into DP, pronoun, NO and ODeit. Comparing the three bilinguals, we verified that each child seems to be in a particular moment of acquisition: N presents instances of Odeit in imperative contexts and pronouns appear only in English at 2;5,2. L shows preference for DPs in both languages and pronouns pop up only in English. At 2;6,22 years old, instances of NO appear in BP, but also in English. The bilingual A presents all types of expression of ADO and NOs appear in both languages. The data indicates that ungrammatical NOs are present in English suggesting transfer from BP to English

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / A presente investigação se volta para a expressão de objeto direto anafórico (ODA) na produção de dados espontâneos de aquisição bilíngue simultânea (BFLA Bilingual First Language Acquisition) de Português Brasileiro (PB) e de inglês. A literatura em BFLA tem assumido que as duas línguas são adquiridas de maneira independente (DE HOUWER, 1990, 2005; PARADIS; GENESEE, 1996), porém indica que pode haver momentos de interação entre os dois sistemas linguísticos, resultando em transferência entre propriedades paramétricas das línguas (HULK; MÜLLER, 2000; MÜLLER; HULK, 2001; PÉREZ-LEROUX, et al 2009 ; STRIK; PÉREZ-LEROUX, 2011; SORACE, 2011). Essa investigação é conduzida com base na teoria de Princípios & Parâmetros (CHOMSKY, 1981) do Gerativismo, reformulada com o Programa Minimalista (CHOMSKY, 1995). PB e inglês se diferenciam em relação à marcação paramétrica para ODA: o PB admite objeto nulo anafórico (ON) e o inglês não. A hipótese de trabalho adotada é de que haverá transferência do PB para o inglês. Dois tipos de categorias nulas são observados: objetos nulos dêitico (Odeit) e anafórico (ON). Assume-se que a manifestação do primeiro tipo indica um estágio default universal, que constituiria uma estratégia facilitadora (RIZZI, 2005). A possibilidade de uso de ONs agramaticais no inglês é concebida como resultado da presença de dados ambíguos, que reforçariam essa possibilidade equivocadamente no inglês, em consonância com o defendido em Hulk & Müller (2000) e Müller & Hulk (2001). Assume-se, ademais, que as restrições semânticas que regem a distribuição das formas possíveis para ODA no PB (CYRINO, 2006; LOPES, 2009) só poderiam ser detectadas em uma faixa etária mais alta. São analisados dados espontâneos de três bilíngues simultâneos (N, L e A) em interação com seus pais. N foi acompanhado dos 2;1,18 aos 3;8,24 anos de idade, enquanto L foi acompanhada dos 2;5,30 aos 3;1,1 anos e A foi acompanhado dos 3;2,6 aos 3;8,26 anos. As manifestações de ODA foram identificadas e classificadas em DP, pronome, ON e ODeit. Comparando os bilíngues, constatou-se que cada criança parece estar em um momento de aquisição: N apresenta instâncias de ODeit em contextos imperativos e pronomes aparecem apenas no inglês aos 2;5,2 anos. L tem preferência por DPs nas duas línguas e usa pronomes apenas na língua inglesa. Aos 2;6,22 anos, surgem instâncias de ON com mais frequência no PB, mas também no inglês. A criança A apresenta todos os tipos de preenchimento de ODA e ONs aparecem nas duas línguas. Os dados indicam que ONs agramaticais estão presentes no inglês, sugerindo que há transferência do PB para o inglês / This research focuses on the expression of the anaphoric direct object (ADO) in Bilingual First Language Acquisition (BFLA) of Brazilian Portuguese (BP) and English. It has been assumed in the BFLA literature that the two languages are acquired independently in BFLA context (DE HOUWER, 1990, 2005; PARADIS; GENESEE, 1996). However studies also indicate that there may be moments in the course of the bilingual acquisition in which both languages interact resulting in parameter transfering (HULK; MÜLLER, 2000; MÜLLER; HULK, 2001; PÉREZ-LEROUX, et al 2009 ; STRIK; PÉREZ-LEROUX, 2011; SORACE, 2011). The framework adopted is the Generative Theory, particularly, the Principle & Parameter Theory (CHOMSKY, 1981) reformulated within the Minimalist Program (CHOMSKY, 1995). BP and English set different parameters for ADO: BP allows for null objects whereas English does not. The hypothesis is that there will be transfer from BP to English. Two types of null categories are observed: deictic object (Odeit) and anaphoric object (NO). We assume that the expression of the first type of null category indicates a universal default stage which would configurate a facilitation strategy (RIZZI, 2005). The possibility of use of ungrammatical NOs in English is conceived as a result of ambiguous data, which wrongly reinforce the possibility of NOs in English, in accordance with Hulk & Müller (2000) and Müller & Hulk (2001). We claim that the semantic restrictions which govern the expression of ADO in BP (CYRINO, 2006; LOPES, 2009) could only be detected with older bilinguals. The spontaneous data of three simultaneous bilinguals (N,L and A) in interaction with their parents are analyzed. N was observed from 2;1,18 to 3;8,24 years old, L was observed from 2;5,30 to 3;1,1 years old and A,from 3;2,6 to 3;8,26 anos. The forms used for the expression of ADO were identified and classified into DP, pronoun, NO and ODeit. Comparing the three bilinguals, we verified that each child seems to be in a particular moment of acquisition: N presents instances of Odeit in imperative contexts and pronouns appear only in English at 2;5,2. L shows preference for DPs in both languages and pronouns pop up only in English. At 2;6,22 years old, instances of NO appear in BP, but also in English. The bilingual A presents all types of expression of ADO and NOs appear in both languages. The data indicates that ungrammatical NOs are present in English suggesting transfer from BP to English

This thesis focuses on Chinese–Swedish code-switching of bilingual children in Sweden. The purpose is to, through a case study, study what Chinese–Swedish code-switching looks like in daily conversations between bilingual children and their parents. Three main questions are formulated from the purpose of the thesis, foucusing on the types and frequencies of code-switching, the grammar of code-switching, and the motivation of code-switching. The linguistic material comes from voice recordings of naturally occurring conversations between three children and their parents, which are transcribed afterwards. In order to answer the questions, two different kinds of analyses are carried out: a quantitative analysis, to study the types and frequencies of code-switching, and a qualitative analysis, to study the grammar and motivation of code-switching. The qualitative analysis includes a grammatical analysis and a conversation analysis. The results of the analyses show that the types and frequencies of code-switching vary between different children, due to the interplay of three factors, namely the children’s language competence, the parents’ language patterns and the status of Swedish as the primary language in the society. In intra-sentential code-switching, when both languages have the same word order, constituents in different languages follow the corresponding grammar; and when code-switching occurs at places where there are different word orders in the two languages, the speaker has to choose and follow one of the grammars. The conversation analysis shows that code-switching is used as an extra and exclusive resource for bilingual speakers at turn distribution, marking preference and initiating repair.