Dissertations / Theses on the topic 'Psycholinguistic model'

The research literature is replete with relatively small scale studies investigating various theories of reading. This research is often exploratory rather than confirmatory in nature. To avoid such limitations, samples from a large data base were used to examine causal models based on the Goodman theory of reading and the concepts of process and product comprehension. Two separate causal models were created using the following variables: graphic similarity, sound similarity, acceptability with prior text, acceptability with following text, acceptability or correction, the retelling score for the text read, the Comprehensive Tests of Basic Skills Vocabulary and Comprehension scores, and the Degrees of Reading Power (DRP) scores. The sample for one model consisted of 448 Grade Two to Grade Five students enrolled in a Chapter I program in the southwestern United States. The sample for the second model consisted of only the Grade Four and Grade Five students from the larger sample since DRP scores were not available for other students. In the hypothesized models graphic and sound similarity, and acceptability with prior and following were posited to load on a latent factor representing the unitary dimension of reading which in turn was posited to be causally related to process and product variables. Process variables included the acceptable or corrected score (RMI comprehending score) and the DRP score. Product variables included the CTBS scores and the retelling score. Product variables were posited to be dependent upon process variables. Analysis was conducted using the LISREL program. For both models causal pathways were dropped between process and product comprehension variables but were retained between the latent variables of reading and process and product comprehension. In addition, the DRP score loaded on product comprehension more than on process comprehension while retelling loaded more on process comprehension than product comprehension. Variables relating to the Goodman theory appeared to be more interrelated than those external to the theory. Implications for the uses of causal modeling and the constructs of process and product comprehension are discussed.

This dissertation proposes a formal model of phonological performance, Double Lookup, that also has empirical consequences for theories of phonological competence. The most significant of these is the Productivity Hypothesis, the claim that the ordering of rules derives from their relative productivity. According to Double Lookup, the use of phonological knowledge during speech production occurs in two steps. First, forms are retrieved from memory; second, phonological rules are retrieved from memory and applied, if appropriate, to the retrieved forms. Phonological patterns may be applied during speech in this way or be prepatterned (stored as patterns across lexical items in memory). The productivity of a rule is defined to be the likelihood of its being retrieved and applied during speech production. In general, less productive rules are more likely to be prepatterned than more productive rules. The Productivity Hypothesis then follows: Because prepatterned forms are retrieved before rules are retrieved and applied, less productive rules will be ordered before more productive rules. Double Lookup and the Productivity Hypothesis are tested in several ways. First it is shown that the ordering of partially productive rules in English, as determined using standard linguistic methods, corresponds with their ranking in productivity, as determined through experiments described in the literature and through original surveys of speech errors. The application of fully productive rules in English is also shown to be consistent with the Productivity Hypothesis; fully productive rules do not apply in a linear sequence, but rather interact in accordance with universal principles. All apparent counterexamples actually involve less than fully productive rules. Next it is shown that the phenomenon referred to in the literature as cyclicity is correctly predicted to arise under certain well-defined circumstances, as when a rule is both prepatterned and very productive. In addition, it is shown that there are large categories of examples that cannot be handled by the notion of cyclicity at all, but find a simple account within Double Lookup. Finally, evidence for the model is summarized by comparing it with other models of rule ordering which face conceptual and empirical problems Double Lookup avoids.

Two ways of representing the spatial arrangement of letters in letter-strings are distinguished. In part-whole representations, the relationship of a letter to the letter-string as a whole is encoded. In part-part representations, the relationships of a letter to other letters in the string are encoded. Computational models of word perception typically use the former, but part-part representations are a very general feature of some neurocomputational models. Experiments ·are reported that examine for nonword and word wholes the representations used to encode their constituent parts; the first five experiments use measures of facilitation to infer encoding type, the next three primarily use error measures. Experiment 1 shows that when a part of a recently learned letter-string is maintained in a briefly-presented test string, the test string is more accurately reported, showing perceptual transfer of training. No significant difference in the amount of transfer is found between maintaining the part in the same position (fixed-part) in the string and maintaining the part in a different position (moved-part) in the string. It is argued that this confirms part-part theories because transfer was obtained when only inter-letter relationships are maintained. Experiment 1 simulated on two implementations of part-whole theories shows that they fail to produce the obtained pattern of performance. This indicates that part-whole relational encoding is not a major part of the representations mediating these transfer effects. Experiment 2 replicates the fixed-part transfer and shows that it is restricted to parts made of adjacent letters. Experiments 3 and 4 use a prototype-extraction paradigm to show that novel parts made of adjacent letters are easier to learn than parts made of non-adjacent letters. Experiment 5 eplicates the moved-part transfer and shows that it is restricted to parts made of adjacent letters. These results show that the major inter-letter relationships encoded are between neighbouring letters. These first five results are taken as showing that pre-processing of the image to provide position-in-the-string information is not important for the representations that produce transfer. It is suggested that modelling the input to the graphemic input lexicon as the Primal Sketch of the image is more appropriate. In particular, realistic early vision algorithms such as MIRAGE appear to be potentially capable of modelling the results obtained. Experiment 6 shows that reports of letters in nonwords have gradients of positional accuracy, with most positional errors occurring close to the correct position. Experiment 7 finds that migrations into the report of the second of two briefly-presented nonwords from the first nonword do not always maintain position though many do. Experiment 8 involved the presentation of mis-spelled words preceded by non words that either encouraged the detection of the mis-spelling or its lexicalisation. Lexicalisation responses involve the migration of a letter from the preceding string. These occur when primed by the lexicalisation letter in the same, but not in moved, positions in the first string, but only when presented in the context of neighbouring letters. Detection of mis-spelling shows both facilitation and inhibition. Facilitation is obtained with the part in moved positions in the source string but not in the same position, in which case inhibition is found. Facilitation is also obtained by prior presentation of the misspelled word or prior presentation of the correctly spelled word. These results are interpreted as showing that facilitation is obtained when the facilitating part of the preceding string either fully or minimally activates a representation of the word mis-spelled on second presentation. Partial activation of the word produces inhibition. The results suggest that part-whole encoding is used for letters in familiar wholes, while part-part encoding is used for letters in unfamiliar wholes. This conclusion is used to motivate a model of the organisation and access of graphemic representations in which the ~ "» -. concept of scale plays an important role. The model is extended to other tasks involving visually presented words and nonwords and a brief account of the major findings attempted. Finally some extensions of the model to the domain of object perception are outlined.

Contrary to common folk and expert theory, the human self is not unitary. There is no Cartesian theatre or homunculus functioning as a metaphorical overlord. Rather, it is an abstractum gleaned from a person�s experiences-a centre of narrative gravity (Dennett 1991). Experiences are a person�s cognisance of her ventures in life from a particular unique perspective. In perspectivising her experiences, the person imputes a certain structure, order, and significance to them. Events are seen as unfolding in a certain inherently and internally coherent way characterised by causality, temporality, or intentionality, etc. In other words, a person�s self emerges out of her innumerable narrativisations of experience, as well as the different protagonist roles she plays in them. Her behaviours in different situations can be understood as different life-narratives being foregrounded, when she is faced with different stimuli different experiences/events present. In real life, self-reflective discourse frequently alludes to a divided, partitive self, and the experiences/behaviours that it can engage in. In academic study, this concept of the divided and narrative-constructivist self is well-represented in disciplines ranging from philosophy (e.g., Dennett 1991, 2005), developmental psychology (e.g., Markus & Nurius 1986; Bruner 1990, 2001; Stern 1994), cognitive psychology (e.g., Hermans & Kempen 1993; Hermans 2002), neuropsychology (e.g. Damasio 1999), psychiatry (e.g., Feinberg 2001), to linguistics (e.g., McNeil 1996; Ochs & Capps 1996; Nair 2003). Depending on the particular theory, however, emphasis is often placed either on its divided or its narrative-constructivist nature. This thesis argues, however, that the two are coexistent and interdependent, and both are essential to the self�s ontology. Its objectives are therefore: (i) to propose a partitioned-narrative model of the self which unifies the two perspectives by positing that the partitioned-representational (Dinsmore 1991) nature of narratives entails the partitioned structure of the self; and (ii) to propose that the partitioned-narrative ontology of the self is what enables and motivates much of our self-reflective discourse and the grammatical resources for constructing that discourse. Partitioning guarantees that a part of the self, i.e., one of its narratives, can be selectively attended to, foregrounded, objectified, and hence talked about. Narrativity provides the contextual guidance and constraints for meaning-construction in such discourse. This claim is substantiated with three application cases: the use of anaphoric reflexives (I found myself smiling); various usages of proper names, including eponyms (the Shakespeare of architecture), eponymic denominal adjectives (a Herculean effort), etc.; and partitive-self constructions which explicitly profile partitioned and selectively focal narratives (That�s his hormones talking). When analysed using the proposed model, these apparently disparate behaviours turn out to share a common basis: the partitioned-narrative self.

The purpose of this research is to further investigate the ongoing debate between the Dual Mechanism Model and the Connectionist Model of language processing by investigating how knowledge of second language (L2) inflectional morphology is represented and processed by learners of English. Specifically, do second language learners of English use the same Dual Mechanism Model that Prasada and Pinker (1993) have argued is a universally applicable model, or does the Connectionist Model of language processing better explain L2 learning and language processing?<br>The participants in this study were students in a Montreal area CEGEP. The instrument used to gather data was the Prasada and Pinker pseudo-verb list, with modifications suggested by Lee (1994) to create a revised list. Participants were asked to create past tense forms of pseudo verbs. In addition to this task, four participants were asked to do a simultaneous verbal think aloud, orally explaining their responses to the stimulus presented in the study.<br>The results of the studies indicate that English second language learners used both a rule based mechanism and an associative mechanism in the formation of both regular and irregular English verbs. This result provides support for the claims of the Connectionist model of past tense formation of English verbs, but also supports some of the claims of the Dual Mechanism Model. There are possible implications for the teaching and learning of English as a Second Language (ESL). This study also raises further research questions involving rule vs. associative learning in the teaching and learning of language. (Abstract shortened by UMI.)

Bilingual language control refers to how bilinguals are able to speak exclusively in one language without the unintended language intruding. Two prominent verbal theories of bilingual language control have been proposed by researchers: the inhibitory control model (ICM) and the lexical selection mechanism model (LSM). The ICM posits that domain-general inhibition is employed in order to suppress the unintended language’s activation. The LSM posits that inhibition is not used; rather a lexical selection mechanism targets only the intended language’s words. In order to better test the theories’ hypotheses, I developed computational models to estimate participants’ reaction times when naming in blocks of semantically related pictures and in blocks of semantically unrelated pictures. For these tasks, the ICM model predicts that semantic interference will be abolished when bilinguals switch languages, while the LSM model does not. In Experiment One, English-Spanish bilinguals named pictures that were either semantically related to the previous four trials, or semantically unrelated to the previous four trials. Research indicated that language switching did not abolish priming effects, supporting the ICM. These results contradict conclusions found in previous literature. To reconcile this, another experiment was conducted. It was similar to Experiment One, except filler trials separated semantically related trials. Results showed that each time a semantically related neighbor was presented, naming latency increased by ~10ms regardless of language switching or number of filler items. It suggests that the existing literature mistook incremental learning effects as priming effects, and it demonstrates a need to incorporate theories of incremental learning into theories of bilingual language control.

Cognitive process accounts of the advantages conferred by diagrams in problem solving and reasoning have typically attempted to explain an idealised user or a reasoning system that has equivalent to practised knowledge of the task with the target representation. The thesis investigates the question of how diagrams support users in the process of solving unpractised problems in the domain of probability. The research question is addressed by the design and analysis of an empirical study and cognitive model. The main experiment required participants (N=8) to solve a set of unpractised probability problems presented by combined text and diagram. Think-aloud and eye-movement protocols together with given solutions were used to infer the content and process of problem interpretation, solution interpretation and task execution strategies employed by participants. The data suggested that the diagram was used to facilitate problem solving in three different ways by: (a) supporting sub-problem identification, (b) supporting prior knowledge of diagrammatic sub-schemes used for interpreting a solution and (c) supporting the process of interpreting and testing the specific meaning of given problem instructions and self-generated solution instructions. These empirical data were used to develop cognitive models of canonical strategies of the three identified phenomena: • Sub-problem identification advantages are accounted for by proposing that the spatial semantics of diagrams coupled with competences of the visual-spatial processing system and opportunities for demonstrative interpretation strategies increase the probability of goal-relevant data being made available to central cognition for further processing. • Framing advantages are accounted for by proposing that represented diagrammatic sub-schemes (e.g. part-whole portions, icon-arrays, 2D containers etc.) facilitate access to existing prior knowledge used to frame, derive, and reason about information analogically within that scheme. • Advantages in instruction interpretation are related to the specificity of diagrams which support the opportunity to demonstratively test and evaluate the referential meaning of an instruction. The cognitive model also investigates and evaluates assumptions about the prior knowledge for solving unpractised probability problems; a representational scheme for addressing the co-ordination of sub-goals; a deictic problem representation to support online processing of environmental information, a meta-cognitive processing scheme to address self-argumentation and intention tracking and visual and spatial competences to address the requirements of diagrammatic reasoning. The implications of the cognitive model are discussed with regard to existing accounts of diagrammatic reasoning, probability problem solving (PPS), and unpractised problem solving.

Le présent travail aborde le thème de la complexité sémantique dans le langage naturel, et il propose une hypothèse basée sur certaines caractéristiques des phrases du langage naturel qui déterminent la difficulté pour l'interpretation humaine.Nous visons à introduire un cadre théorique général de la complexité sémantique de la phrase, dans lequel la difficulté d'élaboration est liée à l'interaction entre deux composants: la Mémoire, qui est responsable du rangement des représentations d'événements extraites par des corpus, et l'Unification, qui est responsable de la combinaison de ces unités dans des structures plus complexes. Nous proposons que la complexité sémantique depend de la difficulté de construire une représentation sémantique de l'événement ou de la situation exprimée par une phrase, qui peut être récupérée directement de la mémoire sémantique ou construit dynamiquement en satisfaisant les contraintes contenus dans les constructions.Pour tester nos intuitions, nous avons construit un Distributional Semantic Model pour calculer le coût de composition de l'unification des phrases. Les tests sur des bases de données psycholinguistiques ont révélé que le modèle est capable d'expliquer des phénomènes sémantiques comme la mise à jour context-sensitive des attentes sur les arguments et les métonymies logiques<br>The present work deals with the problem of the semantic complexity in natural language, proposing an hypothesis based on some features of natural language sentences that determine their difficulty for human understanding. We aim at introducing a general framework for semantic complexity, in which the processing difficulty depends on the interaction between two components: a Memory component, which is responsible for the storage of corpus-extracted event representations, and a Unification component, which is responsible for combining the units stored in Memory into more complex structures. We propose that semantic complexity depends on the difficulty of building a semantic representation of the event or the situation conveyed by a sentence, that can be either retrieved directly from the semantic memory or built dynamically by solving the constraints included in the stored representations.In order to test our intuitions, we built a Distributional Semantic Model to compute a compositional cost for the sentence unification process. Our tests on several psycholinguistic datasets showed that our model is able to account for semantic phenomena such as the context-sensitive update of argument expectations and of logical metonymies

The importance of extensive literature reading in the English as a Foreign Language (EFL) context has been given increasing attention in recent research. Literature reading is also a required part of the national syllabi of the (EFL) courses offered to both adolescents and adults at Upper Secondary level in Sweden. This thesis aims to investigate the teachers’ process of making literature choices for extensive reading in upper secondary EFL courses in Sweden. Eight teachers of three different student groups took part in the study, representing adolescent university preparatory programs and vocational programs, as well as programs for adult students. Questionnaires were used and the data was analyzed for patterns revealing three main factors affecting teachers’ literature choice: language proficiency, reading experience and contextual factors. These three factors were fitted into the theoretical framework of psycholinguistic and sociolinguistic reading models, with the addition of a perspective of motivational research. The results of this survey underline the importance of extensive reading, according to teachers, and that motivation for literature choice can be primarily related to factors associated with psycholinguistic reading models. The survey also points to the need for further investigating of teachers’ own experiences of literature reading, searching for deeper motivational factors which influence teaching choices. Another future field of research is the choice of reading activities assigned together with the chosen literature, which probably also influence teachers’ choices in the Swedish EFL classroom.

Devoir et pouvoir, comme les verbes modaux d’autres langues, ont déjà fait l’objet d’une littérature abondante. Le fait qu’ils puissent recevoir des sens différents selon leur contexte d’emploi a particulièrement suscité l’attention des sémanticiens et des pragmaticiens. Cette thèse revient sur la question de la nature des différentes interprétations de devoir et pouvoir, et tente d’établir si leur plurivocité relève de la polysémie ou de la sous-spécification. L’hypothèse polysémique, la plus répandue dans la littérature française, implique qu’au moins le sens radical et le sens épistémique soient inscrits dans la langue et donc représentés en mémoire. Selon l’hypothèse de la sous-spécification, la multiplicité de sens relève de l’enrichissement contextuel d’un unique sens sous-spécifié stocké dans le lexique mental. L’état actuel des recherches, l’examen des différentes interprétations de devoir et pouvoir et de la sous-détermination potentielle de leur sens en contexte, comme l’étude de leur évolution sémantique en diachronie, ne permettent pas de falsifier l’une ou l’autre hypothèse. Des méthodes expérimentales, développées en psycholinguistique et en pragmatique expérimentale, sont donc convoquées. Notamment, l’examen des temps de traitement en lecture, dans une expérience d’eye tracking manipulant le sens et le contexte, suggère une représentation effectivement polysémique pour devoir, mais une représentation monosémique sous-spécifiée pour pouvoir. Devoir et pouvoir sont souvent traités ensemble, les études considérant que l’un constitue, dans son domaine modal, le pendant de l’autre. Nous relevons que le parallèle effectué n’est pas aussi motivé qu’il n’y paraît<br>Devoir and pouvoir, as modal verbs in other languages, have already been the subject of extensive literature. The fact that they can convey different meanings depending on the specific context in which they occur is of particular interest to semanticists andpragmaticians. This thesis focuses on the nature of the various interpretations of devoir and pouvoir and attempts to ascertain whether their meaning multiplicity is a result of their polysemy or of their underspecified semantics. The polysemy hypothesis, which is the prevalent view in the French literature, implies that at least both the root sense and the epistemic sense fully belong to the linguistic system and hence that both are represented in memory. On the contrary, according to the underspecification model, contextual enrichment of a unique underspecified meaning stored in the mental lexicon accounts for meaning multiplicity. The current state of research, the review of the several possible interpretations of devoir and pouvoir, the investigation of potential meaning underdetermination in context, as well as the study of their semantic evolution in diachrony, do not allow us to rule out any of the two hypotheses. Experimental methods, developed in psycholinguistics and in experimental pragmatics, are thus used. Notably, analysis of processing times in reading in an eye tracking experiment in which both meaning and context are manipulated favours a polysemic representation for devoir, but a monosemic and underspecified representation for pouvoir. The two modal verbs are traditionally examined together since it is assumed that one matches the other in its own modal domain. This thesis casts doubt on this assumption

<p>The present study concerns cross-linguistic influence in the spoken French of multilingual learners. The main purpose is to investigate to what degree, and in what manner, previously acquired languages (L1, L2(s)) influence the target language, L3. Given the fact that the study only concerns spoken interlanguage, it makes use of a psycholinguistic perspective, which takes models of oral production into account.</p><p>The analysis is divided into two main parts. The first concerns the oral production of 30 Swedish learners of French, who fall into three groups according to their previous exposure to French: beginners, secondary school students and university students. The results show that proficiency in the L3 is crucial in at least two ways. First, there is a correlation between the level of proficiency in the L3 and the number of instances of cross-linguistic influence in that the least advanced learners produce the highest number of cross-linguistic lexemes, whereas the most advanced learners produce the lowest number. Second, the level of proficiency in the L3 is decisive for the number of background languages (L1, L2) used during oral production in L3: the lower the proficiency in the L3, the more background languages are used, and vice versa.</p><p>The second part of the analysis contains six case studies of learners with partly different L1s and L2s. It focuses on the roles of the background languages during conversation in L3 and on the factors contributing to the attribution of these roles. The results point at both similarities and differences between the learners with respect to the roles of the background languages. A result common to all the learners is the use of Swedish L1/L2 and English L1 as an instrumental language, i.e. a language used rather strategically with a communicative purpose. The use of these languages in this function seems to be due to the fact that Swedish and English are shared languages between the learner and the interlocutor.</p>

Nous proposons une contribution empirique aux tentatives récentes d'unification des sciences cognitives et des sciences sociales.La Théorie de l'Attraction Culturelle (CAT) propose de s'atteler à des questions interdisciplinaires en utilisant une ontologie commune faite de représentations.D'après la CAT, malgré des transformations au niveau micro, la distribution globale des représentations peut rester stable grâce à des attracteurs culturels.Cette hypothèse est difficile à tester, mais les technologies du web permettent de combiner les avantages des techniques existantes pour étendre le champ des études possibles.Nous présentons deux études de cas sur de courts énoncés écrits.La première examine les changements que des citations subissent lorsqu'elles sont copiées en ligne.En combinant psycholinguistique et fouille de données, nous montrons que les substitutions de mots sont cohérentes avec l'hypothèse des attracteurs culturels, et avec les effets connus de variables lexicales.La deuxième étude étend ces résultats, et utilise une expérience web permettant de récolter des chaînes de transmission de qualité et en grande quantité.En étendant un algorithme bioinformatique, nous décomposons les transformations en des opérations plus simples, et proposons un premier modèle descriptif du processus qui relie les connaissances psycholinguistiques sur la transformation de phrases aux tendances de haut niveau identifiées dans la littérature sur l'évolution culturelle.Enfin, nous montrons que la compréhension de l'évolution de telles représentations nécessite une théorie du sens des énoncés, une tâche pour laquelle nous explorons les approches empiriques possibles<br>We propose an empirical contribution to recent attempts to unify cognitive science and social science.We focus on Cultural Attraction Theory (CAT), a framework that proposes a common ontology made of representations for cognitive and social science to address interdisciplinary questions.CAT hypothesizes that in spite of important transformations at the micro-level, the overall distribution of representations remains stable due to dynamical attractors.Testing this hypothesis is challenging and existing approaches have several shortcomings.Yet, by taking advantage of web technologies one can combine the advantages of existing techniques to expand the range of possible empirical studies.We develop two case studies to show this with short written utterances.The first examines transformations that quotations undergo as they are propagated online.By connecting data mining tools with psycholinguistics, we show that word substitutions in quotations are consistent with the hypothesis of cultural attractors and with known effects of lexical features.The second case study expands these results, and makes use of a purposefully developed web experiment to gather quality transmission chain data sets.By extending a bioinformatics alignment algorithm, we decompose transformations into simpler operations, and propose a first descriptive model which relates psycholinguistic knowledge of sentence transformation to evolutionary trends elicited in the cultural evolution literature.Finally, we show that further understanding the evolution of such representations requires an account of meaning in context, a task for which we flesh out possible empirical approaches

PhD (Psychology)<br>Department of Psychology<br>The aim of the study was to develop a conceptualized model that will enhance language acquisition of children between 0 and 3 years. Language is a use of words and symbol to convey message, or communication. Generally, from birth to the age of four months children express their needs through crying and are soothed by the sound of voices or by low rhythmic sounds. When adults talk to children, children later imitate adult’s tongue movements and start to make sounds, coos and gurgles. Providing children with developmental stimulation and exposing them to learning opportunities increases their cognitive and social-emotional skills/abilities. Strategies to enhance language development are fundamental in children and can reduce many literacy related problems in later childhood. The objectives of the study are: to describe activities done by caregivers to influence language development; to identify factors that influence language development; to describe the importance of language development and to explain the disorders that are associated with language development. This study was qualitative in nature and it utilised an explorative design. This research design enabled the researcher to investigate the nature of acquisition comprehensively as well as the development of language and other factors that are related to it. The study was conducted at Vhembe District Municipality. Three villages were selected, namely Tshikuwi, Tshirolwe and HaMatsa villages, which are found in Makhado Municipality under Limpopo Province, South Africa. Purposive sampling was used to sample participants for the study. The individuals selected were those judged to have certain special characteristics as well as the ability to provide in-depth information for the purpose of the study. Thirty participants were selected to participate in the study. The semi-structured face to face interview and the interview guide with open-ended questions were used for data collection. Pre-testing of the interview guide was done to check if the guide would produce the expected results, three women from three different villages were selected for pretesting. All questions in the interview guide were addressed during data collection. Collected data were transcribed and analysed using thematic content analysis. The study adhered to the following research ethics: informed consent, anonymity, confidentiality, voluntary participation, no harm to the participants and dissemination of results. The study revealed that language is an important tool which is used to convey information from one person to the other. The findings indicate that language helps children to communicate and relate with other people. Language was also explained as a tool which is used to educate children, either at school or at home. The study shows that when children are learning language, they will also be stimulating their reasoning, thinking and problem-solving skills. In addition, it was also indicated that cognitive development reduces problems such as poor language development, a low self-esteem and isolation. The findings of this study show that there are a number of activities that can be used by caregivers and parents to foster the development of language in children. Those activities include, communicating with a child, reading of books, watching TV, naming of objects and explaining meaning of words. The study also identified several environmental factors that can be used to foster the development of language in children. The following environmental factors were identified in the study: communication, parental level of education, home socioeconomic status, caregiver’s personality and the availability of other children in the family. Lastly, the findings show that there are many disorders that may affect the development of language in children. The language disorders that the study identified include expressive language disorder, dyslexia, and inability to understand spoken. However, the study also reveals that these disorders may be treated. The findings of this study lead to the development of a conceptualized model to facilitate language acquisition in children between 0 and 3 years was developed. The meaning of one concept, namely reinforcement was explained in detail, in order for users of the model to understand its operational definition in the model. Reinforcement was explained because it has a diversity of meanings. The model enabled the researcher to create a link between research and what is happening in a society. Model validation was done to verify if the developed model relates to practical life, research and language development. The model for this study was validated for its applicability and usability. The drafted model was given to psychologists, speech therapists and parent to determine its usability and applicability. Keywords: language, language acquisition, language development model, language disorders.<br>NRF

Depuis ces deux dernières décennies, des efforts considérables en psychologie cognitive et neuropsychologie ont été déployés pour mieux comprendre les dynamiques entre les différents systèmes cognitifs (fonctions exécutives, mémoire, langage, etc.). L’observation d’une co-existence entre des atteintes en rétention à court terme verbale (RCTv) et en langage dans plusieurs pathologies a conduit certains chercheurs à concevoir une alternative à la conceptualisation classique de la RCTv, telle que proposée par le modèle initial de la mémoire de travail de Baddeley (1986). Particulièrement, les travaux sur l’aphasie ont conduit à l’émergence d’une approche psycholinguistique de la RCTv, postulant que le traitement et le maintien des mots font appel à des processus communs. Cette approche, et particulièrement le modèle d’activation interactive (N. Martin & Gupta, 2004; N. Martin & Saffran, 1997), prédit que les capacités en RCTv sont notamment modulées par les caractéristiques linguistiques engagées durant l’épreuve, variant selon la nature des items verbaux et la modalité de rappel, ainsi que par les compétences linguistiques des individus. L’objectif de la présente thèse était de tester ces prédictions à partir d’une exploration des relations entre le traitement sémantique des mots et la RCTv chez l’adulte sain (article 1) et dans la démence de type Alzheimer (DTA) (article 2). Dans le premier article, deux expériences mettent en évidence l’influence des liens associatifs entre les mots sur les capacités à maintenir temporairement des informations verbales. Les participants ont tendance à faussement reconnaître des mots associés aux mots de la liste, reflet d’une activation du réseau sémantique durant la rétention temporaire. Cette contribution sémantique est accentuée en situation de suppression articulatoire, une condition qui empêche le participant de répéter les listes durant la tâche. Les résultats du second article indiquent que la modalité de réponse module différemment la performance en RCTv chez les participants âgés sans atteinte neurologique et ceux atteints de la DTA. Ces données en RCTv sont compatibles avec les atteintes spécifiques du traitement du mot, également trouvées chez le groupe avec DTA. Les implications théoriques et cliniques de ces résultats sont discutées. Les limites et perspectives futures sont également abordées.<br>For the past two decades, considerable efforts have been made in cognitive psychology and neuropsychology in order to improve our understanding of the interactions between different cognitive systems (executive functions, memory, language etc.). Evidence of short-term memory (STM) and language impairments in many clinical populations has lead some researchers to put forward an alternative to Baddeley’s working memory model (1986). Based on studies of aphasia, the psycholinguistic approach of STM postulated that word processing and maintenance refer to common processes. Specifically, the interactive activation model (N. Marin & Gupta, 2004; N. Martin & Saffran, 1997) predicts that STM capacities are in particular affected by the linguistic characteristics engaged during the test, and vary according to the nature of verbal items and recall modality, as well as word processing ability. The goal of this thesis was to test some of these predictions by investigating the relationship between semantic treatment and STM in healthy adults (article 1) and dementia of Alzheimer Type (DAT) (article 2). In the first article, two experiments underline the influence of the associative links between words on the capacity to temporarily retain verbal information. Participants tend to wrongly recognize words associated with words from the list, reflecting an activation of the semantic network during temporary retention. This semantic contribution increases in a situation of articulatory suppression, a condition that limits the possibility to repeat lists during the task. The results of the second article indicated that recall modality influences differently the performance in STM of the elderly participants and those with DAT. These data in STM are compatible with a specific word processing impairment, also found in the group with DAT. The theoretical and clinical implications of these results are discussed. Limits and future research perspectives are also presented.

<p>A great deal of the research on cross-linguistic phonetic influence demonstrates that a speaker’s knowledge of their first language (L1) significantly affects their ability to perceive and produce sounds in any other language. While current studies show that cross-linguistic transfer occurs at the L3 level, some research suggests that properties of both L1 and L2 are present in the production of L3 (Ionin, Montrul & Santos, 2011). Many studies have addressed perception, production and factors that influence foreign speech in Second Language Acquisition (SLA) (Watkins, Rauber & Baptista, 2009). As the number of multilingual individuals rises, so does the need for studies that investigate not only SLA but also that of additional languages (i.e., Third Language Acquisition). This dissertation examines how cross-linguistic influence (CLI) occurs among English, Spanish, and Brazilian Portuguese (BP), examining instances of vowel reduction, an aspect of phonological production. English and BP are assumed as vowel reducing languages, whereas Spanish displays negligible vowel reduction in comparison. The vowel productions in L3 BP of two multilingual groups, L1English-L2Spanish-L3BP (ESP) and L1 Spanish-L2 English-BP (SEP) were investigated in two tasks: a paragraph reading task (PRT) and a carrier phrase task (CPT). The study sought to determine whether i) a native speaker of a vowel reducing L1 and a non-vowel reducing L2 displays more or less vowel reduction in a vowel reducing L3 than a native speaker of a non-vowel reducing L1 and vowel reducing L2 and ii) how length of exposure to an L3 affects phonological production. Three fixed effects were considered: duration ratio, intensity ratio and height (F1). The goal was to ascertain whether the Typological Primacy Model (TPM) (Rothman 2011, 2015) or the L2 Status Factor Model (Bardel & Falk 2007, 2012; Hammarberg, 2001) would be a better predictor for how vowel reduction would occur in the L3. Results for duration ratio and vowel height showed no significant difference between groups ESP and SEP. Results for intensity ratio suggest L2 Status as a better predictor, as group SEP displayed more phonological transfer than the ESP group. A hybrid approach to L3 acquisition models is proposed. </p>

L’approche psycholinguistique suggère que la rétention à court terme verbale et le langage dépendent de mécanismes communs. Elle prédit que les caractéristiques linguistiques des items verbaux (e.g. phonologiques, lexicales, sémantiques) influencent le rappel immédiat (1) et que la contribution des niveaux de représentations linguistiques dépend du contexte de rappel, certaines conditions expérimentales (e.g. format des stimuli) favorisant l’utilisation de codes spécifiques (2). Ces prédictions sont évaluées par le biais de deux études empiriques réalisées auprès d’une patiente cérébrolésée qui présente une atteinte du traitement phonologique (I.R.) et de participants contrôles. Une première étude (Article 1) teste l’impact des modes de présentation et de rappel sur les effets de similarité phonologique et de catégorie sémantique de listes de mots. Une seconde étude (Article 2) évalue la contribution du code orthographique en mémoire à court terme (MCT) verbale en testant l’effet de la densité du voisinage orthographique des mots sur le rappel sériel immédiat de mots présentés visuellement. Compte tenu du rôle déterminant du code phonologique en MCT et du type d’atteinte de I.R., des effets linguistiques distincts étaient attendus chez elle et chez les contrôles. Selon le contexte de rappel, des effets sémantiques (Article 1) et orthographiques (Article 2) plus importants étaient prédits chez I.R. et des effets phonologiques plus marqués étaient attendus chez les participants contrôles. Chez I.R., le rappel est influencé par les caractéristiques sémantiques et orthographiques des mots, mais peu par leurs caractéristiques phonologiques et le contexte de rappel module l’utilisation de différents niveaux de représentations linguistiques. Chez les contrôles, une contribution relativement plus stable des représentations phonologiques est observée. Les données appuient une approche psycholinguistique qui postule que des mécanismes communs régissent la rétention à court terme verbale et le langage. Les implications théoriques et cliniques des résultats sont discutées en regard de modèles psycholinguistiques actuels.<br>The psycholinguistic view of verbal short-term retention suggests that verbal short-term retention and language processing rely on common mechanisms. It predicts that all linguistic characteristics of verbal items (e.g. phonological, lexical, semantic) influence their immediate recall (1). It also predicts that the relative contribution of the different linguistic representational levels is a function of the recall context (2). In this view, some experimental conditions (e.g. modes of presentation of stimuli) are thought to promote the use of specific coding. Two studies assess these predictions in a brain-damaged patient (I.R.) who shows a phonological deficit as well as in control participants. In a first article, the impact of presentation and recall modes on phonological and semantic similarity effects of words is tested. In a second article, the contribution of orthographic coding in verbal short-term memory (STM) is assessed by testing the effect of orthographic Neighborhood (N) density of words on immediate serial recall (ISR) of written words. Due to her phonological deficit and because phonological representations play a predominant role in STM, distinct linguistic effects were expected in I.R. and in controls. Overall, (and) depending on the recall context, larger semantic and orthographic effects were predicted in I.R. and larger phonological effects were predicted in controls. In I.R., the data indicate that recall is influenced by semantic and orthographic characteristics of items but less by their phonological properties. The results also indicate that the impact of representations depends of recall conditions. In controls, a different pattern of results is obtained, suggesting an overall predominant contribution of phonological representations. Results support the psycholinguistic view of verbal short-term retention and are discussed in regard to current interactive activation psycholinguistic models of verbal STM and language processing.

Lingvistika je představena v aplikaci na řešení obtíží u lidí s jazykovým hendikepem, kteří se nacházejí ve speciálně pedagogickém prostředí. Ve výzkumu a rehabilitaci jazykových symptomů se nazývá klinickou lingvistikou. Klinická lingvistika kooperuje v multidisciplinárním kontextu s psycholingvistikou a neurolingvistikou. Práce nastiňuje potřebnost klinické lingvistiky také v českém měřítku. Je analyzována diagnóza vývojová anartrie u celoživotně nemluvících lidí s dětskou mozkovou obrnou. Vývojová anartrie je dosti častou diagnózou ve speciálním školství. Vyjevuje se její nedostatečný popis klinickou logopedií a potřeba její analýzy z klinicko-lingvistického hlediska. U vývojové anartrie je odhaleno druhotné narušení jazykových funkcí, sekundární dysfázie. Sekundární dysfázie u vývojové anartrie se manifestuje na všech jazykových rovinách, práce tuto manifestaci ukazuje. Inteligentní lidé s vývojovou anartrií se ocitají v situaci pozdní akvizice mateřského jazyka, který produkčně uchopují pouze ve formě psané řeči. Mají dílčí percepční obtíže. Fatální nemožnost mluvené produkce jim zapříčiňuje subvokální vnitřně řečový deficit. Je diskutován potenciál těchto lidí osvojovat jazyk v procesu pozdní akvizice, diskuze je uvedena v kontextu světového výzkumu o otázkách maturace a kritických period....