Children with Autism Spectrum Disorders (ASD) have deficits in communication and delays in language development, but there have been few studies of their vocabulary. This study compared longitudinal parent report data from the MCDI collected for 49 children with ASD over three years with data from the MCDI norms. It focused on three aspects of lexical development: (1) change in lexical composition as evident in percentage of predicates/nominals; (2) order of emergence for predicate types and (3) predictive value of lexical variables for later grammatical development. ASD Groups were matched to typically developing group norms on total MCDI scores for each comparison. Subsequent analysis indicated: (1) no differences in the percentages of predicates/nominals for the two groups at 3 time points; and, (2) virtually identical orders of emergence for different predicate types with the exception of three meaning type categories—quantitative predicates, cognitive/affective predicates and predicates involving causal acts to change experiential states. Cognitive/affective predicates were found to come in somewhat later in ASD groups while quantitative predicates and predicates involving changes in experiential states came in earlier in ASD groups. This study also found (3) that lexical variables, especially number of predicates, strongly predicted grammatical complexity one year later, a process common in typical language development. The study concludes that lexical development in ASD follows the normal course, albeit later and more slowly. It also suggests that communication deficits in this population are rooted in challenges with social acts rather than from an inability to match meanings to words.

Children with Autism Spectrum Disorders (ASD) have deficits in communication and delays in language development, but there have been few studies of their vocabulary. This study compared longitudinal parent report data from the MCDI collected for 49 children with ASD over three years with data from the MCDI norms. It focused on three aspects of lexical development: (1) change in lexical composition as evident in percentage of predicates/nominals; (2) order of emergence for predicate types and (3) predictive value of lexical variables for later grammatical development. ASD Groups were matched to typically developing group norms on total MCDI scores for each comparison. Subsequent analysis indicated: (1) no differences in the percentages of predicates/nominals for the two groups at 3 time points; and, (2) virtually identical orders of emergence for different predicate types with the exception of three meaning type categories—quantitative predicates, cognitive/affective predicates and predicates involving causal acts to change experiential states. Cognitive/affective predicates were found to come in somewhat later in ASD groups while quantitative predicates and predicates involving changes in experiential states came in earlier in ASD groups. This study also found (3) that lexical variables, especially number of predicates, strongly predicted grammatical complexity one year later, a process common in typical language development. The study concludes that lexical development in ASD follows the normal course, albeit later and more slowly. It also suggests that communication deficits in this population are rooted in challenges with social acts rather than from an inability to match meanings to words.

Children with Autism Spectrum Disorders (ASD) have deficits in communication and delays in language development, but there have been few studies of their vocabulary. This study compared longitudinal parent report data from the MCDI collected for 49 children with ASD over three years with data from the MCDI norms. It focused on three aspects of lexical development: (1) change in lexical composition as evident in percentage of predicates/nominals; (2) order of emergence for predicate types and (3) predictive value of lexical variables for later grammatical development. ASD Groups were matched to typically developing group norms on total MCDI scores for each comparison. Subsequent analysis indicated: (1) no differences in the percentages of predicates/nominals for the two groups at 3 time points; and, (2) virtually identical orders of emergence for different predicate types with the exception of three meaning type categories—quantitative predicates, cognitive/affective predicates and predicates involving causal acts to change experiential states. Cognitive/affective predicates were found to come in somewhat later in ASD groups while quantitative predicates and predicates involving changes in experiential states came in earlier in ASD groups. This study also found (3) that lexical variables, especially number of predicates, strongly predicted grammatical complexity one year later, a process common in typical language development. The study concludes that lexical development in ASD follows the normal course, albeit later and more slowly. It also suggests that communication deficits in this population are rooted in challenges with social acts rather than from an inability to match meanings to words. / Medicine, Faculty of / Audiology and Speech Sciences, School of / Graduate

<p>Evidence suggests that children's pre-linguistic conceptual knowledge significantly influences the course of language acquisition. In a series of nine experiments we investigate this influence. We begin with two experiments using adult human subjects, in which we develop an analogue of children's early sensorimotor semantic representations and demonstrate that we have captured important aspects of meaning. We then use these sensorimotor semantic representations in simulation experiments using neural network models of language acquisition. First, we provide evidence that having these sensorimotor representations improves grammatical learning. Then we demonstrate that with these rich semantic representations there are strong correlations between the time course of lexical and grammatical learning analogous to those found in children. We suggest that this supports the position that grammar emerges from the formation of a rich lexicon. Finally, we show that it is not necessary to provide these sensorimotor representations for all words. We provide evidence that, given a directly grounded foundation of children's earliest words, the model can indirectly acquire grounded, embodied semantic representations for novel ungrounded words. Our results thus provide evidence that the initial structure of children's conceptual or semantic 'space' provides an important constraining and simplifying foundation that influences the course of later language acquisition.</p> / Doctor of Philosophy (PhD)

The purpose of this research is to examine the relationship between family structure including family size, number of parents at home, and presence of an older sibling at home, and the language development of young Latino children. I used data from the Head Start--Family and Child Experiences Survey (FACES) year 2000, which included information on 746 Latino preschool children and their families in different Head Start programs nationwide. A subgroup of 369 children were identified as English-language learners (ELL) because they were determined to be primarily Spanish speaking. Some of the findings indicate that more than two thirds of children (69%) who do not have two parents at home are primarily English speakers and more than two thirds of children (68%) who have two parents at home are primarily Spanish speakers. Independent sample t tests indicate there are statistically significant differences between Latino primarily Spanish speakers and Latino primarily English speakers on vocabulary and early literacy outcomes. Family background variables such as English language proficiency of parents and parent education are important factors that affect early language and literacy development of their children. In addition, family structure variables have some effects on these outcomes. The variables family poverty and family size, specifically having an older sibling, had negative impacts only on the primarily English-speaking group. The most influential social factors for the Latino primarily English-speaking preschool children's language and literacy outcomes are different than the most influential social factors for the same outcomes of their primarily Spanish-speaking preschooler counterparts who in general experience less favorable outcomes overall.

The purpose of this study was to compare PPVT-R age equivalents with language ages from the Test of Early Language Development - TELD 2 (Hresko, Reid, and Hammill, 1981) for a preschool population. This study sought to find the strength of association between the PPVT-R age equivalents and the TELD language ages. The subjects used in the study were 54 preschool children ranging in age from 3-6 through 4-7 years. Normal children were selected for the study based on their chronological age, sex, and socioeconomic status - SES.

In Sweden, there are three subjects that are mandatory to pass to be qualified for further studies (gymnasium) after year 9 of elementary school: English, Mathematics and Swedish. Sweden has a long tradition of teaching English as a foreign language in schools, from a very young age. However, municipalities and schools are given the freedom in Sweden to decide when to start teaching English, between age 7-10, which means that there could be a great difference between schools and different parts of the country. It also means that there are different reasons and discussions behind when and why students should start learning. The purpose of this paper is to investigate what reasons and discussions lie behind different schools’ decision of when to start teaching English. The head teachers and one teacher from three different types of schools were interviewed to find what their views were. The results look at whether the decision was based on research, if teachers were involved in the decision, whether they viewed positive or negative effects of an early language start, if there are any practical issues with an early start and whether or not different age starts affects an equal school for all. The four interviewees answered quite similarly to the questions with only some exceptions. The decision at all schools was to start English language instruction from year 1, in a playful manner with games, songs and rhymes. The general feeling at all schools seems to be that the earlier language instruction starts, the better. This assumption has not been based on any specific research, but rather something, that is considered a ‘universal truth’

The thesis deals with a topical and at the same time controversial isssue in the pre- shool education - the very early foreign language learning. The aim of the thesis is to outline the conditions of English language learning in pre-school facilities in the Czech Republic (more precisely in Prague) and analyse and compare selected methods used for teaching English. The thesis consists of the theoretical and the practical part. The theoretical part focuses on early language learning in the Czech and European context, on curriculum conditions and teachers' qualification in the Czech Republic and on the individual particularities of a pre-school child in relation to the early language acquisition. The summary will offer various opinions and results of researches in the field of early foreing language learning in the pre-school age. The aim of the practical part is to compare two methods for teaching English and survey the present conditions of English learning in selected pre-school facilities in Prague. The research will focus on the methods and their evaluation, on the pre-school facilities' experience with teaching English and on the contributions and disputable questions rising from the early English language learning from the point of view of the directors, parents and and speacialist in the...

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According to the Swedish preschool policy documents all children should have the same opportunities to develop their early language skills regardless of their social background. The purpose of this study is to investigate how preschool teachers work with children's early literacy and language development with focus on reading aloud. The reason is to investigate how the preschool teachers work to create an environment that stimulates children's literacy and language development. Another intention is to study how often reading aloud occurs in the children's home environment and what the preschool teachers thoughts are about that. The study is based on interviews with four preschool teachers and surveys that were answered by parents. This study's theoretical perspective is based on development and learning occuring through social contexts.The conclusions of the study is that the preschool teachers find it very important for the children to get their early literacy and language development stimulated and that they work to create an environment that fulfills this. The preschool teachers were not sure about if reading aloud in the children's home environment occurred. Whether or not, if reading aloud occurs at home the teachers believe that children will get their early language development and literacy at the preschool anyway. The surveys showed that all the parents read to their children at least once a week and it seemed that they thought it was meaningful. Key words: Social background, early language development, literacy, reading aloud, home environment. Nyckelord: Social bakgrund, tidig språkutveckling, litteracitet, högläsning, hemmiljö