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Do children with Williams syndrome really have good vocabulary knowledge? Methods for comparing cognitive and linguistic abilities in developmental disorders.

Brock, J; Jarrold, C; Farran, EK; Laws, G; Riby, DM; (2007) Do children with Williams syndrome really have good vocabulary knowledge? Methods for comparing cognitive and linguistic abilities in developmental disorders. Clin Linguist Phon , 21 (9) pp. 673-688. 10.1080/02699200701541433. Green open access

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Abstract

The comparison of cognitive and linguistic skills in individuals with developmental disorders is fraught with methodological and psychometric difficulties. In this paper, we illustrate some of these issues by comparing the receptive vocabulary knowledge and non-verbal reasoning abilities of 41 children with Williams syndrome, a genetic disorder in which language abilities are often claimed to be relatively strong. Data from this group were compared with data from typically developing children, children with Down syndrome, and children with non-specific learning difficulties using a number of approaches including comparison of age-equivalent scores, matching, analysis of covariance, and regression-based standardization. Across these analyses children with Williams syndrome consistently demonstrated relatively good receptive vocabulary knowledge, although this effect appeared strongest in the oldest children.

Type: Article
Title: Do children with Williams syndrome really have good vocabulary knowledge? Methods for comparing cognitive and linguistic abilities in developmental disorders.
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1080/02699200701541433
Publisher version: http://dx.doi.org/10.1080/02699200701541433
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Adolescent, Age Factors, Analysis of Variance, Child, Child, Preschool, Cognition, Cognitive Science, Developmental Disabilities, Down Syndrome, Humans, Learning Disorders, Linear Models, Psychometrics, Speech, Thinking, Vocabulary, Williams Syndrome
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Education
UCL > Provost and Vice Provost Offices > School of Education > UCL Institute of Education
URI: https://discovery.ucl.ac.uk/id/eprint/1477846
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