Genetic influences in different aspects of language development: the etiology of language skills in 4.5-year-old twins

Kovas, Yulia, Hayiou-Thomas, Marianna E, Oliver, Bonamy, Dale, Philip S, Bishop, Dorothy V M and Plomin, Robert (2005) Genetic influences in different aspects of language development: the etiology of language skills in 4.5-year-old twins. Child development, 76 (3). pp. 632-651. ISSN 0009-3920

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Abstract

The genetic and environmental etiologies of diverse aspects of language ability and disability, including articulation, phonology, grammar, vocabulary, and verbal memory, were investigated in a U.K. sample of 787 pairs of 4.5-year-old same-sex and opposite-sex twins. Moderate genetic influence was found for all aspects of language in the normal range. A similar pattern was found at the low end of the distribution with the exception of two receptive measures. Environmental influence was mainly due to nonshared factors, unique to the individual, with little influence from shared environment for most measures. Genetic and environmental influences on language ability and disability are quantitatively and qualitatively similar for males and females.

Item Type: Article
Schools and Departments: School of Psychology > Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology > BF0712 Developmental psychology Including infant psychology, child psychology, adolescence, adulthood
Depositing User: Bonamy Oliver
Date Deposited: 05 Mar 2013 12:47
Last Modified: 05 Mar 2013 12:47
URI: http://sro.sussex.ac.uk/id/eprint/43872
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