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Direct linkHarlaar, Nicole; Meaburn, Emma L.; Hayiou-Thomas, Marianna E.; Davis, Oliver S. P.; Docherty, Sophia; Hanscombe, Ken B.; Haworth, Claire M. A.; Price, Thomas S.; Trzaskowski, Maciej; Dale, Philip S.; Plomin, Robert – Journal of Speech, Language, and Hearing Research, 2014
Purpose: Researchers have previously shown that individual differences in measures of receptive language ability at age 12 are highly heritable. In the current study, the authors attempted to identify some of the genes responsible for the heritability of receptive language ability using a "genome-wide association" approach. Method: The…
Descriptors: Receptive Language, Genetics, Individual Differences, Twins
Haworth, Claire M. A.; Dale, Philip S.; Plomin, Robert – Child Development, 2009
During childhood and adolescence, increases in heritability and decreases in shared environmental influences have typically been found for cognitive abilities. A sample of more than 2,500 pairs of twins from the Twins Early Development Study was used to investigate whether a similar pattern would be found for science performance from 9 to 12…
Descriptors: Twins, Etiology, Environmental Influences, Cognitive Ability
Oliver, Bonamy R.; Dale, Philip S.; Plomin, Robert – Cognitive Development, 2007
A behavioral genetic analysis of general writing ability was conducted using teacher assessments based on UK National Curriculum criteria for a sample of 3296 same-sex pairs of 7-year-old twins. Writing was highly heritable within the normal range (0.66) and at the low extreme (0.70). Environmental influences were almost all non-shared, with…
Descriptors: Writing Ability, Reading Skills, National Curriculum, Genetics
Oliver, Bonamy; Harlaar, Nicole; Hayiou Thomas, Marianna E.; Kovas, Yulia; Walker, Sheila O.; Petrill, Stephen A.; Spinath, Frank M.; Dale, Philip S.; Plomin, Robert – Journal of Educational Psychology, 2004
The authors investigated the etiology of low mathematics performance in 7-year-olds in the context of normal variation. The lowest 15% were selected from a representative U.K. sample of 2,178 same-sex twin pairs rated by their teachers according to National Curriculum criteria in 3 domains of mathematics. Model-fitting analyses of mathematics…
Descriptors: Foreign Countries, Heredity, Environmental Influences, Elementary School Students
Peer reviewedBishop, Dorothy V. M.; Price, Thomas S.; Dale, Philip S.; Plomin, Robert – Journal of Speech, Language, and Hearing Research, 2003
A study involving 356 twin pairs with early language delay found environmental influences shared by both twins were more substantial than genetic factors. Heritability was significantly higher in those with persisting difficulties but only when assessed in terms of parental concern at 3 years or professional involvement at 4 years. (Contains…
Descriptors: Child Development, Early Childhood Education, Early Identification, Early Intervention
