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ERIC Number: EJ931875
Record Type: Journal
Publication Date: 2011-Aug
Pages: 8
Abstractor: As Provided
Reference Count: 0
ISSN: ISSN-1041-6080
A Twin and Adoption Study of Reading Achievement: Exploration of Shared-Environmental and Gene-Environment-Interaction Effects
Kirkpatrick, Robert M.; Legrand, Lisa N.; Iacono, William G.; McGue, Matt
Learning and Individual Differences, v21 n4 p368-375 Aug 2011
Existing behavior-genetic research implicates substantial influence of heredity and modest influence of shared environment on reading achievement and reading disability. Applying DeFries-Fulker analysis to a combined sample of twins and adoptees (N = 4886, including 266 reading-disabled probands), the present study replicates prior findings of considerable heritability for both reading achievement and reading disability. A simple biometric model adequately described parent and offspring data (combined N = 9430 parents and offspring) across differing types of families present in the sample Analyses yielded a high heritability estimate (around 0.70) and a negligible shared-environmentality estimate for both reading achievement and reading disability. No evidence of gene x environment interaction was found for parental reading ability and parental educational attainment, the two moderators analyzed. (Contains 4 tables and 1 figure.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A