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Direct linkPlomin, Robert; Schalkwyk, Leonard C. – Developmental Science, 2007
Microarrays are revolutionizing genetics by making it possible to genotype hundreds of thousands of DNA markers and to assess the expression (RNA transcripts) of all of the genes in the genome. Microarrays are slides the size of a postage stamp that contain millions of DNA sequences to which single-stranded DNA or RNA can hybridize. This…
Descriptors: Measurement Techniques, Genetics, Environmental Influences, Science Process Skills
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
