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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