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Direct linkHarlaar, Nicole; Dale, Philip S.; Plomin, Robert – Journal of Child Psychology and Psychiatry, 2007
Background: It is widely believed that there are reciprocal links between reading achievement and reading exposure: children who read more do better at reading, and reading achievement itself promotes reading. We tested the hypotheses that these links arise because children's genetically influenced reading performance is correlated with their…
Descriptors: Twins, Early Reading, Reading Achievement, Risk
Harlaar, Nicole; Dale, Philip S.; Plomin, Robert – Child Development, 2007
Little is known about the underlying causes and developmental patterns of stability and change in early reading abilities. In a longitudinal study of twins (n=4,291 pairs), individual differences in reading achievement assessed by teachers using U.K. National Curriculum (NC) criteria showed substantial heritabilities at ages 7, 9, and 10 years…
Descriptors: Early Reading, Environmental Influences, Reading Ability, Reading Achievement
