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Peer reviewedLoehlin, John C.; And Others – Intelligence, 1994
Correlations on subscales of Wechsler intelligence quotient tests and the Revised Beta Examination were obtained for biologically related and unrelated individuals in 181 adoptive families in the Texas Adoption Project. Generally higher correlations for biologically related individuals support the importance of genetic influence in intellectual…
Descriptors: Adopted Children, Adoption, Cognitive Ability, Correlation
