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Peer reviewedCyphers, Lisa H.; And Others – Intelligence, 1989
Genetic involvement in specific verbal and spatial abilities and memory and perceptual speed was assessed using 163 adopted and 142 non-adopted 7-year-olds and their biological, adoptive, and non-adoptive parents. Results imply the existence of some genetic continuity from the early school years to adulthood for verbal and spatial abilities. (TJH)
Descriptors: Adopted Children, Biological Parents, Cognitive Ability, Early Childhood Education
