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| Cognitive Development | 2 |
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| Developmental Psychology | 2 |
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Peer reviewedNichols, Paul L.; Broman, Sarah H. – Developmental Psychology, 1974
Scores on a mental development scale were correlated for 8-month-old twins and other sibling pairs. Greater correlations were found between twins than sibling pairs. (ST)
Descriptors: Cognitive Development, Family Environment, Heredity, Infants
Peer reviewedBraungart, Julia M.; And Others – Developmental Psychology, 1992
The home environment of nonadoptive and adoptive sibling pairs was assessed using the Home Observation for Measurement of the Environment when each sibling was one and two years of age. Correlations between home environment scores for nonadoptive siblings were greater than those for adoptive siblings. (BC)
Descriptors: Adopted Children, Cognitive Development, Family Environment, Heredity
