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Lytton, Hugh; Watts, Denise – 1981
Stability of child and mother characteristics and the predictability of children's cognitive competence and affective characteristics were investigated as part of a longitudinal study. At 2 years of age, 46 sets of male twins and their parents were observed in the home and were rated for attachment, independence, compliance and conscience on the…
Descriptors: Children, Cognitive Development, Foreign Countries, Individual Characteristics
Lytton, Hugh; And Others – 1987
A longitudinal investigation of the social and cognitive development of male twins was conducted when twins were 2.5 years of age, and again when they were 8- to 10-years-old. This study was designed to re-examine the heritability of the traits studied at the earlier age and, thus, to address the question of the stability of genetic determination.…
Descriptors: Child Rearing, Cognitive Development, Family Relationship, Foreign Countries
