Normal infants were administered the Bayley Scales of Infant Development at 6 months and the Stanford-Binet Intelligence Scale at 3 years. At 6 months the quality of stimulation found in the early environment was measured. Results indicate that home environment may contribute to instability of performance on infant tests. (GO)

This longitudinal study attempted to assess how environmental factors affect the development of competence, as defined by White, by delineating in detail the everyday environmental transactions of a group of children from age 1 to 3. The key questions of this research were: (1) Are certain experiences encountered by the young child in his everyday…

Current research indicates the possible influence of IE development on cognitive development. Efforts are being made to identify behaviors by which parents or teachers can increase development of internal control expectancies in preschool children. Studies correlating children's IE scores with various mother behaviors or mother-child interaction…

Sixty-two socioculturally homogeneous, low-income black mother/child pairs were tested and observed when the infants were 2, 6, 12, 18, 24, 30, and 36 months of age to determine the relationship between variability in parenting attitudes, skills, and behaviors and consequent variability in children's intellectual development. As expected, the…

A case study of a pair of extremely deprived twin boys focuses on their verbal communication. Talkativeness alone was not regarded as a measure of intelligence, but attention was paid to the less talkative twin's greater use of imaginative speech. Speculations are made on the evolutionary role of creative speech. (IS)