Proposes a model for cognitive development and the development of self efficacy in infancy. Examines the effects of two intervention programs in which caregiver responsiveness and amount of stimulation are varied. Subjects were 100 nine-month-old infants from working class families. (BD)

Tests predictions concerning the effectiveness of four different strategies for teaching 3-to 4-year-old children how to master a difficult construction task. Subjects were 32 preschool children. ( BD)

Uses the Bloom model of development to examine the relationship between family environment and reading performance over a 4-year period. Subjects were 3 cohorts of English children with mean ages of 7, 8, and 11 years at the time of the initial testing. (BD)