Concludes that strategies are not responsible for memory span development in children 7 through 13 years old. Running and fixed memory span tasks and a running probe task were administered to 38 children. The probe task showed age differences as great as with the fixed span task. Span was reduced by approximately half an item over all ages.…

A total of 41 children ranging in age from 9 months to 6 years, 6 months of age were observed playing at game-like tasks. Disruptive interventions were made at different times and with different levels of intensity. Children's reactions revealed developmental stages in wanting to do things by themselves; stages varied with the development of…

On the basis of a study involving 40 first-grade students, compares Pascual-Leone's and Keating and Bobbitt's developmental theories of information processing by contrasting their predictions about a classification task. Results falsified Keating and Bobbitt's model. Predictions from Pascual-Leone's theory were almost wholly confirmed. (RH)

Three studies explored children's adoption of cultural forms of representation. Investigated were (1) children's judgments from students' drawings about the age of the artist; (2) children's preferences for drawings and the extent preferences match teachers'; and (3) differences between drawings children produce for themselves and those they…

Investigated development of working memory in the transitional period from infancy to preschool years. The age-related increase in scores on the Imitation Sorting Task (IST) appeared to be about one unit every six months. Results suggest that the IST has a good construct validity. (AA)

Investigates (1) the relationships between cognitive performance and cognitive styles and predictive possibilities and (2) performance differences by sex, school, grade, and income in 92 Indian adolescents. Assessment measures included Liquid Conservation, Islands, Goat-Lion, Hanoi-Tower, Rabbits (Piagetian); Block Design (WISC-R); Paper Cutting…