Previous research has demonstrated that adults are successful at visually tracking rigidly moving items, but experience great difficulties when tracking substance-like "pouring" items. Using a comparative approach, we investigated whether the presence/absence of the grammatical count-mass distinction influences adults and children's…

Analyzed narrative and logical processes used by children to give meaning and classify empirical objects. Analysis of sociocognitive interaction revealed children change meaning given to objects when they move from an individual situation to a social one. (BAC)

The first experiment investigates the ability of children ranging in age from two to five years to use taxonomic and complementary organizational principles in a forced-choice picture recognition task. The second experiment assesses two alternative classes of cues which may have been used by 2-year-olds to mediate their recognition pairings. (RH)

Explores 96 preschool children's utilization of complementary and taxonomic relations under varying task demands. Results indicated that, as task demands increased, (1) complementary intrusions produced systematic error in the taxonomic condition and (2) performance decreased in both conditions. Complementary pairs were maintained at progressively…

Cognitive activity of children from 1.5 to 5 years of age participating in problem solving and in spontaneous play was analyzed in terms of the successive coordination of existing patterns and the incorporation of new mental components. Analysis identified a series of developmental levels. (Author/RH)