The relation between Piaget's logical theory of formal operational thinking and his account of cognitive development is discussed. Formal operational thinking was found to be a unitary construct, and both heterogeneity of performance and decalage were found to be smaller than a recent review had suggested. (Author/KC)

This report reviews evidence concerned with age-related aspects of social perception processes and their effects on overt behavior. Focus is on the variability among children in comprehension and evaluation of action, motives, and consequences of modeled behavior. Findings indicated that comprehension of acts in terms of motives and correctness of…

Kohlberg, inspired by Piaget's cognitive developmental approach to moral development, expands the structural cognitive approach through more systematic longitudinal, cross-cultural, social class, and educational research. (Author)

Attempts to integrate recent models of social systems based on age and cognitive personality research with research on adolescence. Presents a conceptual model of how adolescents set personal goals, construct cognitive strategies, and evaluate their success in an age-graded sociocultural context. Discusses future directions for research based on…