This paper reviews current models of problem solving to identify results relevant to teachers or instructional developers. Four areas are covered: information processing models, approaches stressing human abilities and factors, creative problem solving models, and other aspects of problem solving. Part of a theme issue on intelligence. (Author/SJL)

This essay attempts to describe how age relations are important to the social behavior of preschool children. Major behaviors examined are sociability, friendship, aggression, and dominance. Imitation, cognitive development, social cognition, nurturance, and prosocial behavior are also briefly considered. (Author/SJL)