During toddlerhood the ability to organise actions for accomplishing goals rapidly increases. The developmental changes in actions and self-process that become part of this motivational system have seldom been studied simultaneously. Fifty-seven toddlers between the ages of 15 and 35 months were observed for two sessions while working on mastery…

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…