Provides data indicating that development occurs in cycles, with behavioral competencies appearing and developing and then disappearing only to reappear again in a more complex form at a later age. Data on conservation and auditory-manual coordination in infancy are used to support this theory. (ED)

Maintains that the "getting into shape" hypothesis of explaining the inverted-U distribution of exercise play across age is likely incorrect. Argues that the biological study of human physical activity play, as recommended by Pellegrini and Smith (1998), will reveal whether physical activity play represents an example of…

Explores the relation between the infant's ability to negotiate the environment and the quality of the infant-mother attachment relationship. (HOD)

Partial and methodologically questionable replications of the Luria experiments on the child's verbal regulation of his motor behavior have led to results and conclusions contradictory to Luria's findings. An error in the methodology of two of these replications is discussed as the reason for a new investigation of Luria's hypothesis. Several…

This study explored the inter-relationships and developmental stability of inhibitory motor control, attentional control, delay of gratification, and resistance to temptation with 32 preschool children, and related these components of self-regulation to children's behavior at home and in the classroom. The children completed the T.O.V.A.…