Based on a PhD dissertation submitted to the Florida State University, Tallahassee, Florida.

There are numerous and complex events taking place during brain maturation that provide the biologic underpinnings of learning and behavior. (MM)

The paper presented the case of a 9-year-old boy whose physical appearance and behavior were those of a 6-year-old, and questioned whether he should be diagnosed as immature or defective. (Author/GW)

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…

Children's emotional development from infancy through adolescence, is described through brief anedcotes and through photographs. Psychological explanations of child behavior are discussed. Children's reactions to parents, siblings, and peers, and to experiences such as pain, discovering one's body, eating, exploring, and visiting the doctor are…

The author's purpose in this article is to discuss the aspects of language (especially the development of language in children) to which biological concepts are most appropriately applied. While results of past studies would seem to show that language development is contingent on specific language training, it is important to distinguish between…