Piaget's theory of cognitive motivation is examined. Other Piagetian theories are also explored: the distinction between figurative and operative aspects of knowledge, and passivity versus activity. A limited set of implications of Piaget's theory and description of intellectual development for methods of active education are discussed. (CT)

The Fullerton Longitudinal Study is a contemporary prospective investigation that spans approximately a quarter of a century. Commencing at age 1, children and their families were systematically followed every 6 months from infancy through preschool and annually at ages 5 through 17. They were again assessed at age 24. The course of development…

Reviews evidence showing the view of pervasive decrement in later life is being challenged. Evidence is accumulated that the intellectual performance of the older adult responds favorably to a variety of ecological, training, and motivational conditions, and that intellectual development in later life is characterized by plasticity not universal…