Finds that (1) playfulness is a trait related to divergent, creative thinking; (2) allowing young children to play with objects can lead to increased performance on problem solving and divergent thinking tasks involving the same or similar objects; and (3) play training leads to short term gains in young children's cognitive performance.…

Discusses the use of visual media as symbol systems that gather, package, and convey knowledge. Media's different and often unique symbol systems are looked at as potentially serving as cultivators of mental abilities. Forty-nine references are provided. (Author/CHC)

Factor analytic studies suggest that there are six replicable second order cognitive factors. These six factors lend themselves to being interpreted as aspects of Royce's three ways of knowing: conceptual, perceptual, or symbolical. This view provides a unified explanation of the second and third order factors. (Author/CTM)