A review of play in nonhuman animals indicates that play increases with phylogenetic status, is important for mature social development in more advanced species, reflects intentional activity, and is essential for the development of tool-using strategies. (Author)

Some research has found that observers believe overt mimicry is socially unacceptable and embarrassing in the presence of a stranger. It was hypothesized that observers would inhibit their mimicry of learned pairs of gestures in the presence of a stranger, and that their learning would be adversely affected unless they compensated for the…

Evaluated were the effects of symbol versus speech training instruction on the behavior of four autistic children (8-9 years old). Following observation of their classroom and free play behavior, Ss participated in a training sequence involving Peabody Rebus Reading symbols and more traditional speech training procedures. Ss' inappropriate…

This paper examines the interrelationship between children's acquisition and use of symbols and the development of imaginative play. The paper focuses on the use of pretend play as an expression of the child's capacity for symbolic functioning and as an index of intellectual development. The first section of the paper reviews developmental changes…

The biological and the cultural aspects of human play are inextricably linked and mutually influence each other. (LH)

Demonstrates that young autistic children suffer from deficits in social understanding and symbolic representations of other individuals. Data suggest that the core deficit appears to lie at the intersection of representational abilities and social experiences. (RWB)