The symbolic play and social participation of six language-impaired (mean age 6:9) and eight normal language-learning children (mean age 2:9) were compared. Language impaired subjects demonstrated significant deficits in symbolic, adaptive, and integrative play behaviors in comparison with the linguistically equivalent normal subjects. (Author/DB)

Provides background information on Fred Piaget, and describes his three stages of day care director development: pre-managerial, concrete managerial, and formal managerial. (HOD)

Reviews and integrates several aspects of peer interaction in the infant/toddler period. Reveals convergence between age-related changes in social skills and similarly timed cognitive developments. (HOD)

Examined the ability of three-year-olds, four-year-olds, kindergartners, and second graders to predict how certain internal and external conditions affect behavior. In two studies, a forced-choice procedure revealed that even the youngest group could predict the effect of various causes, while a third study examined more complex types of causal…

Developmental changes in specific types of fantasy play and the relation of role taking, egocentrism, and receptive vocabulary were examined in two- to six-year-olds. Both frequency and duration of material and ideational fantasy play increased with age, but play patterns differed. Data suggest developmental progression from object to person…