Studied social interactions of intellectually normal Head Start children, children with low rates of social interaction, children diagnosed as socially-emotionally handicapped, and socially normal, nonhandicapped children. All groups differed on peer interactions, positive social initiations, and reciprocity rule. (Author/BB)

Studies the frequency with which preschool children used 11 play centers, engaged in social and nonsocial activities in each play center, and interacted positively and negatively with each other. (HOD)

Compares the affective reactions of nonretarded second- and third-grade children to those of mildly retarded children to a videotape in which a protagonist's initial behavior (good, bad) was factorially varied with the emotion he experienced in the concluding incident (happy, sad). (HOD)