Children (N=408) from three experimental infant schools in Israel were observed during their free play for three consecutive weeks, using observational categories based on Parten's (1932) work. Findings based on 2,157 observations provide norms of social behavior and organization for ages five to seven, an age group which was not studied…

It was hypothesized that children in age-heterogeneous kindergartens would be more prone to behave altruistically than would children in age-homogeneous kindergartens. It was found that children who were studying in heterogeneous classes were more altruistic than were children from homogeneous classes. (Author)