Children were observed in five different preschools to determine the effect of variations in density on task and social behaviors. The densities varied from 1.16 m2 per child to 10.46 m2 per child. Predictions were made that positive social interaction and task behaviors would be lower in the schools with the higher densities. This did not occur, and the suggestion was made that past results might have been due to the disruption of ongoing social groups, rather than crowding.