Abstract
Indoor spatial movements, activity choices, social interaction, and motoric behavior in play were observed in a sample of 34 4-yr.-old children. No sex differences in amount or rate of use of space were obtained. However, sex differences in preferences for activity, patterns of social interaction, and motoric behavior within activity areas indicated that girls distributed their attention among social and nonsocial stimuli more evenly than did boys. Support for the energizing effect of play with other boys was also obtained.