This book is a collection of six theoretical and practice oriented papers on issues related to the problems of intervention in the social development of young children. Topics dealt with in the papers are: mother-child interaction in day care and home reared children; the history, function and sequelae of a form of reunion behavior following separation (avoidance of the mother) in home-reared children; the social and intellectual consequences of day care for high-risk infants; the implications, for educational intervention, of the processes which mediate between social events and intellectual competence; and the effects of peer interactions in facilitating the social development of preschool children. The final paper describes Project Aware, a program designed to facilitate social development in children in the kindergarten and elementary school years. (CM)