This document considers the discretionary time use of young adolescents. Five domains of out-of-school time use are described: (1) activities alone or with friends; (2) activities with parents; (3) in-home or out-of-home chores, jobs and responsibilities; (4) organized activities including participation in recreational and cultural programs supervised by adults; and (5) television viewing and use of other media. Patterns of time use across all of these domains are examined. Time use research is reviewed that documents the increasing importance of peer relations and the increasing divergence in the activity sets of boys and girls. It is noted that early adolescents spend little time with their parents and families; eating and television viewing tend to be the most frequent family activities. The examination of chores, jobs, responsibilities, and earned income reveals the changing views of the capabilities of boys and girls; reinforcement of role stereotypes; and the desire among young people to earn money. The research reviewed suggests that television viewing peaks in early adolescence and begins to decline through the middle school years. A tremendous diversity within the domain of organized activities is noted. A section on the linkages between time use and the provision of public and non-profit sector services notes that young adolescents do not spend much time in activities sponsored by these sectors. The document concludes by noting several research priorities for the future. (NB)