Participation in Phase III will last about 2 years. All adolescent and parent participants in Phase III will first undergo research interviews. Child-only interviews will last 2 hours and will include questions about mood problems, problems with friends or family members, and substance use history. Parent-only interviews will be conducted in two 1-hour sessions and will include questions about their child's mood and behavioral problems, treatments, and how their child's problems have affected family life. Parent participants will also be asked to assist their child in filling out a questionnaire on mood and behavioral problems and to fill out a questionnaire concerning their own history of problems with mood or anxiety. The last of the initial research interviews will be conducted at the University of Colorado's Psychology Department. Parent and child participants, as well as other relatives, will be asked to talk about problems in family life and ways to solve them. Participants will also be asked to describe pictures from inkblot cards.