Introduces journal issue on adolescent substance abuse. Purpose of issue is to encourage exploration of inadequately researched areas by presenting articles on conceptual models, minority and disabled populations, and treatment which give new perspectives on the field. (CMG)

Reviews several key variables associated with problem behavior in general and drug abuse in particular. Proposes a theoretical approach both to the development of problem behavior and to ways of preventing it. Provides a conceptual rationale for the importance of peer-oriented prevention programs. (CMG)