Analyzes historical and contemporary theories of reinforcement and clinical application of reinforcement principles to behavior and modification therapy. Presents a behavioral momentum model that studies the allocation of behavior under changed environmental constraints and discusses the implications of this model on behavior modification and…

Reviews two general classes of strategies designed to reduce premature attrition and enhance treatment. Research on psychotherapy preparatory techniques indicates that these educational techniques are effective in reducing early-treatment attrition and may be especially effective with populations at high risk for dropout. (Author/GCP)

Children who experience homelessness are at increased risk for a range of health and mental health problems. In spite of this increased risk, they are often less likely to receive appropriate services. School-based programs offer considerable potential to reduce the gap between needs and appropriate services for these youth; however, there are few…

Youth violence is widely recognized as a critical social issue in the United States, and many approaches to prevention have been developed in recent years. Emerging research suggests that only approaches that are deeply embedded in cultural, community, and organizational contexts are likely to be powerful enough to have a meaningful collective…