Theory and concepts of prevention science as applied to clinical psychology.

This article provides an overview for this special issue on prevention science in clinical psychology. A brief historical perspective on prevention in clinical psychology is presented. An even greater emphasis on prevention in the future is related to changes in the current health-care system and their likely impact on psychological practice as we move into the next century. Conceptual and theoretical models of the prevention enterprise are addressed with a distinction drawn between health promotion and disease prevention in the areas of mental disorders and general physical health. The classification of preventive interventions is discussed and methodological challenges to outcomes research are outlined. The article concludes with a discussion of training and public policy implications and a brief overview of the other articles included in this special issue on prevention science.