The authors describe, illustrate and discuss the problem of substance abuse, current theory and research in causes and risk factors and alternative intervention approaches. These issues span topics of epidemiology, treatment, prevention, programme planning and evaluation. Particularly noteworthy is the material on the evaluation of intervention programmes and the dissemination of these programmes outside the research function. This text should be of interest to professionals. researchers and students in clinical psychology, child and adolescent psychology, social work, nursing and evaluation methods.