This text focuses on empirically validated ways of treating substance abusers. The authors emphasize a variety of current models and methods, and identify approaches that are still controversial. They suggest that substance abuse counselling is adapted specifically to the needs of the client. A special chapter covers the assessment and diagnosis of substance use disorders and offers a unique look at the differences between users and abusers. Relapse treatment is discussed at length, and special topics include basic pharmacology, prevention in in-and-out patient treatment settings, and the effects of substance abuse on families. This book should be of interest to degree and diploma students on courses of alcohol and drug abuse counselling in departments of counsellor education, social work, health and human services.