"The book provides an in-depth, research-based analysis of three specific subtypes of substance abusers: addicts who fit the disease model, addicts with antisocial personality disorder, and functional addicts--those who lead otherwise successful lives. Particular attention is paid to the latter two groups, which have not been adequately studied previously. Characteristics of the three subtypes are illustrated through case studies that clearly demonstrate how subtype impacts prevention, intervention, and treatment. Most important, the book recommends practical intervention and treatment strategies that will enable concerned parties to identify--and help--each of these distinct groups."--Jacket.