Now in a revised and expanded third edition, this widely adopted text offers a balanced review of major contemporary perspectives on substance abuse and addiction. Thoroughly updated chapters address disease models; psychoanalytic, conditioning, cognitive, and family systems formulations; and social and cultural foundations. Two new chapters broaden the scope of the volume with coverage of prevention models and comorbidity. Written in a lucid, accessible style, the third edition is grounded in the latest theory and research. Applications to the helping process are emphasized and learning is facilitated with case examples, review questions, and end-of-chapter summaries.