Now revised and updated, this widely used text comprehensively reviews theories of addiction to give students and professionals a multidisciplinary foundation for clinical practice. It explores the causes and mechanisms of substance and behavioral addictions, as well as implications for helping people recover. Providing a science-based perspective, the text emphasizes the importance of using treatment and prevention strategies that are grounded in evidence. Thoroughly updated chapters address disease models; public health approaches; understanding and treating comorbidity; psychoanalytic, behavioral, cognitive, and family systems models; sociocultural approaches; behavioral addiction; and motivational models. Student-friendly features include end-of-chapter summaries and review questions.