This volume is the most practical clinical guide on Acceptance and Commitment Therapy (ACT) yet available. It is designed to show how the ACT model and techniques apply to various disorders, settings, and delivery options with the goal of allowing researchers and clinicians to begin applying ACT wherever it seems to fit. The book is divided into three sections, with chapters demonstrating the effectiveness of using ACT in the treatment approach for a wide range of clinical problems. The first section describes the theory underlying Acceptance and Commitment Therapy as a treatment approach and the core intervention processes that encompass ACT. The second section presents ACT as it is applied to some typical behavioral disorders encountered by mental health and substance abuse practitioners. The last section examines ACT as it is used with a variety of other populations, problems, settings, and modes of delivery. This volume will be of great value to therapists, practitioners, and students who are interested in new developments in cognitive and behavior therapy.