The last decade has witnessed a dramatic shift in theory, research, and treatment of Obsessive-Compulsive Disorder (OCD). Traditional behavioral models of the disorder have increasingly been integrated with cognitive perspectives, leading to better scientific understanding and enhanced treatment approaches. From leading scientist-practitioner David A. Clark, this authoritative, highly practical book reviews the breadth of current knowledge on OCD and its treatment and sets forth a cutting-edge framework for therapeutic work. Provided are readily applicable clinical tools that are theoretically grounded and evidence-based, making this an essential resource for anyone studying or treating this chronic and often debilitating disorder.

Initial chapters explore the complexities of OCD, reviewing its diagnosis, course, clinical presentation, and subtypes, and examining how obsessions and compulsions develop and are maintained. Elaborating on and refining existing cognitive and behavioral theories, Clark presents an expanded account of obsessional phenomena which forms the basis of his innovative treatment approach. The latter portion of the book spells out the nuts and bolts of clinical intervention. Strategies are outlined for cognitive-behavioral assessment and case conceptualization, and available OCD assessment instruments are reviewed. Chapters then offer step-by-step guidelines for conducting an array of carefully planned cognitive and behavioral interventions. Throughout, emphasis is placed on helping clients modify not only their primary appraisals and beliefs about intrusive thoughts, but also their faulty secondary appraisals of mental control. Including a wealth of case examples, sample dialogues, troubleshooting tips, and quick-reference tables and charts, the volume is readable and clinician-friendly. Reproducible appendices feature over a dozen requisite rating scales, client handouts, and homework tasks.

Scholarly yet accessible, this state-of-the-science book belongs on the desks of cognitive-behavioral therapists; clinicians of other orientations who may encounter clients with OCD in their practice; and students and residents in the full range of mental health fields. It will serve as a uniquely informative text for graduate-level courses and clinical training programs.