This text provides integrated and unified treatment frameworks for anxiety disorders and examines how contemporary integrated psychotherapy treatment models from different therapeutic interventions can be used to help patients. Dr. Koenigsberg provides a research-based overview of major themes that underlie these treatment models, then analyzes the symptoms and causes of specific anxiety disorders such as panic disorder, social anxiety disorder, and phobias, as well as obsessive-compulsive disorder, and posttraumatic stress disorder. Case studies of integrated or unified treatment approaches are provided for each disorder, along with the theoretical and technical factors that are involved in applying these approaches in clinical practice. Supplementary online materials include PowerPoint slides and test questions to help readers further expand their understanding of integrated and unified approaches for the anxiety disorders and assess their newfound knowledge. Graduate and undergraduate students, novice and seasoned therapists, and researchers will learn the rationale for and the history of past and contemporary integrated and unified models of treatment to gain better insight into anxiety disorders.