Fully revised and updated, the second edition of this authoritative Handbook reflects the continuing evolution of the field over the last decade. The volume brings together established experts to review the theories, research, and treatment methodologies associated with the major cognitive-behavioral models. Part I describes historical foundations and basic principles. Extensively rewritten chapters cover such topics as assessment strategies and recent developments in the cognitive sciences, and new chapters have been added on case formulation and psychotherapy integration. Part II comprises detailed presentations of specific treatment approaches: cognitive therapy, rational-emotive behavior therapy, self-management approaches, problem-solving therapies, and child and adolescent applications. Chapters on each model combine thorough coverage of theory and research with illuminating clinical vignettes.