Meeting the growing demand for resources on evidence-based practice, this acclaimed work has now been fully revised and expanded with the latest treatment data. Like its predecessor, the second edition provides a systematic, comprehensive, and balanced evaluation of the current status of all major psychotherapeutic approaches. Detailed evidence is presented for the efficacy of widely used interventions for frequently encountered mental disorders and for special populations, including children and adolescents and older adults. The concepts that underpin psychotherapy research are explicated, and methodological challenges in translating research into practice addressed. Also examined is the impact of therapist and client characteristics on outcome, regardless of the specific interventions used.