While we know that psychotherapy works, there is hearty debate about what makes it work. In the past, rival arguments have maintained that psychotherapy proves effective because of the treatment approach, patient contributions, or the therapeutic relationship. argues that clinical skills and methods also play a crucial role and that what therapists do has major consequences for improving practice. is the result of a multiyear, interorganizational Task Force commissioned to identify, compile, and disseminate the research evidence and clinical practices on psychotherapist skills and methods used across theoretical orientations. Edited by renowned scholars Clara E. Hill and John C. Norcross, this book provides original research reviews on the effectiveness of 27 specific psychotherapy skills and methods, including affirmation, self-disclosure, role induction, between-session homework, empathic reflections, mindfulness and acceptance, emotion regulation, and cognitive restructuring. Each chapter on a therapy skill or method features clinical examples, diversity considerations, training implications, and bulleted therapeutic practices, while the final chapter summarizes the research evidence for the effectiveness of these skills/methods and emphasizes implications for clinical training and practice. Forcefully demonstrating what therapists to help clients change and live more effective lives, will serve as a go-to guide for psychotherapy practitioners of all persuasions and professions, as well as graduate students and psychotherapy researchers.