Psychotherapy is known to be effective, but the relative efficacy of different treatment approaches has been more difficult to comprehensively establish. While research into the common factors across the different types of psychotherapy has revealed the underlying active ingredients of therapy, the application of common factors research to clinical practice has been elusive. Client expectations, motivation, and symptom severity are uniquely measurable before treatment commences and amenable to direct intervention. This book reports the findings of a study of individuals undergoing...