Research in Psychotherapy is a comprehensive synthesis and assessment of the psychotherapeutic research literature for the use of both researchers and those in clinical practice. It is designed as a general reference work, an instruction guide, and a source of information about specific aspects and problems of research.

The book consists of three parts. Part 1 discusses principles and methods of research as they are applied to psychotherapy. It provides general background material and principles to help non-researchers appreciate some of the important problems that are...