This comprehensive text is organized into two parts, the first of which presents an overview of the history, development, and theory of the model, and its specific applications to treatment, training, assessment, and research. Part II includes the instruments and assessment tools originally developed by the authors during their extensive clinical and research experience. Clinical case examples drawn from over four decades of family therapy work enrich the text, and an entire chapter is devoted to the authors' own research findings, current research plans, and new directions in their work.