Jules Seeman is one of the earliest representatives of humanistic-experiential psychotherapy and research. He is the recipient of numerous local and national honors, including the American Psychological Association Division 32 Carl Rogers Award for his outstanding contribution to the profession and practice of humanistic psychology. Dr. Seeman spent six years with Carl Rogers at the University of Chicago Department of Psychology and the Counseling Center, and then came to Peabody College of Vanderbilt University, where he worked for the next 37 years. He was especially drawn to the area of what Rogers referred to as the fully functioning person , and over a lifetime of research and practice, developed the human system model of psychotherapy and optimal functioning. In the present volume Dr. Seeman illustrates how central elements of a person's behavioral system are integrally linked. Within this system, the core therapeutic processes that maintain and enhance the person's development are the processes of connection and communication. These two processes are basic to any form of therapy and help to explain why different forms of therapy work.