This is a reissue of the classic 1979, a major integration of original and known theory of group psychotherapy. Dr. Kellerman presents a theoretical integration of the structure of group process, group therapy inherent in that process, and the personality forces of individual members of the group. He shows how all these three components unite to produce a therapeutic-group environment. For the student and the clinician alike, this timeless book, never laced with jargon, provides unique amalgam of research and theory.