Group-Analytic Psychotherapy is an intensive form of treatment in small groups. The synonymous term “group analysis” also covers applications in and beyond the therapeutic field. It fully incorporates psychoanalytic knowledge, but it is not merely a method of applying psychoanalysis to larger numbers, “group-specific factors” are considered to modify the psychodynamics. It is therapy in the group, of the group, and by the group, the group being an active agent of treatment. (9 pp.)