NSGP is a non-profit interdisciplinary professional organization for clinicians and others interested in group therapy and group dynamics. Founded in 1956 our mission is to provide a forum for the exchange of ideas about group psychotherapy. Please join us and become an NSGP member today! Group psychotherapy is a special form of therapy in which a small number of people meet together under the guidance of a professionally trained therapist to help themselves and one another. The Mission of the Northeastern Society for Group Psychotherapy is: To provide a forum for the exchange of ideas about group psychotherapy. To encourage the development of sound training in group psychotherapy. To establish and maintain high standards of ethical and professional practice. To disseminate information to interested professionals and the public about group psychotherapy.