The Long-termi Effects of Group Psychotherapy:A Thirteen-year Follow-up Study

This paper describes a thirteen-year follow-up study of three separate psychoanalytic outpatient groups with a total of eighteen group participants. The study formed part of an outcome research project carried out over a period of sixteen years and based on a before-and-after survey and follow-ups after one-and-a-half and thirteen years. The purpose of the study was to evaluate and quantify the long-term effectiveness of the group therapy experience.