PSYCHODYNAMIC THERAPIES. Psychodynamic theory was conceived by Sigmund Freud, the father of psychoanalysis . Freud believed that unconscious psychological forces determine thoughts, feelings, and behaviors. By analyzing the interactions among group members, psychodynamic therapies focus on helping individuals become aware of their unconscious needs and motivations as well as the concerns common to all group members. Issues of authority (the relationship to the therapist) and affection (the relationships among group members) provide rich sources of material that the therapist can use to help group members understand their relationships and themselves.