Group psychotherapy.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005196:Family Therapy; D049673:History, 20th Century; D006801:Humans; D008722:Methods; D011574:Psychoanalytic Theory; D011615:Psychotherapy, Group / Q000266:history / Q000592:standards; D011616:Psychotherapy, Multiple; D012681:Sensitivity Training Groups; D000078329:Workforce