title: The peculiar problems of psychiatric research.
mesh_terms: D000328:Adult; D002648:Child; D005106:Exploratory Behavior; D006801:Humans; D001523:Mental Disorders / Q000523:psychology; D011570:Psychiatry; D011574:Psychoanalytic Theory; D011606:Psychosexual Development; D012106:Research; D006113:United Kingdom