Methodological problems in the use of factor analysis: a critical review of the experimental evidence for the anal character.
D003431:Cross-Cultural Comparison; D005163:Factor Analysis, Statistical; D005619:Freudian Theory; D006801:Humans; D010551:Personality; D010555:Personality Inventory; D011606:Psychosexual Development; D012107:Research Design; D014039:Toilet Training