title: Male psychosexual development: role of sibling sex and ordinal position.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001290:Attitude; D001722:Birth Order; D004522:Educational Status; D005163:Factor Analysis, Statistical; D005191:Family Characteristics; D005260:Female; D006716:Homosexuality; D006801:Humans; D008297:Male; D010555:Personality Inventory; D011606:Psychosexual Development; D012380:Role; D012725:Sexual Behavior; D012801:Sibling Relations; D011795:Surveys and Questionnaires