XYY individuals in a special school.
D000293:Adolescent; D000328:Adult; D000886:Anthropometry; D001077:Aptitude Tests; D001722:Birth Order; D002648:Child; D002869:Chromosome Aberrations; D003071:Cognition; D004495:Education of Persons with Intellectual Disabilities; D005260:Female; D006801:Humans; D007360:Intelligence; D008297:Male; D008423:Maternal Age; D010555:Personality Inventory; D012606:Scotland; D012730:Sex Chromosomes