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Personality Traits of 47, XYY and 47, XXY Males Found Among Juvenile Delinquents
Author(s) -
Nanko Shinichiro
Publication year - 1979
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1111/j.1440-1819.1979.tb00171.x
Subject(s) - juvenile delinquency , psychology , juvenile , personality , clinical psychology , klinefelter syndrome , developmental psychology , medicine , biology , genetics , social psychology
Summary The mental features of nine 47, XYY males and six 47, XXY males found among Japanese juvenile delinquents were examined. The results of intelligence tests suggested a slight impairment among 47, XYY and 47, XXY males. The psychiatric interviews and the psychological tests revealed that 47, XYY males had a high activity level while 47, XXY males had a low one. Analyses of the offense type and psychophysiological features supported these findings. As the activity level is considered to be largely determined genetically, the extra Y is suspected to be responsible for the high activity level and the extra X in males to be responsible for the low activity level.