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XYY and Testosterone Level

XYY and Testosterone Level. Genes. Species: A population whose offspring can produce fertile members. Genetics. XYY. The Super Male. XYY. Incidence is 1 in 1000 Males Higher testosterone Level. XYY Physical Appearance. Severe Acne Light Weight compared to Stature

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XYY and Testosterone Level

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  1. XYY and Testosterone Level

  2. Genes Species: A population whose offspring can produce fertile members

  3. Genetics

  4. XYY The Super Male

  5. XYY • Incidence is 1 in 1000 Males • Higher testosterone Level

  6. XYY Physical Appearance • Severe Acne • Light Weight compared to Stature • Larger Craniofacial Areas

  7. Developmental • Usually 7 Cm Taller Than Average height • Higher Testosterone Levels

  8. Explaining Violent Behavior Theoretically increased Mental Illness

  9. Theory • Higher Testosterone means higher Aggression • Theory Advanced in 1960’s to explain the behavior of violent males

  10. Taylor, 1984 • 1% to 3% higher incidence of XYY Males in Prison Population than General Male Population

  11. Holes in the Theory • Although the Prison Population of XYY Males is higher, the population of XYY VIOLENT Offenders was lower at the time the data was taken

  12. Holes in the Theory • Does NOT explain Female Violent Criminality • Institutionalized males with Kleinfelter’s Syndrome

  13. Case Files

  14. PMS Syndrome 49% Females in Prison Surveyed

  15. PMS Syndrome • Physical • Emotional • Behavioral

  16. Dalton Defense for Violent crimes

  17. PMS and Criminality • D’Orban and Dalton(1983) • 156 Prisoners, half committed crimes during paramenstruum

  18. Cases • Reid V Florida real Estate Commission (1966) • Lavato v Irwin

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