Biological Factors (III) Genetic Abnormalities and Crime Advanced Higher Modern Studies
Today you will examine: <ul><li>The connection between genetic abnormalities and crime </li></ul>
Normal human chromosomes (23 airs) Determine sex
XYY Abnormality
Super Male Syndrome <ul><li>Above average height </li></ul><ul><li>Below average intelligence </li></ul><ul><li>Behavioura...
XYY <ul><li>Criminal behaviour - lower intelligence? </li></ul><ul><li>XYY as a defence in court? </li></ul><ul><li>Very l...
Twin Studies <ul><li>If there is a genetic link between genes and crime it should be evident in twin studies. </li></ul><u...
Twin studies <ul><li>However, twins are raised in the same environment </li></ul><ul><li>Or, if they are raised in differe...
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Biological Theories of Crime

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Biological Theories of Crime

  1. 1. Biological Factors (III) Genetic Abnormalities and Crime Advanced Higher Modern Studies
  2. 2. Today you will examine: <ul><li>The connection between genetic abnormalities and crime </li></ul>
  3. 3. Normal human chromosomes (23 airs) Determine sex
  4. 4. XYY Abnormality
  5. 5. Super Male Syndrome <ul><li>Above average height </li></ul><ul><li>Below average intelligence </li></ul><ul><li>Behavioural difficulties in childhood </li></ul><ul><li>Studies in the 1960s suggested that XYY males were associated with violent crime </li></ul>
  6. 6. XYY <ul><li>Criminal behaviour - lower intelligence? </li></ul><ul><li>XYY as a defence in court? </li></ul><ul><li>Very limited evidence </li></ul>
  7. 7. Twin Studies <ul><li>If there is a genetic link between genes and crime it should be evident in twin studies. </li></ul><ul><li>Monozygotic (identical) </li></ul><ul><li>Dizygotic (non identical) </li></ul>
  8. 8. Twin studies <ul><li>However, twins are raised in the same environment </li></ul><ul><li>Or, if they are raised in different households they may still be within the same extended family </li></ul>

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