🧬 Jacob's XYY Study

Question 1

Jacob’s XYY Study

Answer 1

XYY syndrome in males makes
them genetically predisposed to
criminality.

Question 2

XYY - study

Answer 2

Compared rate of XXY in
imprisoned criminals with
general population.

Question 3

XYY - study findings

Answer 3

Higher than average proportion
of inmates had XY

Question 4

XYY - features

Answer 4

Very tall, well-built, low
intelligence, high aggression,
violent.

Question 5

XYY - strengths

Answer 5

• Jacob et al found association with
  XXY and violent prisoners
• Price & Watmore found links with
  XYY and property crime

Question 6

XYY - limitations

Answer 6

• Having the syndrome doesn’t
  mean that is the cause of crime
• XXY men fit stereotype of violent
  offenders – labelling theory
• Low intelligence of XYY may give higher chance of being caught
• Syndrome is too rare to explain
  much crime