XYY study Flashcards
Jacob XYY study
Some crime might be due to chromosomal abnormality.
Sex chromosomes
Men= XY
The Y chromosome is what makes a person male.
Woman= XX
Hyper masculine
When a man has an extra Y chromosome this will lead to hyper masculinity. Around 1 in every 1000 new born babies are born with an extra Y chromosome.
Effects of XYY
Men who have this extra chromosomes are likely to be more aggressive than those with 1 Y chromosome
So might commit more violent crimes.
Links to crime
Studies of the XYY show that they are 10 times more likely than XY men to be found among criminal populations.
Limitations of XYY
After further research it was found that XYY men tend to commit NON- violent crimes, this shows we cannot categorize all crimes and we need to account for psychological, environmental and social factors that cause people to commit crimes