Jacobs XYY Study Flashcards
(12 cards)
What are the strengths of Jacob’s XYY study?
Exploration of genetic factors
Large sample size, factual
New perspective of criminology
What were Jacob’s XYY study exploration of genetic factors?
Potential contection between genetics and criminal behaviour, biological factors could contribute to criminal tendencies
What was the new perspective of criminology did the XYY study provide?
Biosocial criminology, interactions between biological and environmental factors in development of criminal behaviour
What were Jacob’s XYY study’s weaknesses?
Overgeneralisation
Bias sampling
Limited scientific support
Why was the XYY study overgeneralised?
Not all XYY males have criminal behaviour, the extra Y chromosome does not directly cause crime
What bias sampling was there is the XYY study?
In prisons, as not fully representative of the general population of XYY chromosomal males
Why did the limited scientific support affect the XYY study?
Weak link, most XYY don’t engage in criminal behaviour
What did Jacob’s XYY study do?
Studied those with the XYY chromosomal pattern in males, to investigate whether this genetic condition had a higher likelyhood of aggressive or criminal behaviour
What did Jacob’s XYY study find?
Increased aggression and criminal behaviour in those with XYY
What did the Jacob’s XYY study conclude with biological influences?
Partially influence by biological factors, genetic trait XYY, along side environmental influences
What did Jacob’s XYY study conclude linked with criminality?
Associated with a predisposition for increases aggression and criminal behaviour in men
What is genetic screening and how is it used to reduce criminality?
For XYY chromosomes to prevent criminal behaviour
