WJEC Criminology Unit 2 - Theories

WJEC Criminology Unit 2 - Theories What comes under Biological theories? (Correct) - Genetic theories, Physiological theories What comes under Genetic theories? (Correct) - 'XYY' theory, twin study, adoption study What is the 'XYY' theory? (Correct) - A male having an extra Y chromosome also known as super males What did Jacob et AL (1965) suggest about XYY? (Correct) - Males with XYY chromosomes are more aggressive and thus more inclined to be more violent then males with a single Y chromosome What did Jacob et al (1965) find out about the prison population? (Correct) - A significant of men in prison had XYY sex chromosomes instead of the normal XY. Individuals with XYY syndrome also have low levels of... (Correct) - Intelligence However what reason may be resulting in the XXY syndrome affecting crime rates? (Correct) - However, they are at an increased risk of developmental delay and learning difficulties....it has been found that there is a small association between learning difficulties and criminal behaviour. What contradictory evidence was found that has questioned the XXY syndromes theory? (Correct) - that testosterone and aggression levels amongst XYY men are no different from XY men