Genetic/Neural explanations of offending behaviour Flashcards
What does it suggest?
that criminals inherit a gene or combination of genes that predispose them to commit crimes
What did Lange investigate?
13MZ and 17DZ twins, where one twin in each had served time in prison
What did Lange find?
that 10 of the MZ and 2 of the DZ twins had a co-twin who was also in prison suggesting genetic factors do play a role
What did Christiansen study?
87MZ and 147DZ twins
What did Christiansen find?
concordance of 33% for MZ and 12% for DZ, supporting the view that offending may have a genetic component
What did Tiihonen et al analyse? (000)
900 offenders and revealed abnormalities on two genes that may be associated with violent crime
What is the MAOA gene?
controls dopamine and serotonin - linked with aggressive behaviour
What is CDH13?
linked with substance abuse and ADHD
What are individuals with high risk more likely to have?
13 times more likely to have a history of violent behaviour
diathesis stress model?
tendency towards criminal behaviour comes about through combination of genetics and psychological triggers
neural explanation - what is APD associated with?
reduced emotional responses
neural explanation - what did raine conduct?
studies of APD on brain reporting there are several brain imaging studies demonstrating individuals and anti social personalities have redduced activity in prefrontal cortex
