Topic 1 - what makes a criminal? (Biological)
physiological explanations of criminal behaviour
what hormone is linked to aggressive and criminal behaviour?
testosterone
how does high testosterone influence behaviour?
it increases aggression and dominance
who suggested high testosterone was associated with violent and criminal behaviour?
Glenn and Raine
what did Choy find?
people with low resting heart rate are more likely to offend
how is low resting heart rate linked to criminal behaviour?
it is linked to fearlessness and sensation seeking
what does a genetic explanation of crime suggest?
criminal behaviour can be inherited
what explanation did Brunner propose?
The warrior gene
what is the warrior gene?
a variation of the MAOA gene that is linked to aggression
how is the MAOA gene linked to violent/aggressive behaviour?
this gene produces an enzyme called MAOA which breaks down monoamine oxidase, leading to high levels of serotonin in the brain
what was Brunner’s sample when studying the MAOA gene?
5 violent men from one family in the Netherlands
what conclusion did brunner reach from the behaviour the 5 men shown?
a faulty MAOA gene may predispose impulsive violence and aggression
non-physiological explanations of criminal behaviour
who studied disrupted families being a cause for criminal behaviours?
Farrington
what was Farrington sample’s size?
411 working class boys (ages 8 to adulthood) from London
what 6 childhood risk factors were identified for later criminal behaviour?
what is differential association theory?
the idea that criminal behaviour is learned from those around them
who proposed differential association theory?
Sutherland
according to Sutherland, who are the most influential people?
close family and peer groups
What was Sutherland’s 3 key points?
what does kohlberg’s cognitive explanation focus on?
levels of moral reasoning
how is moral reasoning linked to crime?
criminals show immature moral reasoning at the pre-conventional level
what defines pre-conventional morality?
behaviour based on reward and punishment