biological explanation of crime: personality Flashcards
what is meant by personality?
the relatively stable characteristics of a person which makes their behaviour consistent across situations
what are some characteristic traits of a criminal?
- aggressive
- impulsive
- extrovert
- lacking empathy
- cold and calculated
summarise Eysenck’s personality theory of crime
- combines biological and social factors
- personality is determined by genes but the effects are exerted under the influence of social factors
- criminal behaviour results from failure to learn that immature tendencies should be controlled
what are the three concepts of Eysenck’s personality theory?
extroversion
neuroticism
psychoticism
describe ‘introversion’
- shy
- reserved
- pessimistic
- reliable
describe ‘extroversion’
- outgoing
- spontaneous
- low arousal in cerebral cortex so need more stimulation
- stronger dopamine reward system so respond more positively to things like money
describe ‘neuroticism’
- oversensitive
- unstable
- anxious
describe ‘stability’
- calm
- level headed
describe ‘psychoticism’
- high testosterone
- lack empathy
- isolated
- aggressive
how did Eysenck measure personality?
- personality questionnaire
- measures extroversion and neuroticism
- high scores = hard to learn social behaviour
what is the RAS?
reticular activating system
- maintains optimum arousal level
- excites or dampens sensory info
what is the link between extroversion and ARAS?
extroverts are under aroused so ARAS inhibits impulses. therefore extroverts try to increase arousal levels so might be risk takers as the external stimulus arouses the ARAS
what is the link between introversion and ARAS?
introverts are over aroused so there is a lack of inhibition from ARAS. when the brain receives too much stimulation, they prefer calm and quiet
what is the ANS?
autonomic nervous system
what is the role of the ANS?
- maintains stability and mood
- balances the parasympathetic and sympathetic divisions so response isn’t too fast or slow
what are the two divisions of the ANS?
parasympathetic = calming
sympathetic = arousing
what is the relationship between psychoticism and hormones?
- men have high testosterone and low cortisol
- therefore more aggressive
define ‘delayer of gratification’
resisting the impulse to take the immediately available reward in the hope of obtaining a more valued reward in future
what is Eysenck’s theory of socialisation, including how this impacts children?
- criminal behaviour is selfish and concerned with immediate gratification
- socialisation during childhood will determine whether someone abides law
- a child is conditioned (socialised) to learn the difference between right and wrong and to control impulses
- if successful, antisocial behaviour produces anxiety so it is avoided
how do people with high E and N scores relate to criminal behaviour in terms of socialisation?
- extraverts seek reward
- less receptive to operant conditioning and less affected by punishment
- more likely to behave antisocially
why does a high extraversion score link to criminality?
drive for thrill enhancing behaviours
why does high neuroticism link to criminality?
more likely to act emotionally and less able to learn consequences
- fear conditioning and poor socialisation