Forensic Psychology - 6. Psychological Explanations: 1. Eysenck's Criminal Personality Flashcards
Factors of our personality according to Eysenck
It’s innate
Has a biological basis
Personality is genetic
How is our personality genetic?
We inherit a type of nervous system that predisposes us to offending
Was Eysenck’s theory of personality intended for studying crime?
No. It is a general theory that has been applied to crime
What does Eysenck’s theory of personality suggest all personalities are made up?
Suggests all personalities are made up of certain characteristics and the extent to which you have those traits determines your personality
What are the 3 dimensions that personality varies along?
Neurotic
Extravert
Psychoticism
Way of remembering the 3 dimensions that personality varies along
High PEN
How does the criminal personality theory link with biological explanations of criminality?
Because the theory views criminal behaviour as being due to activity of the nervous system (innate)
Criminal personality = (equation)
Psychoticism + extraversion + neuroticism
Traits of an extrovert (6)
Social
Impulsive
Expressive
Risk taking
Talkative
Outgoing
Why are extroverts sensation seeking according to Eysenck?
Because they have an under-aroused nervous system
What does extroverts requiring greater external stimulation lead to/result in?
Results in more risky behaviour and their impulsive and nervous nature
Do extroverts learn from mistakes?
No
What might draw an extrovert to committing a crime?
The thrill of it
CNS of extroverts
It’s less responsive than that of ‘normal’ people
Traits of an introvert (5)
Happy on their own
Cautious
Reflective
Self-aware
Takes time to make decisions
What does a less responsive CNS mean in terms of fight or flight?
It takes more to trigger the fight or flight response
Neuroticism traits (4)
Nervousness
Obsessiveness
Anxious
Irritable
How did Eysenck go about reducing social desirability in his personality questionnaire?
He included a ‘lie score’ which is out of 9. There were a number of questions which were all the same (just with different wording) so Eysenck could see if the answers were consistent and truthful
Nervous system of people with high neuroticism
Over-aroused sympathetic nervous system, meaning it reacts very quickly to stressors - the fight or flight response is easily and frequently triggered
When are those with high neuroticism likely to commit a crime? Why?
Likely to commit a crime in an emotionally charged situation because their fight or flight response is easily triggered
Traits of individual with high psychoticism (6)
Cold
Heartless
Anti-social behaviour
Aggressive
Insensitive
Unemotional
What causes aggressive behaviour among psychotics according to Eysenck?
Psychotics have excess dopamine neurons causing an overproduction of dopamine
Increased dopamine leads to inhibition of impulses (increased recklessness) during synaptic transmission
This inhibition potentially causes aggressive behaviour
What else do psychotics have increased levels in according to Eysenck?
Increased levels in testosterone
What crimes are psychotics linked to? Why?
Violent and sexual crimes, due to aggression (testosterone) and pleasure seeking (dopamine)