Criminal Behaviour - Individual Differences Explanation Flashcards
1 What is Eysenck’s criminal personality?
Eysenck (1967, 1978) - developed a theory of personality based on the idea that character traits tend to cluster along three dimensions:
- Extraversion-introversion - outgoing, having positive emotions and may get bored easily
- Neuroticism-stability - experience negative emotional states rather than positive emotional states
- Psychoticism-normality - egocentric, aggressive, impulsive, impersonal, lacking empathy and generally not concerned about the welfare of others
1 What did Eysenck (1982) suggest?
Each trait has a biological basis which is mainly innate - 67% of the variance for the traits is due to genetic factors.
1 Biological basis for extraversion?
Determined by the overall level of arousal in a person’s nervous system. A person who is under-aroused requires more stimulation compared to someone who is over-aroused who avoids this.
- Extroverts - seek external stimulation to increase cortical arousal
- Introverts - innately over-aroused and seek to reduce or avoid stimulation
1 Biological basis for neuroticism?
Determined by the level of stability in the sympathetic nervous system - how much a person responds in situations of threat
- Neurotic - slightly unstable and reacts/gets upset easily.
- Stable - more unreactive nervous system, calmer under pressure
1 Biological basis for psychoticism?
Related to higher levels of testosterone - men are more likely to be found at the end of this spectrum
1 PEN link to criminality?
- Extroverts - seek more arousal and thus engage in dangerous activities
- Neurotics - prone to over-react to situations of threat, explaining some criminal activity
- Psychotics - aggressive and lack empathy of others
1 How did Eysenck explain criminality?
In terms of the outcome between innate personality and socialisation.
A person is born with certain personality traits but interaction with the environment is important in the development of criminality.
1 Supporting research (delinquency) for Eysenck’s criminal personality?
Dunlop (2012) - both extraversion & psychoticism were good predictors of self-reported delinquency
1 Limitations of Dunlop’s study?
Ppts were all students and their friends (15-75) and delinquency was an assessment of minor offences in the previous 12 months (traffic offences, theft) - low ex. validity
1 Supporting research (twin studies) for Eysenck’s criminal personality?
Zuckerman (1987) - +0.52 correlation for MZ twins on neuroticism compared with +0.24 for DZ twins
Extraversion - +0.51 and 0.12
Shows Eysenck’s personality traits do appear to have a substantial biological basis as MZ are more likely to share more personality traits than DZ
1 Limitations of Twin studies?
Not as high as Eysenck had claimed, a +0.50 correlation means that about 40% of the variance in these traits is due to genes
1 Why is the notion of criminal personality flawed? Mischel & Peake (1982)?
A number of psychologists support a situational perspective, suggesting that people may be consistent in similar situations but not across all situations
Mischel & Peake - asked family, friends and strangers to rate 63 students in a variety of situations and found almost no correlation between traits displayed. Any regularity is due to them often being in similar situations
2 What are cognitive explanations focussed on?
The way that thinking affects behaviour decision making
2 What is Hostile Attribution bias?
When someone is more inclined to always think the worst. e.g if someone smiles at you but you think that person is actually thinking bad thought about you.
Such negative interpretations then lead to aggressive behaviour
2 What is hostile attribution bias an example of?
Cognitive distortion - ways that reality has become twisted so that what is perceived no longer represents what is actually true