Eysenck and Eysenck (1977) compared 2070 prisoners' scores on the Eysenck Personality Questionnaire (EPQ) with 2422 controls. On measures of extraversion, neuroticism and psychoticism - across all the agegroups that were sampled - prisoners recorded higheraverage scores than controls.
agrees with the predictions of the theory that offenders rate higher than average across the three dimensions Eysenck identified
AO3:
LIMITATION:
However, Farrington et al (1982) conducted a meta-analysis of relevant studies and reported that offenders tended to score high on measures of psychoticism, but not for extraversion and neuroticism.
There is also inconsistentevidence of differences on EEG measures (used to measure cortical arousal) between extraverts and introverts (Küssner2017) which casts doubt on the physiological basis of Eysenck's theory.
means some of the central assumptions of the criminal personality have been challenged.
X
Cultural factors aren'ttaken into account
Criminal personality may vary according to culture
Bartol et al studied Hispanic, African-Americanoffenders in a maximumsecurity prison in New York
Divided into 6 groups based on their history and the nature of the offences
All were less extravert than a non-offendercontrolgroup whereas Eysenck would expect them to be more extravert
Suggested that this was due to the sample was a very differentculturalgroup from investigated by Eysenck
Questions how far the criminalpersonality can be generalised may be a culturallyrelativeconcept