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Intellectual ability in adolescents with conduct disorder
J P Kennedy1, G R Richardson, L Dixon
1Department of Clinical Psychology, Northern Forensic Mental Health Service for Young People, St Nicholas Hospital, Newcastle upon Tyne, England.
Perceptual and Motor Skills
|March 9, 2004
Summary
Young offenders in the UK exhibit verbal IQ deficits typical of conduct disorders. Performance IQ scores have declined since the 1970s, suggesting a potential decrease in intellectual ability among this demographic.
Area of Science:
- Psychology
- Neuroscience
- Criminology
Background:
- Conduct disorder is frequently associated with cognitive deficits, particularly in verbal intelligence.
- Previous research indicated specific intellectual profiles in young offenders, but recent trends require investigation.
Purpose of the Study:
- To assess the cognitive abilities of a contemporary UK population of young offenders.
- To compare current intellectual functioning with historical data, specifically from the 1970s.
- To investigate potential declines in intellectual ability within this demographic.
Main Methods:
- Cognitive assessment of young offenders in the United Kingdom.
- Analysis of Verbal IQ and Performance IQ scores.
- Comparison of current findings with historical studies from the 1970s.
Main Results:
- Young offenders demonstrated typical verbal IQ deficits consistent with conduct disordered populations.
- Performance IQ scores in the current cohort were notably lower than those reported in studies from the 1970s.
- The observed decline in Performance IQ raises concerns about intellectual ability trends.
Conclusions:
- The findings confirm persistent verbal IQ deficits in young offenders with conduct disorder.
- A significant decline in Performance IQ suggests a potential deterioration of intellectual function over time in this group.
- Further research is warranted to explore the causes and implications of this observed intellectual decline.