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IQ and Delinquency: A Direct Test of the Differential Detection Hypothesis

IQ and Delinquency: A Direct Test of the Differential Detection Hypothesis A number of studies have reported that juvenile delinquency is negatively related to IQscores. The IQ/delinquency relation has been questioned on the basis of the differentialdetection confound, which attributes the apparent relation to biased likelihood of detection,and thus inclusion in research, of low-IQ delinquents. A direct test of the differentialdetection hypothesis was conducted by comparing the mean IQ scores of two groups of delinquentsubjects from the same birth cohort. Group 1 had been detected in delinquent acts by police.Group 2 was not known to police, but was equivalent to group 1 on amount and seriousness ofself-reported delinquency. The two groups did not differ significantly on IQ, but both groupsscored significantly below nondelinquent cohort members. Results were inconsistent with theprediction of group differences posed by the differential detection hypothesis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Abnormal Psychology American Psychological Association

IQ and Delinquency: A Direct Test of the Differential Detection Hypothesis

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References (16)

Publisher
American Psychological Association
Copyright
Copyright © 1988 American Psychological Association
ISSN
0021-843X
eISSN
1939-1846
DOI
10.1037/0021-843X.97.3.330
Publisher site
See Article on Publisher Site

Abstract

A number of studies have reported that juvenile delinquency is negatively related to IQscores. The IQ/delinquency relation has been questioned on the basis of the differentialdetection confound, which attributes the apparent relation to biased likelihood of detection,and thus inclusion in research, of low-IQ delinquents. A direct test of the differentialdetection hypothesis was conducted by comparing the mean IQ scores of two groups of delinquentsubjects from the same birth cohort. Group 1 had been detected in delinquent acts by police.Group 2 was not known to police, but was equivalent to group 1 on amount and seriousness ofself-reported delinquency. The two groups did not differ significantly on IQ, but both groupsscored significantly below nondelinquent cohort members. Results were inconsistent with theprediction of group differences posed by the differential detection hypothesis.

Journal

Journal of Abnormal PsychologyAmerican Psychological Association

Published: Aug 1, 1988

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