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Updated: May 19, 2026

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Published on: December 2, 2015
Ethnicity, violent offending, and vulnerability to schizophrenia: a pilot study
O J Mason1, S Medford, E R Peters
1Research Department of Clinical, Health and Educational Psychology, University College London, London, UK. o.mason@ucl.ac.uk
Abstract:
Previous research has highlighted increased risk for schizophrenia in Afro-Caribbeans as well as over-representation in the prison population. This small-scale study examined the relationship between criminality, ethnicity, and psychosis-proneness in a male prison sample. Twenty British Caucasian and 20 Afro-Caribbean prisoners were divided into equal sub-groups of violent and non-violent offenders. Participants completed measures of schizotypy, delusional ideation, and hostility. Afro-Caribbean offenders scored more highly on negative schizotypy and delusional ideation than their Caucasian counterparts. Violent offenders scored more highly on the positive symptoms of schizotypy than non-violent prisoners. Both ethnicity and violent offending may be relevant factors when considering vulnerability to psychosis in the offending population.
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