Utility of a Violence Screening Tool to Predict Recidivism in Offenders with Schizophrenia: A Total Forensic Cohort Study

Abstract

The aim of the present study was to investigate the utility of the screening tool developed by Wootton and colleagues (2008) to predict recidivism in a total cohort of offenders diagnosed with schizophrenia-spectrum disorders in the Canton of Zürich, Switzerland. The sample consisted of violent (including sexual) offenders between the ages of 18 to 65 years with ICD-10 diagnoses of schizophrenia, schizoaffective disorder, affective psychosis, and delusional disorder, sentenced either to court-ordered therapy or at least 10 month’s prison and discharged into the community (N = 34). The instrument was found to be useful in prospectively identifying low-risk individuals and retrospectively discriminating recidivists. Albeit the adaptation of the screening tool may have some usefulness when identifying low-risk individuals, caution is warranted when used in forensic samples.

Keywords: Risk Assessment, Violence, Crime, Forensic, Schizophrenia