Risk assessment in offenders with intellectual disability: a comparison across three levels of security

William Lindsay, Todd E. Hogue, John Taylor, Lesley Steptoe, Paul Mooney, Gregory O'Brien, Susan Johnston, Anne Smith

Research output: Contribution to journalArticlepeer-review

99 Citations (Scopus)

Abstract

In mainstream offender samples, several risk assessments have been evaluated for predictive validity. This study extends this work to male offenders with intellectual disabilities. Participants from high-, medium-, and low-security settings, as well as community settings, were compared on a range of risk assessments. The Violence Risk Appraisal Guide, HCR-20—Historical Scale, the Risk Matrix 2000-C (combined risk), and the Emotional Problems Scales—Internalising discriminated between groups, with participants from high security having higher scores than those in medium security, who had higher scores than those in the community. The Violence Risk Appraisal Guide, all HCR-20 scales, the Short Dynamic Risk Scale, and the Emotional Problems Scales (Internalising and Externalising) showed significant areas under the curve for the prediction of violence. The Static-99 showed a significant area under the curve for the prediction of sexual incidents. The discussion reviews the value of these various scales to intellectual disability services.
Original languageEnglish
Pages (from-to)90-111
JournalInternational Journal of Offender Therapy and Comparative Criminology
Volume52
Issue number1
DOIs
Publication statusPublished - 2008

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