The validity of the Violence Risk Scale second edition (VRS-2) in a British forensic inpatient sample

Mairead Dolan · Rachael S. Fullam

74 citations0/0 files storedJournal of Forensic Psychiatry and Psychology

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Psychopathy, Forensic Psychiatry, Sexual Offending Criminal Justice and Penology Crime Patterns and Interventions

Abstract

The aim of the present investigation was to examine the validity of the Violence Risk Scale second edition (VRS-2) in a sample of 136 male medium secure psychiatric inpatients. Ratings on the VRS-2 were completed within the first month of admission based on preadmission records, court depositions, and criminal records. Construct validity was assessed using the Historical Clinical Risk-20 (HCR-20) assessment scheme in a subsample of 80 cases rated on the same basis. This showed that the VRS-2 and HCR-20 total scale scores correlated very highly, supporting the notion that the VRS-2 is a measure of violence risk. Both the HCR-20 and the VRS-2 could distinguish between violent and non-violent subgroups with reasonable effect sizes. There were highly significant correlations between the scales on the rating of items measuring comparable variables. Both measures were predictive of violence at 12-month follow-up, but the HCR-20 clinical subscore was the most robust contributor in the summary regression analysis. Our results offer preliminary evidence that the VRS-2 is a reasonably valid measure of violence risk and that it could be useful for research in this area.

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References

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2011Inpatient Violence and Aggression: A Literature Review 2010Predictive Validity and Other Psychometric Properties of the Short-Term Assessment of Risk and Treatability (START) in a Norwegian High Secure Hospital 2006The predictive validity and practical utility of structured schemes used to assess risk for aggression in psychiatric inpatient settings 2013A systematic review of risk assessment strategies for populations at high risk of engaging in violent behaviour: update 2002–8

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