The current study investigated the predictive validity of several popular risk-related assessment instruments with respect to seclusion. The Hare Psychopathy Checklist-Revised (PCL-R; Hare, 2003), Version 2 of the HCR-20 (HCR-20; Webster, Douglas, Eaves, & Hart, 1997), the Violence Risk Appraisal Guide (VRAG; Harris, Rice, & Quinsey, 1998), and the Level of Service Inventory-Revised (LSI-R; Andrews & Bonta, 1995) were coded from institutional files for a sample of 130 patients from a medium-secure forensic inpatient unit. Seclusion was indexed in terms of total number of seclusions during a period of two years and total time spent in seclusion. ROC analyses indicated that all instruments had small to moderate and significant predictive validity with respect to frequency of seclusion, but were less strongly predictive of duration of seclusion. Overall, Factor 2 of the PCL-R was the best predictor of seclusion. Implications for practice and the necessity for future and local research are discussed.
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