Actuarial Assessment of Risk for Violence

By M. Grann, H. Belfrage, A. Tengström. 2000

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Evaluating the Predictive Validity of the Compas Risk and Needs Assessment System (2009, unknown): “For example, in a Swedish study of mentally ill violent offenders, Grann et al. (2000) found AUC levels of .64 to .75 based on various follow-up time frames.”
Comparative Validity Analysis of Multiple Measures of Violence Risk in a Sample of Criminal Offenders (2005, methodology): “Grann et al. (2000) compared the Historical (H) part of the HCR-20 to the VRAG in a Swedish sample of 404 forensic patients.”
Identifying Three Types of Violent Offenders and Predicting Violent Recidivism While on Probation: A Classification Tree Analysis (2004, methodology): “Continuing the pursuit for common predictors, the Psychopathy Checklist: Screening Version (PCL: SV; Hart & Hare, 1997) or the HCR-20 Violence Risk Assessment Scheme (Douglas & Webster, 1999; Grann, Belfrage, & Tengstrom, 2000 ) also have been used to predict violent recidivism in all offender popu”
The efficacy of violence prediction: a meta-analytic comparison of nine risk assessment tools. (2010, unknown): “The pooled SD for Cohen's effect size d was defined as ͱ͑͑n 1 Ϫ 1͒SD 1 ϩ ͑n 2 Ϫ 1͒SD 2 ͒/͑n 1 ϩ n 2 Ϫ 2͒. f The study by Grann et al. (2000) did not present means and standard deviations in numbers but plots of distribution by outcome categories.”