Static 99: improving actuarial risk assessments for sex offenders / by R. Karl Hanson and David Thornton.: J2-165/1999

The purpose of the present study was to compare the predictive accuracy of two of these actuarial schemes: the RRASOR (Hanson, 1997) and the SACJ (see Grubin, 1998). Although rarely used in North America, the SACJ is routinely used in Her Majesty's Prison Service (England and Wales) and in many police departments in the UK. The SACJ (Structured Anchored Clinical Judgement) contains items related to sexual deviance, but also places considerable weight on non-sexual criminal history. The RRASOR (Rapid Risk Assessment for Sex Offence Recidivism), in contrast, almost exclusively targets factors related to sexual deviance. The RRASOR is widely used in Canada and the U.S., being the most common risk assessment tool used in post-sentence detention procedures (Doren, 1999). Given the different emphasis of the RRASOR and SACJ, one goal of the current study was to examine whether a simple combination of these two scales could improve upon the predictive accuracy of either original scale.»--Page 2

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