Improving risk assessments for sex offenders: A comparison of three actuarial scales.
Top Cited Papers
- 1 January 2000
- journal article
- research article
- Published by American Psychological Association (APA) in Law and Human Behavior
- Vol. 24 (1) , 119-136
- https://doi.org/10.1023/a:1005482921333
Abstract
The study compared the predictive accuracy of three sex offender risk-assessment measures: the RRASOR (Hanson, 1997), Thornton's SACJ-Min (Grubin, 1998), and a new scale, Static-99, created by combining the items from the RRASOR and SACJ-Min. Predictive accuracy was tested using four diverse datasets drawn from Canada and the United Kingdom (total n = 1301). The RRASOR and the SACJ-Min showed roughly equivalent predictive accuracy, and the combination of the two scales was more accurate than either original scale. Static-99 showed moderate predictive accuracy for both sexual recidivism (r = 0.33, ROC area = 0.71) and violent (including sexual) recidivism (r = 0.32, ROC area = 0.69). The variation in the predictive accuracy of Static-99 across the four samples was no more than would be expected by chance.Keywords
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