@article{ref1,
title="Is more better? Combining actuarial risk scales to predict recidivism among adult sex offenders",
journal="Psychological assessment",
year="2005",
author="Seto, Michael C.",
volume="17",
number="2",
pages="156-167",
abstract="The present study was conducted to determine whether combining the results of multiple actuarial risk scales increases accuracy in predicting sex offender recidivism. Multiple methods of combining 4 validated actuarial risk scales--the Violence Risk Appraisal Guide, the Sex Offender Risk Appraisal Guide, the Rapid Risk Assessment for Sexual Offense Recidivism, and the Static-99--were evaluated in a sample of 215 adult male sex offenders. These included the intuitively appealing believe-the-negative and believe-the-positive rules, adapted from medical decision making; the combination of absolute decision thresholds across a range of cutoff scores; and the statistical optimization methods of logistic regression and principal components analyses. No combination method provided a statistically significant or consistent advantage over the predictive accuracy of the single best actuarial scale.",
language="",
issn="1040-3590",
doi="10.1037/1040-3590.17.2.156",
url="http://dx.doi.org/10.1037/1040-3590.17.2.156"
}