Validation and extension of the Static-99

Abstract

The present study attempted to find predictive validity for the Static-99 using a community sample as well as improve the predictive quality of the measure with the addition of deviant sexual arousal as measured by the penile plethysmograph (PPG). Records for 50 clients presenting for psychosexual evaluations at a community sex offender treatment facility were examined to collect relevant data and recidivism information was obtained from the Oregon Department of Corrections. Data were examined using logistic regression to determine the validity of the Static-99 and . incremental validity of adding PPG information to the Static-99. Contrary to previous studies examining the Static-99 and PPG separately, results indicate that there were no statistically significant findings in the current community sample of offenders when attempting to predict sexual recidivism with either measure.