The prediction of sexual recidivism is one of the most difficult tasks in forensic psychology since human behavior is dependent upon a variety of different factors. Yet assessing risk of recidivism in sexual offenders is an important societal and legal issue because it guides decisions concerning public safety and adequate treatment planning for sexual offenders. Two actuarial risk assessment instruments (ARAIs), the Stable-2007 and the Acute-2007, encompass risk factors that are able to change slowly (i.e., stable) or quickly (i.e., acute) and are therefore amenable for offender treatment programs to reduce the risk to sexually reoffend. By assessing dynamic risk factors, the Stable-2007 and Acute-2007 predict the probability to reoffend in adult male sexual offenders. This entry provides a snapshot of recidivism risk prediction and ...