A comprehensive and ongoing assessment process using empirically based instruments developed specifically for sexual offenders to determine the level of risk for recidivism should be established. Rather than reviewing these issues in their entirety or discussing them in depth, the most important matters that policymakers and practitioners should be concerned with are briefly summarized below. Research has clearly demonstrated that many sex offenses are never reported to authorities. In some studies, recidivism is defined as an arrest during the follow-up period; in others, recidivism may be defined as a conviction for a criminal offense or a return to prison for a new crime. By comparison, the overall recidivism rate for these sex offenders was Grotpeter and Elliot found that only 2. Findings were based on the three-year postrelease offending of 9, sex offenders and , non-sex offenders released from prison in Single studies typically track one or more cohorts of sex offenders following an arrest, discharge from probation or release from prison to determine the proportion rearrested, reconvicted or returned to prison within a specified period of time. Multiple assessments to objectively identify the risk to re-offend sexually and the risk to commit non-sexually based crimes should be used. Services and resources should be offered to crime victims to reduce trauma. They also should recognize that analyses that fail to standardize the time at risk for everyone in a given group of offenders being studied may further undercount recidivism because some offenders will not have been at risk for the entire follow-up period. General recidivism rates of Treated sex offenders had a violent crime recidivism rate of Knowledge about general recidivism, in addition to sexual recidivism specifically, is important because many sex offenders engage in both sexual and nonsexual criminal behavior. The researchers found a sexual recidivism rate of 5. Not all treatment was equally effective.