Behavior modification programs have been shown to reduce recidivism in sex offenders. Therapists use various methods to assess individual sex offenders' recidivism risk. The level of recidivism in sexual offenders is lower than is commonly believed. Nevada has one of the lowest rates of recidivism among offenders at only 29.2 percent. This was much lower than otherwise expected, compared with overall sex offender recidivism rates. Criminal recidivism is highly correlated with psychopathy. Overcrowding in prisons is often due to recidivism. There have been hundreds of studies on the relationship between correctional interventions and recidivism. Education has been shown to reduce recidivism rates. The study concluded that race does not play an important role in juvenile recidivism. Educational programming costs significantly less and is proven to decrease the rate of recidivism. The expectation is that mediation has the potential to substantially reduce cases of recidivism. Parties are also asked to count convictions handed down by foreign governments in determining recidivism. Many countries have a high recidivism rate. PCL-R scores may be somewhat less predictive of violence and recidivism in women.