An Analysis of the Effectiveness of a Psychotherapy Program for Individuals Convicted of Sexual Crimes in South Korean Prisons: A Two-Wave Latent Change Score Approach

Prisons in South Korea have implemented psychotherapy programs for people convicted of sexual offenses to reduce sexual crime recidivism post-release. This study evaluated the effectiveness of the treatment by analyzing data from 13,200 men convicted of sexual offenses released from 2015 to 2019. We estimated the latent change score (LCS) for rape myths acceptance (RMA) and child sexual assault supportive attitudes (CSA) utilizing the 2W-LCS model. We examined the relationship between the LCS and sexual crime recidivism. Additionally, we employed multigroup analysis to compare the results based on program completion status. The results showed that regardless of completion, the LCSs for both RMA and CSA were significant and negative, indicating a decrease in both levels of cognitive distortion after treatment. In addition, the absolute values of the LCSs for both RMA and CSA were larger in the fully-treated group than in the partially-treated group. The CSA LCSs exhibited a significant relationship with sexual crime recidivism only in the fully-treated group. Overall, the study supports the treatment’s effectiveness and underscores the importance of treatment completion.