A Systematic Review of the Effectiveness of Psychological Approaches in the Treatment of Sex Offenders with Intellectual Disabilities

Background: Despite considerable advance and growth in the evidence base for psychological interventions as treatment for sex offenders with Intellectual Disabilities (ID), there remains limited evidence to support their effectiveness. This systematic review seeks to evaluate the effectiveness of psychological interventions on reducing re-offending rates for sex offenders with ID. Methods: A search of ten electronic databases, grey literature and reference lists were conducted using PRISMA methodology. Results: A number of studies appeared to establish positive treatment outcomes, demonstrated by improvements in attitudinal change, victim empathy and sexual knowledge. However, reductions in sexual re-offending during the follow-up period were not consistent across the studies. Conclusions: The current review provides limited evidence on the effectiveness of psychological interventions for sex offenders with ID, whilst also highlighting the need for further research