doi: 10.22038/jfmh.2023.22870 Background and Aim: Masturbation is a challenging issue with varying prevalence rates in different societies. The aim of this study was to investigate the effectiveness of an intervention program based on self-control, emotion regulation, and Islamic teachings in treating adolescent masturbation. Materials and Methods: This single case study was conducted in 2018 with a purposeful sampling of two participants (single girls aged 16 and 17) from the Mashhad Universities\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' Counseling Centers. Both participants had been masturbating for at least a year and received eight sessions of individual psychotherapy. Data were collected using the Emotional Control Questionnaire (ERQ) and Masturbation Scale. The A-B-A design with a recovery index and effect size was used for data analysis. Results: Data were analyzed using graph analysis and the recovery percentage method. The Blanchard and Schwarz recovery percentage formula was used to analyze data from single-case experimental designs. In this formula, the difference between the pre-test and post-test scores is divided by the pre-test score. According to Blanchard and Schwarz’s\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' recovery percentage formula, 50% or more improvement is significant, and if a person\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'s post-test score is lower than the cut-off point, the improvement will be clinically significant. Thus, the Islamic-based self-control and emotion regulation intervention was effective in breaking the habit of masturbation in both participants, who also showed significant mental health improvements. After completing the treatment and follow-up periods, both participants demonstrated improved levels of masturbation frequency and emotion regulation. Conclusion: Islamic-based self-control and emotion regulation can be an effective treatment for adolescent masturbation.

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