en Educational Psychology پژوهشي Original <div style="text-align: justify;"><span style="color:#339966;"><span style="font-size:14px;"><span style="font-family:Times New Roman;"><span style="line-height:2;"><b>Objective: </b>The present investigation aimed to explore the efficacy of schema therapy in enhancing the dimensions of interpersonal relationships among individuals undergoing treatment for drug addiction in the city of Sirjan (Iran).<br> <b>Methods</b>: The research design employed was a semi-experimental approach, incorporating both control and experimental groups. The target population consisted of all drug addicts receiving treatment in Sirjan, while the sample size comprised 30 individuals, selected through the convenience sampling method and divided into two experimental groups (15 individuals each) and a control group (15 individuals). The experimental groups underwent schema therapy for a duration of 8 sessions, while data were collected using an interpersonal relationship questionnaire. The obtained data were subjected to statistical analysis of covariance using SPSS software version 26.<br> <b>Results</b>: The findings of the data analysis revealed that the treatment protocol effectively influenced interpersonal relationships and their various dimensions, leading to improvement.<br> <b>Conclusion</b>: According to our research outcomes, the implementation of schema therapy holds significant importance in the enhancement of interpersonal relationships dimensions throughout the duration of the therapeutic process for individuals receiving treatment for substance abuse.<span lang="AR-SA" dir="RTL" style="font-family:"B Zar""></span></span></span></span></span></div> interpersonal relationships, schema therapy, personal skill, substance dependence 41 55 http://ijer.hormozgan.ac.ir/browse.php?a_code=A-10-49-1&slc_lang=en&sid=1 Atefeh Mehdifar Atefeh.mehdifarr22@gmail.com 10031947532846002778 10031947532846002778 Yes Master of Clinical Psychology, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, Iran Fataneh Amirmahmoudi f.amirmahmoudi148@gmail.com 10031947532846002779 10031947532846002779 No Instructor, Department of Educational Sciences, Payam Noor University, Tehran, Iran Hamid Sabaghian Baghdadabad hamid.sabbaghian@pnu.ac.ir 10031947532846002780 10031947532846002780 No Master's degree in clinical psychology, Islamic Azad University, Anar branch, Anar, Kerman, Iran Esmaeil Zaighaminejad Smaeilzeyghami89@gmail.com 10031947532846002781 10031947532846002781 No Master's degree in clinical psychology, Fars University of Science and Research, Fars, Iran Marzieh Shahabizadeh Ma.sh.ne1367@gmail.com 10031947532846002782 10031947532846002782 No Master's degree in General Psychology, Sirjan Islamic Azad University of Research Sciences, Sirjan, Kerman, Iran