en Educational Studies پژوهشي Original <div style="text-align: justify;"><span style="color:#669933;"><span style="font-size:14px;"><span style="font-family:Times New Roman;"><span style="line-height:2;"><b>Objective:</b> The primary aim of this investigation was to evaluate and compare the efficacy of acceptance and commitment therapy with emotional self-regulation therapy in enhancing the ego resiliency of adolescents experiencing depression in Tehran.<br> <b>Methods</b>: The target population for this research comprised all female ninth-grade students enrolled in high schools within District 5 of Tehran in the year 2024. A total of 45 participants were selected using purposive sampling techniques and subsequently assigned at random to three distinct groups of 15 individuals each (comprising two experimental groups and one control group). Data for the study were gathered utilizing the Block and Kremen Ego Resiliency Scale. The research hypotheses were tested employing multivariate analysis of variance.<br> <b>Results</b>: The findings indicated that the ego resiliency scores for the groups undergoing emotional self-regulation therapy and acceptance and commitment therapy were significantly superior to those observed in the control group. Furthermore, the ego resiliency scores of the acceptance and commitment therapy group were significantly higher than those of the emotional self-regulation group (p < 0.05).<br> <b>Conclusions</b>: Consequently, it can be inferred that both acceptance and commitment therapy and emotional self-regulation therapy were effective in enhancing ego resiliency among depressed adolescents, with acceptance and commitment therapy demonstrating a greater degree of effectiveness compared to emotional self-regulation.</span></span></span></span></div> Ego resiliency, Acceptance and commitment therapy, Emotional self-regulation therapy, Depressed adolescents 229 242 http://ijer.hormozgan.ac.ir/browse.php?a_code=A-10-349-1&slc_lang=en&sid=1 Negin Vahabi Vahabi@gmail.com 10031947532846005134 10031947532846005134 No PhD student in Psychology, Department of Psychology, Urmia Branch, Islamic Azad University, Urmia, Iran Ali Khademi ali.khademi@yahoo.com 10031947532846005135 10031947532846005135 Yes Professor, Department of Psychology, Urmia Branch, Islamic Azad University, Urmia, Iran Farnaz Farshbaf Manisefat maneisefat@yahoo.com 10031947532846005136 10031947532846005136 No Assistant Professor, Department of Psychology, Urmia Branch, Islamic Azad University, Urmia, Iran