en Health Education and Promotion پژوهشي Research Article <span style="font-size:12px;"><span style="font-family:Tahoma;"><span style="line-height:150%"><b>Background and Objective:</b> Body dysmorphic disorder (BDD) severely impairs psychological well-being. The present study aimed to compare the effectiveness of Stress Inoculation Training (SIT) and mindfulness training on appearance anxiety and self-criticism in female adolescents with BDD.</span><br> <span style="line-height:150%"><b>Materials and Methods:</b> A quasi-experimental pretest-posttest design with a two-month follow-up and a control group was utilized. Using purposive sampling, 45 female adolescents (aged 15&ndash;17) with BDD were selected from psychological centers in Ahvaz, Iran, in 2025, and randomly assigned to SIT (n=15), mindfulness skills training (n=15), or control (n=15) groups. The SIT group received nine 90-minute sessions, and the mindfulness group received eight 90-minute sessions. Data were collected using the Appearance Anxiety Inventory and the Levels of Self-Criticism Scale and analyzed via repeated-measures analysis of variance (ANOVA).</span><br> <span style="line-height:150%"><b>Results:</b> Both SIT and mindfulness training significantly decreased appearance anxiety and self-criticism compared to the control group (P<0.001), with gains maintained at follow-up. No significant difference was observed between the two active interventions.</span><br> <span style="line-height:150%"><b>Conclusion:</b> The SIT and mindfulness skills training are equally effective interventions for reducing appearance anxiety and self-criticism in female adolescents with BDD. These findings highlight the value of both cognitive-behavioral and acceptance-based approaches and provide clinicians with flexible, evidence-based options tailored to individual needs.</span></span></span><br> &nbsp; Anxiety, Body dysmorphic disorders, Cognitive behavioral therapy, Mindfulness, Self-concept 0 0 http://ajnpp.umsha.ac.ir/browse.php?a_code=A-10-598-3&slc_lang=en&sid=1 Fatemeh Asadollah Salmanpoor fatemeh.salmanpoor@iau.ac.ir 10031947532846009119 10031947532846009119 No Department of Psychology, Ahv.C., Islamic Azad University, Ahvaz, Iran. Fatemeh Sadat Marashian fsadatmarashian@gmail.com 10031947532846009120 0009-0004-6316-7040 Yes Department of Psychology, Ahv.C., Islamic Azad University, Ahvaz, Iran. Sahar Safarzadeh safarzadesa@gmail.com 10031947532846009121 0009-0006-7603-1913 No Department of Psychology, Ahv.C., Islamic Azad University, Ahvaz, Iran. Fariba Hafezi fhaffezi@gmail.com 10031947532846009122 10031947532846009122 No Department of Psychology, Ahv.C., Islamic Azad University, Ahvaz, Iran.