Abstract
<title>Abstract</title> <p>Objective This study aims to investigate the mediating roles of perceived stress and loneliness in the relationship between peer victimization and quality of life in adolescent students. Method Employing a quantitative research design based on a relational survey model, the study was conducted with data obtained from 471 adolescents (266 male, 205 female; mean age = 13.96 ± 2.15). Data were collected using a Personal Information Form, the Peer Bullying Scale, the Perceived Stress Scale, the UCLA Loneliness Scale (Short Form), and the KIDSCREEN-27 (13–18 years adolescent form). Data were analyzed using IBM SPSS and Hayes’ PROCESS Macro (Model 4) to perform mediation analyses. Results The findings revealed that peer victimization significantly exacerbates issues affecting quality of life. Furthermore, perceived stress and loneliness were found to have significant and partial parallel mediating effects on the relationship between peer victimization and quality of life. Notably, loneliness was identified as a more powerful psychosocial mechanism in diminishing quality of life during the process of peer victimization. Conclusion The results indicate that peer victimization is not merely a behavioral issue but a multidimensional risk factor threatening the psychological well-being of adolescents. The study emphasizes the importance of integrating stress management and the strengthening of social support networks into school-based psychological intervention programs aimed at mitigating these risk factors.</p>