University of Tabriz Journal of Modern Psychological Researches 2322-3340 20 77 2025 03 21 Testing the Causal Model of Adolescent Psychological Distress Based on Childhood Abuse and Alexithymia with the Mediating Role of Sleep Quality Testing the Causal Model of Adolescent Psychological Distress Based on Childhood Abuse and Alexithymia with the Mediating Role of Sleep Quality 115 129 19412 10.22034/jmpr.2024.62297.6276 FA Mohammad Zarei Nouroozi MA in Psychology and Education of Exceptional Children, Department of Psychology, Faculty of Educational Sciences and Psychology, Mohaghegh Ardabili University, Ardabil, Iran Seyfollah Aghajani Department of Psychology, Faculty of Educational Sciences and Psychology, Mohaghegh Ardabili University, Ardabil, Iran Shayan Noori Lasaki MA in Clinical Psychology, Department of Psychology, Faculty of Educational Sciences and Psychology, Mohaghegh Ardabili University, Ardabil, Iran 0009-0006-0180-7377 Journal Article 2024 07 02 The purpose of the present study was to test the causal model of adolescent psychological distress based on childhood abuse and alexithymi<strong> </strong>with the mediating role of sleep quality. This study was applied in terms of purpose, and descriptive in terms of structural equation correlation. The research population was all male and female students of the second year of secondary school in Mashhad in the academic year 1402-1403, and 352 of them were randomly selected. Data collection tools are psychological disturbance scales (DASS; Lovibond and Lovibond, 1995); Alexithymia (TAS; Bagby et al., 1994); Childhood Trauma Questionnaire (CTQ; Bernstein et al., 2003) and Sleep Quality Index (PSQI; Buysse et al., 1989). Mean and standard deviation were used to describe the findings, and Pearson correlation tests and structural equation models were used to infer information using SPSS-27 and AMOS-24 software. The results of this research showed that this research model has a favorable fit and that childhood abuse and alexithymia affect the psychological distress of adolescents both directly and indirectly through the mediation of sleep quality. These results can be used to design interventions aimed at preventing psychological distress<strong>.</strong> The purpose of the present study was to test the causal model of adolescent psychological distress based on childhood abuse and alexithymi<strong> </strong>with the mediating role of sleep quality. This study was applied in terms of purpose, and descriptive in terms of structural equation correlation. The research population was all male and female students of the second year of secondary school in Mashhad in the academic year 1402-1403, and 352 of them were randomly selected. Data collection tools are psychological disturbance scales (DASS; Lovibond and Lovibond, 1995); Alexithymia (TAS; Bagby et al., 1994); Childhood Trauma Questionnaire (CTQ; Bernstein et al., 2003) and Sleep Quality Index (PSQI; Buysse et al., 1989). Mean and standard deviation were used to describe the findings, and Pearson correlation tests and structural equation models were used to infer information using SPSS-27 and AMOS-24 software. The results of this research showed that this research model has a favorable fit and that childhood abuse and alexithymia affect the psychological distress of adolescents both directly and indirectly through the mediation of sleep quality. These results can be used to design interventions aimed at preventing psychological distress<strong>.</strong> https://psychologyj.tabrizu.ac.ir/article_19412_49ec8feae691ff722c304b6a9d0f6d4d.pdf