مدل ساختاری ارتباط بین دلبستگی ناایمن و رفتارخودجرحی در نوجوانان با رگه های اختلال شخصیت مرزی: نقش میانجی فقدان لذت جویی و راهبردهای منفی کنترل فکر

وحید  کوهی; فریبا حسنی; محمد  محمدی; افسانه  قنبری پناه

Authors

Vahid Kouhi Department of Psychology, CT.C., Islamic Azad University, Tehran, Iran Author https://orcid.org/0000-0002-5381-0280
Fariba Hassani Department of Counseling, CT.C., Islamic Azad University, Tehran, Iran. https://orcid.org/0000-0001-6807-1516
Mohammad Mohammadi Department of Education and Counseling, CT.C., Islamic Azad University, Tehran, Iran Author https://orcid.org/0000-0002-9437-6150
Afsaneh Ghanbari Panah Department of Education and Counseling, CT.C., Islamic Azad University, Tehran, Iran Author https://orcid.org/0000-0003-2395-5769

Keywords:

Self Injurious Behavior, Insecure Attachment, Anhedonia, Negative Thought Control Strategies, Borderline Personality Traits

Abstract

Introduction and Aim: Self-injurious behavior is common among adolescents with borderline personality traits, and insecure attachment may contribute to its development through psychological mechanisms such as anhedonia and negative thought control strategies. This study aimed to investigate the structural model of the relationship between insecure attachment and self‑injurious behavior in adolescents with borderline personality traits, focusing on the mediating roles of anhedonia and negative thought‑control strategies.

Methodology: The research was conducted as a descriptive‑correlational study. The statistical population included all adolescents enrolled in schools in the cities of Khoy and Chaypareh in 2025. The sample consisted of 380 students with a history of self‑injury, selected through purposive sampling. Data were collected using the Millon Clinical Multiaxial Inventory‑III (MCMI‑III), the Self‑Harm Inventory (SHI), the Attachment Style Scale (ASS), the Snaith–Hamilton Pleasure Scale (SHAPS), and the Thought Control Questionnaire (TCQ). Data analysis was performed using Pearson correlation and structural equation modeling in SPSS (version 26) and AMOS (version 24).

Findings: Results indicated that the direct effect of insecure attachment on self‑injurious behavior was not significant. However, insecure attachment had significant direct effects on anhedonia (β=0.299) and negative thought‑control strategies (β=0.373), and both anhedonia (β=0.338) and negative thought‑control strategies (β=0.333) had significant direct effects on self‑injurious behavior. Additionally, the indirect effects of insecure attachment on self‑injurious behavior through anhedonia (β=0.105) and negative thought‑control strategies (β=0.135) were significant.

Conclusion: Overall, the findings indicate that insecure attachment is indirectly associated with self‑injurious behavior in adolescents by increasing anhedonia and negative thought‑control strategies.