Document Type : Original Article
Authors
1
Ph.D. Student in Psychology, Education and Psychology Faculty, Shahid Beheshti University, Tehran, Iran.
2
MSc in Clinical Family Psychology, Family Research Institute, Shahid Beheshti University, Tehran, Iran.
3
Associate Professor, Education and Psychology Faculty, Shahid Beheshti University, Tehran, Iran.
4
Assistant professor, Education and Psychology Faculty, Shahid Beheshti University, Tehran, Iran.
Abstract
Aim: This study aimed to investigate the mediating role of dichotomous thinking and social trust in the relationship between insecure attachment dimensions and features of Borderline Personality Disorder (BPD).
Method: The statistical population consisted of university students from 20 provinces in Iran, with data collected from February to March 2021. A correlational design based on structural equation modeling was used, involving 436 university students selected through convenience sampling. Participants completed self-report measures, including the Personality Assessment Inventory-Borderline Scale, Adult Attachment Inventory, Social Trust Questionnaire, and Dichotomous Thinking Inventory. Structural equation modeling was applied to test the proposed model.
Results: The serial mediation model showed that dichotomous thinking mediated the relationship between insecure attachment dimensions and social trust, which in turn predicted features of BPD. The predictor variables explained 4%, 50%, and 60% of the variance in dichotomous thinking, social trust, and BPD features, respectively.
Conclusion: The pathway by which attachment insecurities influence BPD features varies by attachment dimension. Furthermore, social mistrust, rather than dichotomous thinking, serves as a key mechanism through which attachment insecurities contribute to BPD features. Addressing social mistrust may provide a more comprehensive understanding of BPD.
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