Iranian adaptation of the Epistemic Trust, Mistrust, and Credulity Questionnaire (ETMCQ): Validity, reliability, discriminant ability, and sex invariance.

Publisher: John Wiley & Sons Country of Publication: United States NLM ID: 101570837 Publication Model: Print Cited Medium: Internet ISSN: 2162-3279 (Electronic) NLM ISO Abbreviation: Brain Behav Subsets: MEDLINE

Original Publication: Hoboken, NJ : John Wiley & Sons

Trust* ; Surveys and Questionnaires*; Humans ; Iran ; Reproducibility of Results ; Male ; Female

Introduction: Epistemic trust, or trust in transmitted knowledge, has been proposed as a critical factor in psychopathology and psychotherapy. This study aimed at evaluating the psychometric properties of the Epistemic Trust, Mistrust, and Credulity Questionnaire (ETMCQ) in Iran.
Method: Data were collected from 906 participants. Along with the ETMCQ, measures of mentalizing, mindfulness, perspective-taking, attachment, emotion dysregulation, and borderline personality disorder were administered. Confirmatory factor analysis and exploratory structural equation modeling (ESEM) were used to determine factorial structure.
Results: The ESEM model showed an acceptable fit and outperformed the confirmatory model. A 14-item version of the ETMCQ was retained after examining item performance. Our findings also established criterion-related validity for mistrust and credulity, an acceptable internal consistency for credulity, discriminant power for mistrust and credulity in detecting positive screens for borderline personality disorder, and measurement invariance across sexes.
Conclusion: This study provides evidence for the cross-cultural applicability of the ETMCQ. Nonetheless, the validity of the trust and internal consistency of the mistrust subscale require particular attention in future research.
(© 2024 The Authors. Brain and Behavior published by Wiley Periodicals LLC.)

The authors have no conflicts of interest to disclose.

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Keywords: Epistemic Trust; Mistrust; and Credulity Questionnaire; borderline personality disorder; epistemic trust; mentalizing

Date Created: 20240307 Date Completed: 20240308 Latest Revision: 20250828

20260130

PMC10918607

10.1002/brb3.3455

38451001