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Introduction: In recent years, the concept of epistemic trust has emerged as a critical factor in understanding psychopathology, particularly within the context of personality disorders. A self-report instrument, the Epistemic Trust, Mistrust, and Credulity Questionnaire (ETMCQ), has demonstrated its validity among English and Italian adult populations. However, extending its applicability to adolescents is essential for comprehending the role of epistemic trust in the development of mental disorders. The aim of this study was to validate the ETMCQ within the Italian adolescent demographic. Methods: Data were gathered from a wide selection of middle and high schools across Italy. The data collection started on 01/03/2022 and ended on 30/06/2022. Besides the ETMCQ (Study 1 = 662 participants, 12–18 years old, M = 15.56, SD = 2.20; 324 females, 338 males), we also administered other self-report instruments measuring mentalization, emotional dysregulation, general levels of psychopathology, and interpersonal trust in a smaller groups (Study 2 = 417 participants, aged from 12–19 years old, M = 15.64; SD = 2.08; 249 females, 168 males). Results: Our findings provide empirical validation for the theoretical framework concerning the role of epistemic trust in psychological functioning and substantiate the validity of ETMCQ as a measure to assess it among teenagers. Conclusions: The ETMCQ is a valid and promising instrument for adolescent populations; its ease and brevity of administration could make it a valuable tool both in clinical and research contexts, shedding light on the role of epistemic trust in mental health. [ABSTRACT FROM AUTHOR]

ObjectiveMethodResultsConclusionNo systematic review was identified investigating the influence of perceived therapist credibility on treatment outcomes. Extant treatment credibility reviews have focused on early perceptions without considering influence of various therapy phases. This study aimed to examine the relationship between perceived treatment and therapist credibility and treatment outcomes, while considering the timing of the credibility assessment as a potential moderator.Articles published in English peer-reviewed journals containing at least one quantitative measure of credibility and treatment outcome regarding face-to-face therapist-delivered interventions were eligible. PsycINFO, MEDLINE and Embase online databases were last searched on April 5th, 2023, and the Effective Public Health Practice Project tool was used to assess the study quality. Correlations between treatment credibility and outcomes, and therapist credibility were calculated separately.Analysis of 27 studies revealed a positive association between perceived treatment credibility and treatment outcome (r = 0.15,95%CI = 0.09,0.21,p < 0.001,n = 2061). Nine studies showed a strong association between perceived therapist credibility and outcome (r = 0.35,95%CI = 0.18,0.51;p < .001,n = 1161). No significant moderator found in both meta-analyses.Findings suggest that clients’ perceptions of higher credibility – whether concerning the treatment or the therapist – are associated with better therapeutic outcomes. Constraints in inclusion criteria and the small sample size in eligible studies were notable limitations. [ABSTRACT FROM AUTHOR]

Building on the notion of epistemic trust as facilitating social learning, in this article we clarify how interventions from mentalization-based treatment (MBT) for borderline personality disorder generate this process. We suggest first that being mentalized is a critical cue in interactions to establish epistemic trust and second that epistemic mistrust may represent a final common pathway through which aversive relational experiences in the past may exert their influence on treatments—both as a disposition of the patient and as a characteristic of the therapist-patient encounter. By charting MBT interventions from the initial assessment and formulation, through individual and group therapy sessions, to re-engaging with the wider social environment, we examine how each of these can establish a "we-mode," an interpersonal experience associated with being mentalized that unlocks the barrier posed by epistemic vigilance. In addition, implications for relational mentalizing and rupture and repair within the therapeutic relationship are discussed. [ABSTRACT FROM AUTHOR]