Distinguishing genuine from simulated dissociative identity disorder using the Morel Emotional Numbing Test.

IF 2.7 2区 心理学 Q2 PSYCHIATRY
John-Christopher A Finley, Michelle Barth, Bethany Brand
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引用次数: 0

Abstract

Objective: Few studies have identified validity tests that are appropriate for use in individuals with dissociative identity disorder (DID). This study investigated whether the Morel Emotional Numbing Test (MENT) could distinguish between genuine and simulated DID.

Method: Thirty-five participants with DID diagnosed via a semistructured interview were compared to 88 participants taking an abnormal psychology course who were instructed to simulate DID. Group comparison analyses were conducted to examine differences in the MENT errors. Univariate logistic regression and receiver operating characteristic curve analyses examined how well the MENT errors discriminated between groups and identified a cutoff optimizing sensitivity while maintaining high specificity.

Results: Simulators had significantly more errors across all three MENT sets compared to genuine DID participants. The total number of MENT errors across sets most strongly and significantly predicted genuine versus simulated DID groups. Receiver operating characteristic curve analyses indicated that the MENT could discriminate between genuine and simulated DID with outstanding classification accuracy (area under the curve = .95). A cutoff of ≥ 10 total errors on the MENT yielded an optimal balance of sensitivity (.86) and specificity (.94). However, the previously defined cutoff of ≥ 8 total errors also demonstrated high sensitivity (.87) and specificity (.89).

Conclusions: Findings provide preliminary evidence for the MENT as a validity test for DID populations. Although the commonly used cutoff of ≥ 8 errors on the MENT demonstrated excellent psychometric properties, we recommend using a cutoff of ≥ 10 errors for individuals with DID to minimize the risk of false positives while maintaining strong sensitivity. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

利用莫雷尔情感麻木测试区分真正的分离性身份识别障碍和模拟的分离性身份识别障碍。
目的:很少有研究发现适合用于分离性身份识别障碍(DID)患者的有效性测试。本研究调查了莫雷尔情感麻木测试(MENT)能否区分真正的 DID 和模拟的 DID:方法:35 名通过半结构化访谈确诊患有 DID 的参与者与 88 名参加异常心理学课程的参与者进行了比较,后者接受了模拟 DID 的指导。进行了分组比较分析,以检验 MENT 误差的差异。单变量逻辑回归和接收器操作特征曲线分析检验了 MENT 错误在组间的区分度,并确定了一个既能保持高特异性又能优化灵敏度的临界值:结果:与真正的 DID 参与者相比,模拟者在所有三组 MENT 中出现的错误明显更多。各组的 MENT 错误总数对真实 DID 组和模拟 DID 组的预测性最强、最显著。接收者操作特征曲线分析表明,MENT可以区分真正的DID和模拟的DID,分类准确性极高(曲线下面积=0.95)。MENT 总误差≥ 10 的临界值实现了灵敏度(.86)和特异性(.94)的最佳平衡。然而,之前定义的总误差≥8的临界值也显示出较高的灵敏度(.87)和特异性(.89):研究结果为将 MENT 作为 DID 群体的有效性测试提供了初步证据。尽管MENT常用的误差≥8的分界点表现出了极佳的心理测量特性,但我们建议对DID患者使用误差≥10的分界点,以便在保持较高灵敏度的同时将假阳性的风险降至最低。(PsycInfo数据库记录(c)2024年美国心理学会,版权所有)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
11.20
自引率
3.20%
发文量
427
期刊介绍: Psychological Trauma: Theory, Research, Practice, and Policy publishes empirical research on the psychological effects of trauma. The journal is intended to be a forum for an interdisciplinary discussion on trauma, blending science, theory, practice, and policy. The journal publishes empirical research on a wide range of trauma-related topics, including: -Psychological treatments and effects -Promotion of education about effects of and treatment for trauma -Assessment and diagnosis of trauma -Pathophysiology of trauma reactions -Health services (delivery of services to trauma populations) -Epidemiological studies and risk factor studies -Neuroimaging studies -Trauma and cultural competence
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