A 4pL item response theory examination of perceived stigma in the screening of eating disorders with the SCOFF among college students.

Lucy Barnard-Brak, Zhanxia Yang
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Abstract

We examined the psychometric properties of the SCOFF, a screening instrument for eating disorders, with consideration of the perceived stigma of items that can produce socially desirable responding among a sample of college students. The results of the current study suggest evidence of the sufficient psychometric properties of the SCOFF in terms of confirmatory factor and item response theory analyses. However, two items of the SCOFF revealed that individuals who otherwise endorsed other items of the SCOFF were less likely to endorse the items of Fat and Food. It is hypothesized that this is the result of perceived stigma regarding those two items that prompts individuals to respond in a socially desirable way. A weighted scoring procedure was developed to counteract the performance of these two items, but the psychometric performance was only slightly better and there would be a clear tradeoff of specificity over sensitivity if utilized. Future research should consider other ways to counteract such perceived stigma.Level of evidence Level III: Evidence obtained from cohort or case-control analytic studies.

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在大学生中使用SCOFF筛查饮食障碍时,对感知耻辱感的4pL项目反应理论检验。
我们研究了SCOFF(一种饮食障碍筛查工具)的心理测量特性,并考虑到在大学生样本中对能够产生社会期望反应的项目的污名感。目前的研究结果表明,在验证性因素和项目反应理论分析方面,SCOFF具有足够的心理测量特性。然而,SCOFF的两个项目显示,以其他方式支持SCOFF其他项目的个人不太可能支持脂肪和食物项目。据推测,这是对这两个项目的污名化的结果,促使个人以社会期望的方式做出反应。开发了一种加权评分程序来抵消这两个项目的表现,但心理测量的表现只是稍微好一点,如果使用的话,特异性和敏感性之间会有明显的权衡。未来的研究应该考虑其他方式来抵消这种被认为是耻辱的现象。证据水平III级:从队列或病例对照分析研究中获得的证据。
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来源期刊
CiteScore
6.50
自引率
10.30%
发文量
170
审稿时长
>12 weeks
期刊介绍: Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity is a scientific journal whose main purpose is to create an international forum devoted to the several sectors of eating disorders and obesity and the significant relations between them. The journal publishes basic research, clinical and theoretical articles on eating disorders and weight-related problems: anorexia nervosa, bulimia nervosa, subthreshold eating disorders, obesity, atypical patterns of eating behaviour and body weight regulation in clinical and non-clinical populations.
期刊最新文献
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