School of Psychology, The University of Sydney, Sydney, NSW 2006, Australia.
Centre for Emotional Health, Department of Psychology, Macquarie University, North Ryde, NSW 2109, Australia.
Nutrients. 2018 Sep 14;10(9):1306. doi: 10.3390/nu10091306.
Binge eating is a core diagnostic feature of bulimia nervosa, binge eating disorder, anorexia nervosa binge/purge type, and is a common feature of "other specified" and "unspecified" feeding and eating disorders. It has been suggested that specific metacognitive beliefs about food, eating, and binge eating may play a key role in the maintenance of binge eating behaviour. The Eating Beliefs Questionnaire (EBQ-18) provides a brief self-report assessment tool measuring three types of metacognitive beliefs: negative, positive, and permissive beliefs about food and eating. This study aimed to build on past research by validating the factor structure and psychometric properties of the EBQ-18 using both a clinical and non-clinical sample. A sample of 688 participants ( = 498 non-clinical participants, = 161 participants seeking treatment for an eating disorder and = 29 participants seeking treatment for obesity) completed a battery of questionnaires, including the EBQ-18 and other measures of eating disorder symptoms and relevant constructs. A subset of 100 non-clinical participants completed the test battery again after an interval of two-weeks, and 38 clinical participants completed the EBQ-18 before and after receiving psychological treatment for their eating disorder. A confirmatory factor analysis (CFA) was conducted and psychometric properties of this measure were assessed. The results of this study provide support for the three-factor model of the EBQ-18. In addition, the EBQ-18 was found to be a valid and reliable measure, with excellent internal consistency, good test-retest reliability in the non-clinical sample, and also demonstrated evidence of sensitivity to treatment in clinical samples with binge eating pathology. Receiver operating characteristic (ROC) curve analyses were used to identify optimal cut-off scores for the EBQ-18. This study provides valuable information about the utility of the EBQ-18 as a measure for use in both clinical and research settings.
暴食是神经性贪食症、贪食障碍、神经性厌食暴食/清除型、以及“其他特定”和“未特定”进食和饮食障碍的核心诊断特征。有人认为，关于食物、进食和暴食的特定元认知信念可能在暴食行为的维持中起着关键作用。进食信念问卷（EBQ-18）提供了一种简短的自我报告评估工具，用于衡量三种类型的元认知信念：对食物和进食的消极、积极和放任信念。本研究旨在在前人的研究基础上，通过对临床和非临床样本进行验证，构建 EBQ-18 的因子结构和心理测量特性。688 名参与者（=498 名非临床参与者，=161 名寻求进食障碍治疗的参与者和=29 名寻求肥胖症治疗的参与者）完成了一系列问卷，包括 EBQ-18 及其他进食障碍症状和相关结构的测量工具。100 名非临床参与者中的一部分在两周后再次完成了测试，38 名临床参与者在接受心理治疗之前和之后完成了 EBQ-18。进行了验证性因子分析（CFA）并评估了该测量工具的心理测量特性。本研究的结果支持 EBQ-18 的三因素模型。此外，EBQ-18 是一种有效且可靠的测量工具，具有极好的内部一致性，在非临床样本中的重测信度良好，并且在具有暴食病理的临床样本中也显示出对治疗的敏感性。还使用接收者操作特征（ROC）曲线分析确定了 EBQ-18 的最佳截断分数。本研究为 EBQ-18 作为临床和研究环境中使用的测量工具的实用性提供了有价值的信息。
