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Nutrients 2018, 10(9), 1306; https://doi.org/10.3390/nu10091306

Beliefs about Binge Eating: Psychometric Properties of the Eating Beliefs Questionnaire (EBQ-18) in Eating Disorder, Obese, and Community Samples

1
School of Psychology, The University of Sydney, Sydney, NSW 2006, Australia
2
Centre for Emotional Health, Department of Psychology, Macquarie University, North Ryde, NSW 2109, Australia
3
School of Medicine, Western Sydney University, Campbelltown, NSW 2560, Australia
4
The Peter Beumont Eating Disorder Service, Royal Prince Alfred Hospital, Sydney, NSW 2006, Australia
5
The Redleaf Practice, Wahroonga, NSW 2076, Australia
6
Mandy Goldstein Psychology, Bondi Junction, NSW 2022, Australia
*
Author to whom correspondence should be addressed.
Received: 30 August 2018 / Revised: 12 September 2018 / Accepted: 12 September 2018 / Published: 14 September 2018
(This article belongs to the Special Issue Eating Disorders and Obesity: The Challenge for Our Times)
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Abstract

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 (n = 498 non-clinical participants, n = 161 participants seeking treatment for an eating disorder, and n = 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. View Full-Text
Keywords: binge eating; questionnaire; psychometric; eating disorders; obesity binge eating; questionnaire; psychometric; eating disorders; obesity
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Burton, A.L.; Mitchison, D.; Hay, P.; Donnelly, B.; Thornton, C.; Russell, J.; Swinbourne, J.; Basten, C.; Goldstein, M.; Touyz, S.; Abbott, M.J. Beliefs about Binge Eating: Psychometric Properties of the Eating Beliefs Questionnaire (EBQ-18) in Eating Disorder, Obese, and Community Samples. Nutrients 2018, 10, 1306.

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