Binge Eating Scale (BES)
Binge Eating Scale · Also known as: Binge Eating Scale Gormally, BES screening tool
The BES is a 16-item self-report questionnaire designed specifically to measure the behavioural and emotional features of binge eating in obese and non-obese populations. Developed by Gormally and colleagues in 1982, the BES uses a forced-choice format and focuses on the subjective experience of loss of control, severity of binge episodes, and affective triggers. It is widely used in obesity treatment research and clinical screening for binge eating patterns.
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When to use it
The BES is recommended for screening binge eating in both clinical and research settings, particularly in weight loss treatment programs, obesity clinics, and studies of emotional eating. It is appropriate for adolescents (14+) and adults, with or without obesity. The BES is particularly valuable in identifying binge eating in primary care, where many individuals with binge eating disorder go undetected. It is less appropriate as a diagnostic tool on its own (requires EDE-Q or clinical interview for diagnosis) or as a measure of overall eating disorder psychopathology (it captures binge eating and emotional control but not shape/weight concern or restraint).
Strengths & limitations
- Specific measurement of binge eating severity — captures the loss-of-control and affective dimensions that define binge eating, distinct from simply eating large quantities.
- Forced-choice format enhances clarity and reduces ambiguity compared to Likert-scale questionnaires; respondents select the most applicable descriptor.
- Strong psychometric properties — good internal consistency (Cronbach's α = 0.83–0.89), test-retest reliability (r = 0.87 over 2-week interval), and convergent validity with binge eating diagnosis.
- Practical brevity — 16 items, 5–10 minute completion time, suitable for busy clinical settings and large cohort studies.
- Widely validated in diverse populations — original development in obese samples, extensively replicated in normal-weight and overweight populations, with translations in 15+ languages.
- Does not diagnose binge eating disorder — the BES screens for binge eating severity but does not assess episode frequency, quantity consumed, or distress, all of which are required for DSM-5 diagnosis.
- Forced-choice format may not capture individual nuance — respondents must select a single option, potentially missing complexity in their experience.
- Does not distinguish objective bulimic episodes (large quantity) from subjective bulimic episodes (small quantity perceived as large) — the EDE-Q is superior for this distinction.
- Limited to binge eating assessment — does not measure shape/weight concern, compensatory behaviours, or eating disorder comorbidity.
- Weighted scoring system can be error-prone if administered without a scoring key; automated scoring reduces mistakes but manual calculation risks.
Frequently asked
What is the difference between high BES scores and binge eating disorder diagnosis?
BES measures binge eating severity (loss of control, emotional triggers); diagnosis requires episode frequency (≥1 per week for ≥3 months), objective or subjective large quantity, marked distress, and absence of regular compensatory behaviours (for binge eating disorder specifically). A high BES (≥27) is necessary but not sufficient for diagnosis. Always conduct clinical interview.
I scored my patient as BES = 15. Is this normal?
A BES ≤17 indicates minimal binge eating; this is within non-clinical range. However, if the patient reports subjective distress about eating or emotional eating patterns, do not dismiss it. Low BES scores do not rule out problematic eating patterns that may warrant intervention; clinical judgment and patient report are essential.
My patient has a high BES but normal weight. Could she have binge eating disorder?
Yes. Binge eating disorder occurs across all weight categories. High BES in a normal-weight individual warrants assessment for binge eating disorder, which is associated with health risks (metabolic dysfunction, disordered eating patterns, psychological distress) even without obesity. The EDE-Q and detailed clinical interview are essential for diagnosis.
Can I use BES to monitor treatment response in binge eating disorder?
Yes. BES scores decrease during cognitive-behavioural therapy for binge eating disorder as loss of control and emotional eating diminish. However, combine BES with objective measures: episode frequency (food/mood diary), dietary intake, and quality of life. BES alone does not capture all treatment outcomes.
Sources
- Gormally, J., Black, S., Daston, S., & Rardin, D. (1982). The assessment of binge eating severity among obese persons. Addictive Behaviors, 7(1), 47–55. DOI: 10.1016/0306-4603(82)90024-7 ↗
- Timmerman, G. M. (1990). Binge eating scale: Further assessment of validity and reliability. Journal of Applied Biobehavioral Research, 1(1), 1–12. link ↗
- Celio, A. A., Wilfley, D. E., Crow, S. J., Mitchell, J., & Walsh, B. T. (2004). A comparison of the binge eating scale, questionnaire for eating and weight patterns-revised, and eating disorder examination-questionnaire with instructions (EDE-QI) in the assessment of binge eating. International Journal of Eating Disorders, 36(4), 434–444. DOI: 10.1002/eat.20057 ↗
How to cite this page
ScholarGate. (2026, June 3). Binge Eating Scale. ScholarGate. https://scholargate.app/en/clinical-psychology/binge-eating-scale
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