(OQ™) Overeating Questionnaire™

By William E. O'Donnell, PhD, MPH and W. L. Warren, PhD


Measures key habits, thoughts, and attitudes related to obesity, allowing clinicians to design individualized weight-loss programs


9 to 98 years

Admin Time

20 minutes




Based on a nationally representative sample of 1,788 individuals

Publish Date



Level C required.
About Qualification Levels


Available in Spanish

Published Translations
Have a Question?

Call 800.648.8857


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Product #: W-451

OQ Kit

Includes 25 AutoScore Answer Sheets; 1 Manual


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OQ AutoScore™ Answer Sheet (Pack of 25)

Show details for OQ AutoScore™ Answer Sheet (Pack of 25)

Product #: W-451A

OQ AutoScore™ Answer Sheet (Pack of 25)


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OQ PC Answer Sheet (Pad of 100)

Show details for OQ PC Answer Sheet (Pad of 100)

Product #: W-451C

OQ PC Answer Sheet (Pad of 100)

For use with the OQ CD


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OQ 25-Use Scoring CD

Show details for OQ 25-Use Scoring CD

Product #: W-451U

OQ 25-Use Scoring CD

PC with Windows 10, 8, 7, Vista or XP. CD-ROM drive and USB port required. Each CD is good for 25 uses. Free U.S. shipping.


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Manuals & Resources

OQ Manual

Show details for OQ Manual

Product #: W-451B

OQ Manual


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(OQ™) Overeating Questionnaire™

(OQ™) Overeating Questionnaire™


Get a relevant psychological profile and personalized plan of action in just 20 minutes

Recent surveys indicate that nearly half of all American children are overweight. While most instruments related to eating behavior focus on bulimia and anorexia, the Overeating Questionnaire (OQ) measures key habits, thoughts, and attitudes related to obesity. Appropriate for individuals as young as 9 years of age, it can be extremely helpful in designing effective individualized weight-reduction programs.

The OQ is an 80-item self-report questionnaire that can be group or individually administered in about 20 minutes. (Items are written at a fourth-grade reading level.) It yields the following scores:

  • Overeating
  • Undereating
  • Craving
  • Expectations About Eating
  • Rationalizations
  • Motivation to Lose Weight
  • Health Habits
  • Body Image
  • Social Isolation
  • Affective Disturbance

The first six scores relate to eating habits and attitudes, while the last four help identify problems that may need to be addressed concurrently with obesity. Two additional scores—Inconsistent Responding and Defensiveness —assess response bias. Norms are based on a nationally representative sample of 1,788 individuals aged 9 to 98. 

Clients trust a treatment plan based on scientifically valid and defensible evidence

OQ scores correlate with other measures of eating-related characteristics, body mass index, health habits, mood disturbance, social functioning, and successful engagement in weight-loss activities. Information generated by the OQ is invaluable in planning effective individualized weight-loss programs. And because the test can be administered and scored by any trained and supervised technician, it is a practical and cost-effective addition to any treatment effort focused on weight loss and related psychological problems. 

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Michael seems to passively accept his weight gain.

What’s behind his apparent apathy?

Michael is a 138-pound, 11-year-old boy whose weight problem has escalated alarmingly over the past 2 years. He believes that obesity “runs in the family.” His mother has observed that he has been “moodier than usual” lately.    

Michael’s pediatrician referred him to a weight-loss program for preteens. There he took the Overeating Questionnaire as part of a routine intake procedure. 

Michael’s high scores on the “Rationalization” and “Affective Disturbance” scales suggest that he attributes his weight to factors other than his own behavior and that mood disturbances divert his attention and energy away from his weight-loss efforts. His high score on the “Motivation to Lose Weight” scale indicates that apathy is not to blame.    

The most important insight Michael’s counselor took away from the OQ profile is that Michael’s eating habits are closely tied to his moods. Michael eats to alleviate stress and loneliness. This knowledge allowed his counselor to design a plan that addresses Michael’s emotional issues, encourages him to find diversions that will help him control his emotional overeating, and teaches him to assume responsibility for whatever successes or failures he may encounter in his effort to shed pounds.

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