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Updated: Jun 8, 2026

A Computer-Based Platform for Aiding Clinicians in Eating Disorder Analysis and Diagnosis
Published on: May 10, 2022
Is decision making really impaired in eating disorders?
Sébastien Guillaume1, Caroline Ngo Ton Sang, Isabelle Jaussent
1University of Montpellier, Inserm, Montpellier, France. guillaumesebastien@ymail.com
This study found no significant differences in decision-making abilities among individuals with anorexia nervosa or bulimia nervosa compared to healthy controls. Findings suggest previous observations of impaired decision-making in eating disorders may be linked to other clinical factors.
Area of Science:
- Neuroscience
- Psychiatry
- Clinical Psychology
Background:
- Previous research suggests decision-making deficits in eating disorders.
- Existing studies are limited by small sample sizes and specific population focus.
Purpose of the Study:
- To confirm prior findings on reduced decision-making in eating disorders.
- To investigate the relationship between decision-making and eating disorder dimensions.
Main Methods:
- The Iowa Gambling Task (IGT) assessed decision-making in anorexia nervosa (n=49), bulimia nervosa (n=38), and healthy controls (n=83).
- Patients were euthymic and medication-free.
- Eating Disorder Inventory-2 and Eating Attitude Test evaluated clinical dimensions.
Main Results:
- No significant differences in IGT performance were found between eating disorder patients and controls.
- No differences were observed between restrictive and purging subtypes of anorexia nervosa.
- IGT performance did not correlate with eating disorder questionnaire scores.
Conclusions:
- The study does not support the hypothesis of reduced decision-making in patients with eating disorders.
- Observed decision-making alterations may be associated with other clinical characteristics.
- Further research is needed to definitively conclude on decision-making in eating disorders.
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