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Updated: May 25, 2026

Control of Eating Behavior Using a Novel Feedback System
Published on: May 8, 2018
Online cognitive-behavioural treatment of bulimic symptoms: a randomized controlled trial
Jeroen Ruwaard1, Alfred Lange, Janneke Broeksteeg
1Department of Clinical Psychology, University of Amsterdam, Amsterdam, The Netherlands. j.j.ruwaard@uva.nl
Background:
Manualized cognitive-behavioural treatment (CBT) is underutilized in the treatment of bulimic symptoms. Internet-delivered treatment may reduce current barriers.
Objective:
This study aimed to assess the efficacy of a new online CBT of bulimic symptoms.
Method:
Participants with bulimic symptoms (n = 105) were randomly allocated to online CBT, bibliotherapy or waiting list/delayed treatment condition. Data were gathered at pre-treatment, post-treatment and 1-year follow-up.
Outcome Measures:
The primary outcome measures were the Eating Disorder Examination Questionnaire (EDE-Q) and the frequency of binge eating and purging episodes. The secondary outcome measure was the Body Attitude Test.
Results:
Dropout from Internet treatment was 26%. Intention-to-treat ANCOVAs of post-test data revealed that the EDE-Q scores and the frequency of binging and purging reduced more in the online CBT group compared with the bibliotherapy and waiting list groups (pooled between-group effect size: d = 0.9). At 1-year follow-up, improvements in the online CBT group had sustained.
Conclusion:
This study identifies online CBT as a viable alternative in the treatment of bulimic symptoms.
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