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CREDO was established in 1981. The main focus of its research is on the treatment of eating disorders. More recently, it has also developed methods to facilitate the dissemination of effective psychological interventions. It is in the process of creating a digital treatment for eating disorders (CBTe).


CREDO developed the three leading treatments for adults with eating disorders, all of which have been endorsed by NICE: cognitive behaviour therapy for bulimia nervosa (NICE, 2004); enhanced CBT for eating disorders, CBT-E (NICE, 2017); and guided self-help (NICE, 2017).

CREDO has developed a direct-to-public digital treatment for people with eating disorders (Digital CBTe).  It is moving the focus of its work onto cases in the community. The goal is to detect cases early and intervene promptly. To this end, CREDO aims to develop a suite of digital interventions designed for large-scale, direct-to-user, delivery. Digital CBTe is part of this wider goal.  For full details visit

CREDO developed the most widely used measures of eating disorder features: the Eating Disorder Examination interview (EDE), the Eating Disorder Examination questionnaire (EDE-Q), and the Clinical Impairment Assessment (CIA).  

Recently, CREDO devised a scalable way of training clinicians to deliver evidence-based psychological treatments.  This has proved popular and effective.  It provides a means of training almost unlimited numbers of geographically dispersed therapists at low cost, thereby overcoming several obstacles to the dissemination of psychological treatments. Find out more about web-based training for CBT-E and Behavioural Activation here.

CREDO has close collaborative links with Professor Vikram Patel's team in India.  It has assisted in the development of two psychological treatments, one for depression and the other for harmful drinking.  Both are delivered by lay counsellors and both have proved remarkably effective given their low intensity.  

CREDO has ongoing strong links and collaborations with international CBT-E colleagues, including Professor Zafra Cooper (US), Dr Riccardo Dalle Grave and his group (Italy) and Dr Suzanne Straebler (US). 

The CREDO Contributors' Group is for individuals who are interested in our work, including people with lived experience of eating disorders, members of the public, and professionals with an interest.  People in our Contributors' Group may be invited to participate in future research and consultation if they wish.  Join our Contributors' Group by emailing



The CREDO team

Selected publications

Related research themes