About the Authors

Cristiana Duarte

Affiliation Cognitive and Behavioural Centre for Research and Intervention, University of Coimbra, Rua do Colégio Novo, Apartado, Coimbra, Portugal

Marcela Matos

Affiliation Cognitive and Behavioural Centre for Research and Intervention, University of Coimbra, Rua do Colégio Novo, Apartado, Coimbra, Portugal

R. James Stubbs

r.j.stubbs@leeds.ac.uk

Current address: School of Psychology, Faculty of Medicine and Health, University of Leeds, Leeds, United Kingdom.

Affiliations College of Life and Natural Sciences, University of Derby, Derby, United Kingdom, Nutrition and Research Department, Slimming World, Somercotes, Alfreton, Derbyshire, United Kingdom

Corinne Gale

Affiliation Mental Health Research Unit, Kingsway Hospital, Derby, United Kingdom

Liam Morris

Affiliation Nutrition and Research Department, Slimming World, Somercotes, Alfreton, Derbyshire, United Kingdom

Jose Pinto Gouveia

Affiliation Cognitive and Behavioural Centre for Research and Intervention, University of Coimbra, Rua do Colégio Novo, Apartado, Coimbra, Portugal

Paul Gilbert

Affiliation Mental Health Research Unit, Kingsway Hospital, Derby, United Kingdom

Competing Interests

James Stubbs consults for Slimming World through the University of Leeds. Liam Morris is employed by Slimming World. This does not alter our adherence to PLOS ONE policies on sharing data and materials. There are no patents, products in development or marketed products to declare.

Author Contributions

Conceptualization: CD RJS PG MM JPG. Data curation: CD RJS. Formal analysis: CD RJS MM. Funding acquisition: RJS CD. Investigation: CG LM,. Methodology: CD RJS PG MM. Project administration: RJS CD. Resources: RJS CD PG MM. Software: CG LM. Supervision: RJS PG JPG. Validation: CD RJS PG MM. Visualization: CD RJS. Writing – original draft: CD RJS MM PG. Writing – review & editing: CD RJS MM PG JPG.