1. School of Psychology, Faculty of Health, Liverpool John Moores University, Liverpool, UK
2. The Manchester Self-Harm Project, Centre for Mental Health and Safety, Division of Psychology and Mental Health, University of Manchester, UK
3. School of Psychology and Computer Science, University of Central Lancashire, UK
4. Imago Training Ltd., Wigan, UK
5. School of Medicine, University of Nottingham, UK
6. Division of Psychology & Mental Health, School of Health Sciences, Manchester Academic Health Sciences Centre, University of Manchester, UK