1. Early Intervention in Psychosis Service, Cumbria, Northumberland, Tyne and Wear NHS Foundation Trust , Gosforth, Newcastle Upon Tyne, NE3 3XT , UK
2. Department of Psychology, University of York , York, YO10 5DD UK
3. Psychosis Research Unit, Greater Manchester Mental Health NHS Foundation Trust , Prestwich, M25 3BL , UK
4. School of Health & Wellbeing, University of , Glasgow Clarice Pears Building, 90 Byres Road, Glasgow G12 8TB UK
5. Department of Clinical Psychology, School of Health in Social Science, The University of Edinburgh, Old Medical School , Teviot Place, Edinburgh, EH8 9AG , UK
6. University Department of Psychiatry, University of Southampton, Academic Centre, College Keep 4-12 Terminus Terrace Southampton SO14 3DT , UK