1. Centre for Educational Development, Appraisal and Research (CEDAR) University of Warwick Coventry CV4 7AL UK
2. Learning Disability Services Berkshire Healthcare NHS Foundation Trust 3 Floor, Fitzwilliam House, Skimped Hill Lane Bracknell RG12 1BQ UK
3. Coventry and Warwickshire Partnership NHS Trust, Rainbow Unit Brooklands Hospital Marston Green Birmingham B37 5RY UK
4. School of Psychology Aston University Birmingham UK