Dr Steve Moss has worked for 30 years in disability research, initially in the fields of children with visual impairment and childrens motor development, and subsequently in the areas of intellectual disability and mental health assessment. His work on development of the PASADD system, now entitled Moss-PAS (Moss Psychiatric Assessment), is particularly well known, and these assessments are now used in many countries throughout the world. Dr Moss has published over 80 articles, chapters, books and assessments, and has trained several thousand people around the work in use of the Moss-PAS (PAS-ADD) system. He worked for 20 years at the Hester Adrian Research Centre, Manchester University, and later at the Institute of Psychiatry, Kings College London, where he continues to have an honorary post.