Peter Kinderman is Professor of Clinical Psychology and Head of the Institute of Psychology, Health and Society at the University of Liverpool.He is a former member of the Department of Health's Mental Health Advisory Board and is currently a member of the Office for National Statistics' Technical Advisory Group for the measurement of national well-being. Peter is also a consultant to the BBC Headroom campaign and has contributed to several broadcasts in the field of mental health, most notably hosting a two-episode Horizon piece exploring the invalidity of diagnosis.