David Harper is Professor of Clinical Psychology at the University of East London (UEL). He is a clinical psychologist who worked in mental health services in the North West for nearly a decade before moving to UEL in 2000. He completed both his undergraduate psychology degree and postgraduate training in clinical psychology at the University of Liverpool and his PhD (‘Deconstructing Paranoia’) at Manchester Metropolitan University. Since 2014 he has been one of the two Programme Directors of UEL's Professional Doctorate in Clinical Psychology. His co-authored and co-edited book Psychology Mental Health & Distress was a winner of the 2014 British Psychological Society’s book award. He is predominantly a qualitative researcher, developing conceptual and empirical projects from a critical psychology standpoint. His focus is on psychosis (especially paranoia and unusual beliefs), social inequality and mental health, changing attitudes about mental health and investigating how electronic gathering, storage and transmission of personal information is experienced by the public.