Dr. Han Berghuis is a clinical psychologist and psychotherapist. He is specialised in the (psycho)diagnostics of personality disorders. He got his PhD in 2014 on a research on main components of personality pathology. This research was closely linked to the Alternative DSM-5 model for personality disorders. Berghuis has been involved in education and giving workshops for more than 20 years in the field of psycho-diagnostics.