Roger Mulder is Professor of Psychiatry at the University of Otago, Christchurch. His principle research areas are the classification and treatment of personality disorders and mood disorders, long term outcome of mood disorders, psychological effects of disasters, and consult/liaison psychiatry. He is a co-investigator on the Christchurch Health and Development Study, a member of the ICD-11 classification committee, and co-chair of the WPA Section on Personality Disorders. He has published over 280 peer reviewed articles and book chapters. He is editor of Personality and Mental Health and associate editor of ANZJP and the NZMJ.