Dissociative Identity Disorder

About This Seminar

Dr Richard Mullen’s presentation will cover the history of ideas about Dissociative Identity Disorder along with theories of its causation and how dissociation is measured.

Diagnoses of multiple personality, now dissociative identity disorder, became common in the 1980s and 1990s, amid much dispute regarding its causes and nature. It seems to be on the rise again now. This session will consider the history of dissociative identity disorder and current diagnostic practices and guidelines, and theories regarding its cause.

Recorded live at Ashburn Clinic on the 11th of August 2025.

Presenter’s Bio

Dr Richard Mullen MB. ChB. PhD. FRCPsych

Dr Mullen has been a Consultant Psychiatrist in Dunedin since 1995. He trained in psychiatry in London and in Dunedin where he was a consultant in adult psychiatry in local mental health services. He now mainly does private assessments. He is interested in the history of ideas about psychiatry.