Professor Middleton holds appointments as Adjunct Professor, School of Public Health, La Trobe University, and, Associate Professor in Psychiatry, University of Queensland. He has made substantial and ongoing contributions to the bereavement and trauma literatures. He chairs the Cannan Institute. In 1996 he was a principal architect in establishing Australia’s first dedicated unit treating dissociative disorders (the Trauma and Dissociation Unit, Belmont Hospital). He has had substantive ongoing involvement with research, writing, reviewing, editorial board membership, teaching (including workshops and seminar presentations), conference convening and supervision of health and research professionals.