I completed a B.Sc (Psych), M.Psychol (both with first class honours), then a PhD in clinical psychology at the University of NSW. Since 2018 I have been a Professor of Psychology in the Graduate School of Health at the University of Technology, Sydney (UTS). I was formerly Associate Professor in Health Sciences at the University of Sydney. In 1991, I was appointed founding Director of the Sydney University Anxiety Disorders Clinic, a post which I held for 20 years. I was also the Chief Consultant Clinical Psychologist to that unit. I was a founding member of the Anxiety Disorders Foundation of Australia (NSW Branch), serving on the Board for two years. I was the past NSW President, and twice National President, of the AACBT. I was the Convenor of the 29th National Conference of the AACBT in Sydney in 2006, and the past editor of Australia’s national CBT scientific journal, Behaviour Change. I was the Convenor and Chair of the 8th World Congress of Behavioural and Cognitive Psychotherapies, which was held in Australia in 2016. In 2019, I was one of two Australians appointed to the founding Board of the World Confederation of Cognitive and Behavioural Therapies (WCCBT).
I am an active researcher with numerous national competitive grants in areas of anxiety and avoidance, the treatment of the phobic disorders, CBT for social anxiety, new treatment programmes for obsessive-compulsive disorder, computerized treatment packages for anxiety disorders, and innovative treatments for child and adult stuttering. I currently hold over $7 million in national competitive research grants. I have produced over 200 international journal manuscripts, books and book chapters and am regularly invited to speak at conferences and leading universities and institutions around the world.