Lisa Vaccaro is currently a candidate for a Doctor of Philosophy (PhD) at the University of Sydney. She completed undergraduate and began postgraduate studies at Macquarie University - awarded a Bachelor of Arts (Psychology) in 1998 and a Postgraduate Diploma in Psychology in 1999. Under direction of the late Professor of Surgery - Christopher J. Martin - Lisa was employed to assist the development and conducting of world-class clinical research trials.Mairwen Jones is currently Senior Lecturer in Psychology in the Faculty of Health Sciences, The University of Sydney.Ross G. Menzies has been providing CBT for OCD, phobias, anxiety and depression in the inner-west of Sydney for over 15 years. He is currently Associate Professor of Psychology in the Discipline of Behavioural and Community Health Sciences at the University of Sydney.Tamsen St Clare obtained her honours degree in Psychology and her Masters degree in Clinical Psychology from the University of Sydney. She is currently working as a Clinical Psychologist in private practice. She is formerly Senior Clinical Psychologist and Head of the Sydney West Area Health Service's Anxiety Treatment and Research Unit, and Clinical Director of the University of Sydney Anxiety Disorders Clinic.