Kieron O”Connor, Ph D, is currently director of the OCD Spectrum Study Centre at the University Institute of Mental Health at Montreal, and Centre Integré Universitaire de Santé et de Service Sociaux de L”Est de l”Ile de Montreal. He is also Full Professor at the Psychiatry Department of the University of Montreal and affiliated professor at the University of Quebec. Marc E. Lavoie, Ph D, is a professor of psychiatry and neuroscience at the University of Montréal and is currently head of the Cognitive and Social Psychophysiology laboratory at the research center of the Institut Universitaire en Santé Mentale de Montréal. Benjamin Schoendorff, MA, MSc, is a clinical psychologist and director of the Contextual Psychology Institute in Montreal, Canada.