Ronald M. Rapee, PhD, is currently professor in the Department of Psychology at Macquarie University in Sydney, Australia, and director of the Centre for Emotional Health. He has been involved in an advisory capacity with the DSM-IV and DSM-V, and he is a member of the US-government-sponsored Project Liberty, which works to develop anxiety management programs for children affected by disasters. He is on the scientific advisory committee for the Swiss Etiological Study of Adjustment and Mental Health, and the editorial board of several international journals. Ann Wignall, M. Psych, is senior clinical psychologist and director of child and adolescent mental health for Northern Sydney Health Service. She founded the Child and Adolescent Anxiety Clinic, Royal North Shore Hospital, and works clinically with children and families with a broad range of anxiety and behavioral disorders.