Dr John Winston Toumbourou BA (Hons), MA, PhD, is Professor and Chair in Health Psychology within the School of Psychology, Faculty of Health, Medicine, Nursing & Behavioural Sciences at Deakin University. He is an Honourary Senior Research Fellow within the Murdoch Children’s Research Institute at the Centre for Adolescent Health (Royal Children’s Hospital Melbourne). John is a founding signatory and has served as Chair of the College of Health Psychologists within the Australian Psychological Society. John's interests include evaluation, drug abuse prevention and treatment, and the role of community, family and peer groups in adolescent health promotion. He has published over 200 articles and 60 referred journal papers. He is nationally and internationally recognised for his contribution to the prevention of harmful adolescent substance use. In 2008 his research was cited by the National Health and Medical Research Council in their decision to amend Australian adolescent alcoho-use guidelines. In 2007 he was selected by the world’s leading medical journal “Lancet” to head a team reporting on strategies to reduce harmful adolescent substance use. In 2006 he received the award for International Collaborative Research from the Society for Prevention Research, the major society for health promotion and prevention researchers in the United States.