Presents a short biography of the winner of the American Psychological Association's Award for Distinguished Contributions to Research in Public Policy. The 2012 winner is Dan Olweus for his rigorous scientific research on bullying among children and youth and his early and tireless attention to its public policy implications. Dan Olweus's research on the nature, prevalence, and consequences of bullying and his work to develop and disseminate an evidence-based prevention program provide a model of excellence in the field. His work has played a vital role in the dramatic changes that have occurred in many countries in recent years--from viewing bullying as a normative and accepted part of life at school to recognizing bullying as a pressing public health issue. Olweus's Award citation and a selected bibliography are also presented. (Contains 1 footnote.)