Professor, Department of Psychology, University of Florida; Consultant, stopbullying.gov website and the National Anti-bullying Campaign, U.S. Department of Health and Human Services (HHS); Co-Author, "Preventing Youth Violence and Bullying Through Social-emotional School-based Prevention Programs and Frameworks" (2015, Violence: A Global Health Priority); Co-Editor, Youth Suicide and Bullying (2014) and Bullying in North American Schools (2010)