Ramón Spaaij is a Senior Research Fellow in the School of Social Sciences at La Trobe University, Australia, and the Amsterdam Institute for Social Science Research, University of Amsterdam. He has lectured at several universities in the areas of sociology, sport studies and conflict studies. Spaaij's main research expertise is in the sociology of sport, social capital, socialization, social exclusion, and terrorism and political violence. He has published nine books including recent titles such as Sport and Social Mobility: Crossing Boundaries (Routledge, 2011) and The Social Impact of Sport: Cross-Cultural Perspectives (edited, Routledge, 2010). He is co-author of the book Trends in Terrorisme (Kluwer, 2003) and has published on various aspects of terrorism and political violence. His work has appeared in a wide range of international media.