John Horgan is Director of the International Center for the Study of Terrorism at the Pennsylvania State University, where he is also Associate Professor of Psychology. He is a leading expert on terrorism, and his books include IThe Psychology of Terrorism/I (2005), IThe Future of Terrorism/I (2000, with Max Taylor), and IWalking Away from Terrorism: Accounts of Disengagement from Radical and Extremist Movements/I (2009). He is a member of the editorial boards of multiple journals, including ITerrorism and Political Violence/I, IStudies in Conflict and Terrorism/I, IJournal of Investigative Psychology and Offender Profiling/I, IBehavioral Science of Terrorism and Political Aggression/I, and IDynamics of Asymmetric Conflict/I. Dr. Horgan is a member of the Research Advisory Board of the FBI's National Center for the Analysis of Violent Crime (NCAVC). He has a PhD and BA in Applied Psychology from University College, Cork, and currently lives in State College, Pennsylvania.