Hammad Sheikh is a postdoctoral research fellow at the New School for Social Research and the Center on Terrorism (CUNY). He received a Psycholgie Diplom (equivalent to MSc) from the Free University of Berlin in 2008 and a PhD in social psychology from the New School for Social Research in 2014. Prior to his studies at the New School, he conducted research at the Max-Planck-Institute for Human Development in Berlin, the University College Dublin, and the Free University of Berlin. His research focuses on the psychology of intergroup conflict and intragroup cooperation, and utilizes a diversity of methods including focus groups, interviews, large-scale surveys, and cognitive experiments. He is currently examining the role that religious ritual and sacredness play in creating commitment to group interests, leading to prosocial behaviors, and in the context of intergroup conflict, to political violence.