Hammad Sheikh is a postdoctoral research fellow at the New School for Social Research and a visiting scholar at the Centre for the Resolution of Intractable Conflicts (Harry Manchester College, Oxford University). He received a Psycholgie Diplom 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 uniquely brings together field research (e.g., interviews with combatants in war zones) with psychological methods like questionnaires and cognitive experiments. He is currently examining how commitments to groups and values can lead people to become willing to make extremely costly sacrifices for a cause, including fighting and dying for it. His work has been used in reports and briefings for the UN and the FBI among others.