Professor of Politics, Center for Social Media and Politics, New York University

Professor of Sociology and Political Science, University of California, Irvine

Professor of sociology

Professor of Political Science, University of North Texas

Professor of Political Studies and Sociology, University of Cape Town

University of Konstanz

Professor of Political Science, Hochschule Magdeburg-Stendal

Professor of Cognitive Psychology, School of Experimental Psychology, University of Bristol

Professor of Social Change and Conflict, Sociology, VU University Amsterdam

President and Professor of Sociology, Misericordia University