Prof. Dr. Jan W. van Deth is Professor of Political Science and International Comparative Social Research. His main areas of research include political culture, social change and comparative research methods. He was director of the Mannheim Centre for European Social Research (MZES), head of the international network of Citizenship, Involvement, Democracy (CID) and Book Series Editor of the European Consortium for Political Research (ECPR). He is inter alia Corresponding Member of the Royal Netherlands Academy of Arts and Sciences and coordinator of the German Coordination Team for the European Social Survey. His most recent book publications include: Comparative Polititcs: The Problem of Equivalence. Colchester: ECPR Press, 2013.