Prof. Thomas Faist PhD heads the research group Sociology of Transnationalization and the Center on Migration, Citizenship and Development (COMCAD) at the Faculty of Sociology at Bielefeld University. Tobias Gehring is doing his PhD at the Faculty of Sociology at Bielefeld University and the Bielefeld Graduate School in History and Sociology (BGHS). Dr. Susanne U. Schultz received her doctorate from the Faculty of Sociology at Bielefeld University. She is a project manager at the Bertelsmann Stiftung and an Associated Research Fellow at the Center on Migration, Citizenship and Development (COMCAD).