Professor of Survey Methodology, University of Maryland

Université de Neuchâtel

Leland J. and Dorothy H. Olson Professor of Sociology, University of Nebraska-Lincoln

Head of Department at IAB; Professor for Survey Methodology, University of Bamberg

Institute for Employment Research, LMU Munich, University of Mannheim

independent

Universität Mannheim

University of Michigan

GESIS Leibniz Institute for the Social Sciences

Assistant Professor of Statistics, Forman Christian College (A Chartered University)