Studies: Psychology with a focus on personality psychology and psychological diagnostics, University of Bielefeld; studied abroad at the Université Paris-Nanterre and the University of California at Berkeley, 1992-1997.
Degrees: PhD in psychology (Dr. rer. nat.), 2000; Habilitation, University of Mannheim, 2007.
Current Position: Chair of the Department of Psychology at the University of Mannheim and Director of the Department Survey Design and Methodology at GESIS - Leibniz Institute for the Social Sciences.
Past Positions: Teaching assistant, University of Göttingen, 1997-2000; Research associate, Friedrich-Schiller University Jena, 2000-2002; Project consultant at ZUMA, 2002-2008; national project manager of PIAAC and coordinator of the involvement of GESIS in the international PIAAC-consortium, 2009- .
Main Areas of Research: Development of questionnaires and validation (short scales, cultural adaption); measurement equivalence; effects of varying modes of answering.
