مؤلف: Brita Dorer

Timothy P. Johnson, Ph D, Director of the Survey Research Laboratory and Professor of Public Administration, University of Illinois at Chicago. Beth-Ellen Pennell, Director of International Survey Operations at the Survey Research Center, Institute for Social Research, University of Michigan. Ineke A. L. Stoop, Ph D, Head Methodology Department at The Netherlands Institute for Social Research|SCP and member of the Core Scientific Team of the European Social Survey. Brita Dorer, researcher at GESIS – Leibniz Institute for the Social Sciences in Mannheim, Germany and head of the translation team of the European Social Survey (ESS).