Jeroen Boelhouwerhas done extensive research on the SCP Life Situation Index. Currently works at the Netherlands Institute for Social Research/SCP. Gerbert Kraaykampis professor of empirical sociology in the Department of Sociology, Radboud University Nijmegen, and director of the Nijmegen Institute of Social and Cultural Research (NISCO). Ineke Stoop is senior survey methodologist at SCP and deputy director—Methodological of the European Social Survey.