Professor of Survey Methodology. Research interests encompass all aspects of survey design and data collection, including sampling, weighting, nonresponse, measurement and survey quality. President of the International Association of Survey Statisticians. Editor of "Methodology of Longitudinal Surveys" (Wiley, 2009), "Improving Survey Methods" (Routledge, 2014) and "Advances in Longitudinal Survey Methodology" (Wiley, 2021). Awarded the Royal Statistical Society Guy Medal for services to survey research.
Hannah is a senior research manager at RECSM. She is also an external Ph.D. candidate at Utrecht University, Netherlands. Her research focuses on response quality, particularly in the context of online panels. She holds a Research Master's in Social Science from the University of Amsterdam and has deepened her knowledge in Survey Methods and Statistics in the International Program in Survey and Data Science (University of Mannheim and University of Maryland). Before joining RECSM, Hannah worked for the Secretariat of the Comparative Study of Electoral Systems (CSES) at GESIS – Leibniz Institute for the Social Sciences in Cologne.