Presently: Senior Statistician at ZUMA, Mannheim, Germany (1992-)

Previously: Research student and lecturer at the University of Economics in Berlin (1984-1987), Junior Researcher at the Institute of Sociology and Social Policy, Berlin (1987-1991), Visiting Scholar at the University of Michigan (Summer 1992)

Activities in Scientific Societies: Member of the Methodological Section of the German Sociological Association

Current Research Areas: Sampling designs, especially for telephone surveys and for cross-cultural surveys, weighting, design effects

Selected Publications: Journal of Official Statistics, Survey Methodology, Kölner Zeitschrift für Soziologie und Sozialpsychologie, Wiley, Westdeutscher Verlag 

Senior Statistician at ZUMA, Mannheim, Germany (1992-) Research student and lecturer at the University of Economics in Berlin (1984-1987), Junior Researcher at the Institute of Sociology and Social Policy, Berlin (1987-1991), Visiting Scholar at the University of Michigan (Summer 1992) Member of the Methodological Section of the German Sociological Association Sampling designs, especially for telephone surveys and for cross-cultural surveys, weighting, design effects Journal of Official Statistics, Survey Methodology, Kölner Zeitschrift für Soziologie und Sozialpsychologie, Wiley, Westdeutscher Verlag