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Growing Knowledge in the Social Sciences

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Author: Prof. Dr. Christof Wolf

Christof Wolf is President of GESIS – Leibniz-Institute of Social Sciences and Professor for Sociology at University of Mannheim. He studied Sociology, Economics, Economic and Social History and Statistics at Hamburg University. In 1996 he received his doctorate in sociology at the University of Cologne and was awarded the venia legendi for sociology in 2003. From 2004 to 2015 Christof Wolf was Scientific Director of the department "Monitoring Society and Social Change".

Split Questionnaire Designs as a clever way to make surveys shorter

Long questionnaires are a challenge for respondents and researchers alike. Split Questionnaire Designs (SQDs, Raghunathan and Grizzle, 1995) offer a clever way to make surveys shorter: instead of answering every question, respondents receive only parts of the full questionnaire. But how these parts—or “modules”—are constructed makes a difference for data …

25/11/2025 Dr. Julian Axenfeld

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