The many faces of GESIS
Vita
Sina Chen earned her PhD (Dr. rer. soc.) in 2024 from the Graduate School of the Social and Behavioural Sciences (GSBS) at the University of Konstanz with her dissertation "Contributions to Understanding Pre-Election Poll Accuracy: A Cross-Election Perspective." Previously, she completed both her M.Sc. in Social and Economic Data Science and her B.A. in Politics and Public Administration with a focus on survey research at the University of Konstanz.Service
- Digital behavioural data in surveys
Research
- Pre-Election Poll Accuracy
- Bayesian Statistics
- Hierarchical Multilevel Modeling
- Data Linkage
Publications
Journal article
Chen, Sina, John Körtner, Jens Wiederspohn, and Peter Selb. 2025 (Forthcoming). "Electoral predictors of polling errors." Journal of Politics 2025: . doi: https://doi.org/10.1086/736694.
Selb, Peter, Sina Chen, John Körtner, and Philipp Bosch. 2023. "Bias and Variance in Multiparty Election Polls." Public Opinion Quarterly 87 (4): 1025-1037. doi: https://doi.org/10.1093/poq/nfad046.
Chen, Sina, and John Körtner. 2022. "Did “Trumpists” Perform Worse in US Senate Election Polls?" Significance 19 (3): 28-31. doi: https://doi.org/10.1111/1740-9713.01651.
Presentation at a conference
Chen, Sina, and Barbara Binder. 2025. "Who Donates Their Google Search Data? Participation in a Data Donation Study during the 2025 German Federal Election." General Online Research Conference (GOR), 2025-03-31.
Chen, Sina, John Körtner, Jens Wiederspohn, and Peter Selb. 2023. "Electoral predictors of polling errors." 2023 American Political Science Association Annual Meeting & Exhibition, 2023-08-31.
Chen, Sina. 2020. "Political Predictors of Polling Errors: Campaigns and Poll Accuracy." American Political Science Association Annual Meeting & Exhibition, 2020-09-01.