Staff

The many faces of GESIS

Vita


Higher Education

Since 2022 Ph.D. Candidate Improving Non-Voters' Response Rates, University of Mannheim

10/2019 - 09/2022 M.A. Empirical Research in Democracy, University of Mainz
09/2020 - 02/2021 Political and Social Sciences, Ghent University
10/2015 - 09/2019 B.A. Political Science, University of Hamburg 

Work Experience

Since 2022 Doctoral Researcher: Prediction-based Adaptive Designs for Panel Surveys, GESIS - Leibniz Institute for the Social Sciences

Since 2024 Docoral Researcher: Survey Data Collection and the Covid-19 Pandemic, GESIS - Leibniz Institute for the Social Sciences

Research

Saskia Bartholomäus is a doctoral researcher in the department Data and Research on Society at GESIS - Leibniz Institute for the Social Sciences. Her current research focuses on data quality in social and political science surveys. In her dissertation, she investigates the non-response and attrition bias of non-voters in political science surveys, the resulting limitation of substantive research, and approaches to resolve the issue. In addition to the use of Adaptive Survey Designs, she is interested in imputation and weighting strategies to reduce political science surveys' selection biases.

Publications

Data/Software

Skora, Thomas, Karolina von Glasenapp, Tobias Gummer, Saskia Bartholomäus, and Elias Naumann. 2024. "SDCCP 2 - Survey Design of Longitudinal Surveys Before and During the Covid-19 Pandemic". doi: https://doi.org/10.7802/2759.

Presentation at a conference

Bartholomäus, Saskia. 2024. "Comparing Different Approaches to Reduce Attrition Bias in Political Surveys. Potentials and Risks." Thought Summit on The Future of Survey Science: Cornell University, Ithaca (New York), 2024-09-23.

Bartholomäus, Saskia. 2024. "Increasing Biases in Political Science Surveys due to Negative Survey Experiences: Reasons and Solutions for the Attrition of Politically Disengaged Persons in Probability and Nonprobability-based Panels." DVPW - Methods Section: Annual Conference 2024, Bamberg (Germany), 2024-04-26.

Bartholomäus, Saskia. 2024. "Reducing Political Science Surveys’ Attrition Bias Without Limiting Substantive Research: Potentials of Adaptive Survey Design and Weighting Strategies." PSRT 2024: 8th GESIS Political Science Research Roundtable, Mannheim (Germany), 2024-10-23.

Bartholomäus, Saskia. 2023. "Why Content Matters: Improving Non-Voters’ Survey Experience by Varying the Content of Political Questionnaires." ECPR General Conference 2023, Prague (Czech Republic), 2023-09-08.

Presentation not at a conference

Bartholomäus, Saskia. 2024. "Mitigating the risk of attrition bias by accounting for panelists' topic preferences. Evidence from the GESIS Panel." Social Science Research Colloquium RPTU, Kaiserslauern (Germany), 2024-11-20.