You're strongly encouraged to propose your own topic, ideally with a connection to my areas of expertise. That said, finding a focused, feasible research question is one of the hardest parts of the thesis process—many proposals are too broad or ambitious for a master's thesis. To help, here are scoped directions I'd enjoy supervising. Several come with existing data.
Content moderation
Preferences for online content moderation
How does online media use shape preferences for hate speech moderation and regulation? What's the penalty of poor education on being moderated online? Where do people draw the line on what shouldn't be allowed on social media? Data available: a survey of ~19,000 respondents across eleven countries on hate speech moderation, with political preferences, attitudes toward free speech, interactive moderation decisions, demographics, and open-text data for NLP.
Evidence & policy
How policymakers and citizens make sense of scientific evidence
What do policymakers and the public know about data science and AI, and how does it shape their policy preferences? Is there a "myside bias" in accepting scientific evidence? Data available: a survey of government workers and the general population assessing competence in making sense of scientific evidence—with room to collect more observational or experimental data.
NLP & policy advice
Tracing scientific advice in parliamentary discourse (partner: TAB)
In collaboration with the Office of Technology Assessment at the German Bundestag (TAB), trace the semantic footprint of scientific policy advice in political debate. Which NLP approaches—semantic similarity, embedding-based retrieval, corpus comparison—best identify traces of TAB reports in Bundestag discourse? Data available: 1,000+ TAB reports via the KITopen API and Bundestagsdrucksachen via the DIP API. Ideal for students interested in applied NLP in a policy context.
Forecasting
What makes people good (or bad) forecasters?
What's the effect of election forecasts on expectations and voting behavior? How reliable are forecasts of political and economic outcomes made by media pundits? Data available: a pre-election panel survey of 40,000+ respondents from the 2025 German federal election, covering expectations, political preferences, knowledge, and views on polling and forecasting.
Measurement
Measuring the prominence and influence of political elites
How can we measure the visibility and importance of political elites over time and across countries? Data available: the Comparative Legislators Database (67,000+ legislators worldwide, with rich individual-level data) and Wikipedia-based daily attention statistics.
Collect your own data
Collaborative survey project
Co-design a survey to collect your own data on public preferences, attitudes, knowledge, or behavior—survey experiments (framing, exposure, conjoint) very welcome. You get to collect original data; in return, expect real coordination effort and a crash course in the do's and don'ts of survey design and analysis.