My research interests have meandered along the following lines: (1) How do people process (mis)information and what is the role of source crediblity and media trust? (2) How are political attitudes are affected by media exposure, specifically through web browsing? (3) How do we achieve valid and reliable measurement in political science? My research has used data from online experiments, surveys, social media, trace data, and geospatial administrative data, and has been published in a variety of journals, including Science Advances, PNAS, the Journal of Politics, Political Analysis, Political Behavior, Political Communication, the Journal of Experimental Political Science and the Social Science Computer Review.

Misinformation, fake news and source credibility

"From Alarm to Evidence: What We Actually Know About Foreign Disinformation’s Geopolitical Effects". Work in progress.

"Does School Debating Reduce Vulnerability to Misinformation? A Field Experiment in Poland" with Krzys Krakowski & Davide Morisi. Journal of Politics, 2026.
Publication | Pre-registration | Reproduction code and data

"(Media Attention to) Misinformation Can Undermine Trust in Scientists" with Emma Hoes, Theresa Gessler, Sijia Qian & Magdalena Wojcieszak. Political Behavior, 2025.
Publication | Pre-registration | Reproduction code and data

"Truth and Bias: Left and Right. Testing ideological asymmetries with a realistic news supply". Public Opinion Quarterly, 2023.
Publication | Pre-registration | Reproduction code and data

"When Do Sources Persuade? The Effect of Source Credibility on Opinion Change", with Andy M. Guess. Journal of Experimental Political Science, 2022.
Publication | Pre-registration | Reproduction code and data

"Horseshoe Patterns: Visualizing Partisan Media Trust in Germany", with Paul C. Bauer. Socius, 2021.
Publication | Reproduction code and data

"Believing and Sharing Information by Fake Sources: An Experiment", with Paul C. Bauer. Political Communication, 2021.
Publication | Pre-registration | Reproduction code and data

"Truth and Bias: Robust findings?". 2020.
Working Paper | Reproduction code and data

"An Ocean of Possible Truth: Biased Processing of News on Social Media". 2018.
Working Paper | Reproduction code and data


Media effects and exposure

"Causes of perceived polarization: An over-time analysis of the effects of media coverage of polarization in three countries" with Michael Heseltine, Magdalena Wojcieszak & Ericka Menchen-Trevino. Political Communication, 2025.
Publication | Pre-registration | Reproduction code and data

"Incentivizing news consumption with bots on Twitter", with Hadi Askari, Michael Heseltine, Magdalena Wojcieszak, Ericka Menchen-Trevino, Zubair Shafiq & Anshuman Chabra. PNAS Nexus, 2024.
Publication | Reproduction code and data

"Non-news websites expose people to more political content than news websites: Evidence from browsing data in three countries", with Magdalena Wojcieszak, Ericka Menchen-Trevino, Sjifra de Leeuw, João Gonçalves, Sam Davidson & Alexandre Gonçalves. Political Communication, 2023
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"Null effects of news exposure: a test of the (un)desirable effects of a 'news vacation' and 'news binging'", with Magdalena Wojcieszak, Andreu Casas, Ericka Menchen-Trevino, Sjifra de Leeuw, Alexandre Gonçalves & Miriam Boon. Humanities and Social Sciences Communications, 2022
Publication | Pre-registration | Reproduction code and data

"The (Null) Over-time Effects of Exposure to Local News Websites: Evidence from Trace Data", with Jane Cronin, João Gonçalves, Magdalena Wojcieszak & Ericka Menchen-Trevino. Journal of Information Technology & Politics, 2022
Publication | Reproduction code and data

"Micro Influence and Macro Dynamics of Opinion Formation", with Michael Mäs & Bary Pradelski. 2017
Working Paper


Measurement and digital methods

"LLMs Don’t End Data Science: They Move It to Measurement" Work in progress.

"Survey Professionalism: New Evidence from Web Browsing Data", with Tiago Ventura, Jonathan Nagler, Ericka Menchen-Trevino & Magdalena Wojcieszak. Political Analysis, 2025.
Publication | Reproduction code and data

"Large language models as a substitute for human experts in annotating political text", with Michael Heseltine. Research and Politics, 2024.
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"Statistical analysis of we brosing data: a guide", with Sebastian Stier, Ana S. Cardenal, Andrew M. Guess, Magdalena Wojcieszak & Ericka Menchen-Trevino. Social Science Computer Review, 2024.
Publication | Code guide


Other projects

"Making social science reproducible: A Conceptualization of 'data review' and learnings from its implementation". Review and Resubmit at The American Statistician.

"The impact of citizens’ assemblies on democratic resilience: Evidence from a field experiment" with Thomas Wappenhans, Felix Hartmann & Heike Klüver.
Working Paper

"Who wins? Who runs? Descriptive represenation in the German Bundestag over time" with Sebastian Stier.
Working Paper

"Elusive effects of legalized wolf hunting on human-wolf interactions", with Leandra Merz, Nicolas T. Bergmann, Neil Carter & Jeremy Bruskotter. Science Advances, 2026.
Publication | Reproduction code and data

"Why Do Candidates 'Go Negative'? Unpacking the Mechanisms of Negative Campaigning" with Sebastian Stier, Corinna Oschatz, Alessandro Nai, Jürgen Maier and Nora Kirkizh. Electoral Studies, 2025.
Publication | Pre-registration | Reproduction code and data

"Wolf attacks predict far-right voting", with Anselm Hager, PNAS, 2022
Publication | Pre-registration | Reproduction code and data

"Do theories of European integration shed some light on a possible disintegration?", 2012
Working paper


Chapters

"Google News API" in Paul C. Bauer and Camille Landesvater (2022): "APIs for social scientists: A collaborative review"
Chapter | Repository

"Source Credibility" in Nai, A., Grömping, M., & Wirz, D. (Eds). Elgar Encyclopedia of Political Communication
Chapter


Bernhard Clemm von Hohenberg

Quantitative Political Scientist