Journal articles

Scharkow, Michael, Frank Mangold, Sebastian Stier, and Johannes Breuer. 2020. “How social network sites and other online intermediaries increase exposure to news.Proceedings of the National Academy of Sciences 117 (6): 2761–2763.

Stier, Sebastian, Nora Kirkizh, Caterina Froio, and Ralph Schroeder. 2020. “Populist attitudes and selective exposure to online news – A cross-country analysis combining web tracking and surveys.” The International Journal of Press/Politics online first. doi:

Keller, Franziska B., David Schoch, Sebastian Stier, and JungHwan Yang. 2019. “Political Astroturfing on Twitter: How to Coordinate a Disinformation Campaign.” Political Communication online first. doi:

Jungherr, Andreas, Ralph Schroeder, and Sebastian Stier. 2019. “Digital Media and the Surge of Political Challengers: Explaining the Political Success of Outsiders in the US, Germany and China.Social Media + Society 5 (3).

Rau, Jan Philipp, and Sebastian Stier. 2019. “Die Echokammer-Hypothese: Fragmentierung der Öffentlichkeit und politische Polarisierung durch digitale Medien?” (The Echo Chamber hypothesis: Do digital media lead to a fragmentation of the public sphere and to political polarization?) Zeitschrift für Vergleichende Politikwissenschaft 13 (3): 399–417.

Stier, Sebastian, Johannes Breuer, Pascal Siegers, and Kjerstin Thorson. 2019. “Integrating Survey Data and Digital Trace Data: Key issues in developing an emerging field”. Social Science Computer Review online first. doi:

Stier, Sebastian, Arnim Bleier, Haiko Lietz, and Markus Strohmaier. 2018. “Election campaigning on social media: Politicians, audiences and the mediation of political communication on Facebook and Twitter.” Political Communication 35 (1): 50–74.

Stier, Sebastian, Wolf J. Schünemann, and Stefan Steiger. 2018. “Of Activists and Gatekeepers: Temporal and Structural Properties of Policy Networks on Twitter“. New Media & Society 20 (5): 1910–1930.

Stier, Sebastian, Lisa Posch, Arnim Bleier, and Markus Strohmaier. 2017. “When populists become popular: Comparing Facebook use by the right-wing movement Pegida and German political parties.Information, Communication & Society 20 (9): 1365–1388.

Stier, Sebastian. 2017. “Internet diffusion and regime type: Temporal patterns in technology adoption.” Telecommunications Policy 41 (1): 25–34.

Schünemann, Wolf J., Stefan Steiger, and Sebastian Stier. 2016. “Transnationalisierung und Demokratisierung politischer Öffentlichkeit über Soziale Medien – ein Politikfeldvergleich.” Zeitschrift für Vergleichende Politikwissenschaft 10 (Suppl. 2): 233–257.

Stier, Sebastian. 2015. “Democracy, Autocracy, and the News: The Impact of Regime Type on Media Freedom.”  Democratization 22 (7): 1273–1295.

Stier, Sebastian. 2015. “Political Determinants of E-Government Performance Revisited: Comparing Democracies and Autocracies.” Government Information Quarterly 32 (3): 270–278.

Schünemann, Wolf J., Stefan Steiger, and Sebastian Stier. 2015. “The Net Neutrality Debate on Twitter.” Internet Policy Review 4 (4).


Stier, Sebastian. 2017. “Internet und Regimetyp – Netzpolitik und politische Online-Kommunikation in Autokratien und Demokratien.” Vergleichende Politikwissenschaft, Band 2. Springer VS: Wiesbaden. Reviewed in Zeitschrift für Vergleichende Politikwissenschaft.

Stier, Sebastian. 2012. “Die Bedeutung des Internets als Medium der politischen Kommunikation in Deutschland und den USA – eine vergleichende Fallstudie.” Studien zur politischen Kommunikation, Band 6. Münster: Lit-Verlag.


Stier, Sebastian, Johannes Breuer, Pascal Siegers, Kjerstin Thorson. 2019. “Integrating Survey Data and Digital Trace Data”. Special Issue in Social Science Computer Review.

Contributions to edited volumes and conference proceedings

Stier, Sebastian, Jürgen Maier, and Corinna Oschatz. 2019, forthcoming. “Die Nutzung sozialer Medien durch Kandidaten im Bundestagswahlkampf 2017”. In Wahlen und Wähler – Analysen aus Anlass der Bundestagwahl 2017, edited by Harald Schoen, and Bernhard Weßels.

Stier, Sebastian, and Andreas Jungherr. 2019, forthcoming. “Digitale Verhaltensdaten und Computational Social Science in der politischen Kommunikationsforschung“. In Politik in der digitalen Gesellschaft, edited by Jeanette Hofmann, Norbert Kersting, Claudia Ritzi and Wolf Schünemann.

Stier, Sebastian. 2019. “Internetfreiheit in Europa” (Internet Freedom in Europe). In E-Government und Netzpolitik im europäischen Vergleich, edited by Wolf J. Schünemann, and Marianne Kneuer, 301–320. Baden-Baden: Nomos.

Stegmeier, Jörn, Wolf J. Schünemann, Marcus Müller, Maria Becker, Stefan Steiger, and Sebastian Stier. 2019. “Multi-Method Discourse Analysis of Twitter Communication”. In Quantifying Approaches to Discourse for Social Scientists}, edited by Ronny Scholz, 285–314. London: Palgrave Macmillan.

Stier, Sebastian. 2017. “Political determinants of media freedom.” In Routledge Companion to Media and Human Rights, edited by Howard Tumber, and Silvio Waisbord, London: Routledge.

Keller, Franziska B., David Schoch, Sebastian Stier, and JungHwan Yang. 2017. “How to Manipulate Social Media: Analyzing Political Astroturfing Using Ground Truth Data from South Korea.” In Proceedings of the 11th International AAAI Conference on Web and Social Media, 564–567. Palo Alto, CA: AAAI Press.

Stier, Sebastian. 2016. “Partisan framing of political debates on Twitter.” In Proceedings of the 8th ACM Conference on Web Science, 365–366. New York, NY: ACM.

Stier, Sebastian. 2016. “Studying the Role of Elites in U.S. Political Twitter Debates.” In 6th Workshop on Making Sense of Microposts @WWW2016, 43–45.

Stier, Sebastian. 2015. “Strukturbedingungen im Online-Wahlkampf: USA und Deutschland im Vergleich.” In Die US-Präsidentschaftswahl 2012, Analysen der Politik- und Kommunikationswissenschaft, edited by Christoph Bieber, and Kamps Klaus, 363382. Wiesbaden: VS Verlag für Sozialwissenschaften.