I am extremely thankful to so many people along the way, just to name a few: @simonsaysnothin.bsky.social @lorenzspreen.bsky.social @arc-mpib.bsky.social @hertieschool.bsky.social @anaskozyreva.bsky.social @sebstier.bsky.social @seramirezruiz.bsky.social @andyguess.com @small-schulz.bsky.social
02.02.2026 15:34 β π 7 π 0 π¬ 0 π 0
Admin note: if you'd like to reach out - please use my new email address as my MPIB account is no longer in use!! I will also soon advertise a position but feel free to reach out proactively.
02.02.2026 15:34 β π 3 π 0 π¬ 1 π 0
It's hard to put into words how excited I am about this step and I am very much looking forward to working with the students of Goethe university and especially to getting to know many new colleagues at C3S, the political science department and collaborators across the university and region.
02.02.2026 15:34 β π 6 π 0 π¬ 1 π 0
Who we are - Center for critical computational studies
Big news: I started a new position as Professor for Computational Social Science (W1 tenure track) at the Center for Critical Computational Studies (C3S) at Goethe University in Frankfurt am Main!
www.c3s-frankfurt.de/who-we-are#m...
02.02.2026 15:34 β π 93 π 11 π¬ 13 π 1
And... we're off
Join us next Spring at the University of Potsdam for the third Applied Causal Graphs workshop: applied-causal-graphs.de
Now that the date and place are set and two of the keynote speakers are fixed, all we need is an abstract from you.
18.12.2025 18:47 β π 13 π 8 π¬ 1 π 1
Full Professorship (W3) in Machine Learning
Deadline: January 31, 2026
We @uni-konstanz.de are hiring a full professor in machine learning for our MSc program in Social and Economic Data Science: stellen.uni-konstanz.de/jobposting/6...
15.12.2025 14:51 β π 17 π 19 π¬ 0 π 1
Join us in Konstanz! For anyone interested, feel free to DM if you have questions.
17.12.2025 19:13 β π 2 π 1 π¬ 0 π 0
FΓΌr eine deutsche Zusammenfassung, hier ein kurzes Interview beim DLF www.deutschlandfunk.de/online-disku...
11.12.2025 19:36 β π 16 π 8 π¬ 0 π 1
Online political discussions are characterized by a minority of users dominate the discussion, while most remain silent.
Those who perceived a discussion as toxic/polarized tend to remain silent: But toxicity engages power users (namely men interested in politics) www.science.org/doi/10.1126/...
11.12.2025 17:53 β π 23 π 12 π¬ 0 π 2
It's out!!
www.science.org/doi/10.1126/...
Big thank you to my coauthors @small-schulz.bsky.social and @lorenzspreen.bsky.social, and to all participants who discussed 20 political issues over 4 weeks in 6 subreddit, 3 experimental conditions and let us observe.
11.12.2025 10:34 β π 76 π 33 π¬ 4 π 2
Inequalities in online discourse
Whose voices are heard in online discussions? Most people stay silent... and the drama may drive power users to post even more. A Reddit field experiment by
@lfoswaldo.bsky.social @small-schulz.bsky.social
& @lorenzspreen.bsky.social reveals why and explores ways to change it. tinyurl.com/3pwksmpu
10.12.2025 21:30 β π 7 π 2 π¬ 0 π 1
2οΈβ£4οΈβ£ππ Doing something new for Advent this year: one great data journalism piece per day until Dec 24. Iβm teaching a data journalism course @hertieschool.bsky.social next semester, so this is partly selfish homework. But maybe interesting for others too.
30.11.2025 23:02 β π 89 π 20 π¬ 24 π 1
Our survey on research practices in Computational Communication Science is still open for participation!
#CommSky
25.11.2025 12:17 β π 6 π 7 π¬ 0 π 0
the background depicts the proposed amendment, the foreground reads "Open Letter: The Amendment to Article 12, paragraph 5 GDPR in the Omnibus Proposal Undermines Evidence-Based Policymaking"
We've published an Open Letter urging EU policymakers to reject the Digital Omnibus' proposed Amendment to Article 12(5) GDPR, which would undermine citizens' data access rights & the researchers who depend on them for #DataDonation research.
Read & sign: shorturl.at/e1mr4 - your signature matters.
25.11.2025 11:00 β π 8 π 5 π¬ 0 π 4
Christmas markets in Cologne in 2025
Each Christmas tree π shows the location of one of the 9 Christmas markets. I created a Christmas tree flat icon as an SVG and imported it into mapbox.com Studio. Finally, I discovered the particle-based snow setting. β
#30DayMapChallenge Day 21: Icons
21.11.2025 21:24 β π 24 π 6 π¬ 3 π 1
Demokratie: Wenn die Rechte mitregiert, wird sie nicht geschwΓ€cht β im Gegenteil
Eine Untersuchung von 57 LΓ€ndern zeigt: Wenn die Rechte in Verantwortung kommt, gewinnt sie dazu. Daraus lΓ€sst sich fΓΌr Deutschland lernen.
π£ New op-ed in SΓΌddeutsche Zeitung: What the data say about the βBrandmauerβ
I summarize key findings from a study with @anninahermes.bsky.social across 57 democracies
β‘οΈ Far-right parties donβt get weaker in government, they get stronger (~6 points by the next election)
tinyurl.com/4j6jaud2
18.11.2025 20:51 β π 186 π 77 π¬ 3 π 12
wow, thanks a lot for covering this - let me just emphasize that I'd regard this preprint as a conceptual perspective / review article that aims to act as a synthesis if existing evidence (the analysis of the GLES data serves mostly as another empirical illustration)
05.11.2025 19:32 β π 3 π 0 π¬ 0 π 0
One postdoctoral Research Position
Deadline: November 15th, 2025
Join us as postdoc at the Inequality Discourse Observatory at the University of Konstanz: stellen.uni-konstanz.de/jobposting/7...
We will do epic research between Linguistics and Computational Social Science at the Cluster of Politics of Inequality. Feel free to DM if you have any questions.
13.10.2025 15:06 β π 19 π 18 π¬ 0 π 0
Absolutely, I think this paper connects really well to, for example, your work with Claire Robertson
04.11.2025 12:34 β π 2 π 0 π¬ 0 π 0
Attention Authors: Updated Practice for Review Articles and Position Papers in arXiv CS Category β arXiv blog
Another casualty of the LLM revolution.
In "arXivβs CS category, review articles and position papers must now be accepted at a journal or a conference and complete successful peer review."
02.11.2025 04:58 β π 326 π 75 π¬ 8 π 6
Thanks! That's great to hear - and makes me curious to hear more about your project.
31.10.2025 08:26 β π 2 π 0 π¬ 1 π 0
Big thanks to my fantastic coauthors: Will Schulz @small-schulz.bsky.social, Ralph Hertwig @arc-mpib.bsky.social , David Lazer @davidlazer.bsky.social and Sebastian Stier @sebstier.bsky.social !
Feedback very welcome! Now read, share, cite π
30.10.2025 10:53 β π 4 π 0 π¬ 0 π 0
Finally, we move beyond social media research and discuss potential consequences of the production-consumption gap, which results in a remarkable visibility gap, for public opinion more broadly.
30.10.2025 10:53 β π 15 π 6 π¬ 2 π 0
We then discuss methodological challenges this production-consumption gap poses for us, social media researchers, and derive implications for sampling, study design and inference.
30.10.2025 10:53 β π 5 π 1 π¬ 1 π 0
Focusing on political content on social media, we discuss existing evidence on predictors and consequences of this production-consumption gap.
30.10.2025 10:53 β π 3 π 0 π¬ 1 π 0
One phenomenon that is remarkably consistent across platforms, time and contexts: most people lurk, read along, and never really post while a small minority is very active, and very visible β a.k.a. the production-consumption gap.
30.10.2025 10:53 β π 7 π 1 π¬ 1 π 0
We have a new preprint: osf.io/preprints/so...
What have we learned about social media - the constantly moving target of empirical research - over the past decade?
30.10.2025 10:53 β π 84 π 39 π¬ 2 π 4
How common are βsurvey professionalsβ - people who take dozens of online surveys for pay - across online panels, and do they harm data quality?
Our paper, FirstView at @politicalanalysis.bsky.social, tackles this question using browsing data from three U.S. samples (Facebook, YouGov, and Lucid):
07.10.2025 18:49 β π 136 π 54 π¬ 4 π 6
Unfortunately not but (almost) all references are in English
22.09.2025 13:44 β π 0 π 0 π¬ 1 π 0
Assistant Professor and passionate researcher in the field of science and health communication, Department of Communication, Johannes Gutenberg-University, Mainz, Germany
Political Science PhD Student, University of Mannheim.
lwarode.github.io
Assistant prof at the University of Warwick β’ Previously : Max Weber Fellow at the EUI, PhD UMontrealβ’ Political economy, Public Opinion, Political Behaviour, Housing β’ #TeamOM β’ http://alexandrajabbour.github.io
Professor of Dutch Politics at Leiden University | Extremism, populism, radicalism scholar | Board member IISG Amsterdam and Wiardi Beckman Foundation | Allotmenteer | Zeeuws meisje |
I spend too much money on books. And too much time writing them. π¦πΊπ¨π¦.
https://rohanalexander.com
http://tellingstorieswithdata.com
PhD candidate in complex network dynamics at Leiden U and U of Amsterdam. Open Knowledge Foundation Network member.
gamaladel.com
Politics Prof @powimz.bsky.social | parties, elections, attitudes, behaviour | right-wing extremism/populism/radicalism https://www.kai-arzheimer.com/
Institut fΓΌr Politikwissenschaft / Department of Political Science @ JGU Mainz, Germany. https://politik.uni-mainz.de/
Assistant Professor of Data Science @UVA. Network Science, human behavior and the emergent constraints of the organizations and ecosystems we build.
PhD Candidate at @dynamics.bsky.social
Research Associate at the @hertieschool.bsky.social
https://sofiagd8799.github.io
Assistant Professor at the IT University of Copenhagen. Interested in networks, spreading processes, and data science.
Senior researcher at CWTS, Leiden University. Computational social science, science studies, modelling & networks.
John Zwaanstra Professor of International Studies and of Government at Harvard University | International relations π€ political psychology
jkertzer.sites.fas.harvard.edu
Assistant Professor of Computational Social Science at the University of Rostock and @mpidr.bsky.social | Computational Social Science | Migration | Social Networks | Scientometrics | Sociology of Science | https://akbaritabar.github.io/
MIT // researching fairness, equity, & pluralistic alignment in LLMs
previously @ MIT media lab, mila / mcgill
i like language and dogs and plants and ultimate frisbee and baking and sunsets. she/her
https://elinorp-d.github.io
Associate professor, Department of Business and Management // fellow Danish Institute for Advanced Study & Digital Democracy Center, University of Southern Denmark
Associate Professor @ucddublin.bsky.social β’ party competition, public opinion, political communication, computational social science β’ Maintainer @irishpollingind.bsky.social β’ Executive Committee Member @yai.ie
muellerstefan.net
PhD student at Cornell studying intergroup cognition | NSF GRFP fellow | baking enthusiast | she/her
kirstanbrodie.github.io
Political Scientist at JGU Mainz, Germany.
Research on public opinion, elections, parties, and democracy (more at: https://www.nilssteiner.com/).
Spokesperson of the AK Wahlen (@dvpw.bsky.social).
Associate editor at @pvs-journal.bsky.social.
PhD Student @ Princeton CITP | Computational Social Science, NLP, Persuasion, Politics | he/him | https://frasalvi.github.io/