Sebastian Stier

Join the GESIS Panel.dbd Insight Days on February 23–24, 2026 in Mannheim! Learn about fundamentals and best practices for working with the GESIS Panel.dbd and get exclusive access to a closed Call for Study Proposals only for workshop participants!

www.gesis.org/en/gesis-pan...

This is a highly interesting, timely and great initiative - a new diamond OA journal for #replication research! It is interdisciplinary, but #PolSci is specifically invited. Hence, if you or someone you know has an interesting replication paper, do not hesitate to submit!

#ASConference25
Societal Challenges and the important infrastructures for the Social Sciences on the way to get answers. Sebastian Stier shows how to unlock digital behavioral data.

as25.sociology.uni-m...

📢 We're hiring a Doctoral Student in Research Software Engineering for Digital Behavioral Data!
Work at the intersection of computer science and social science, develop innovative tools, and pursue your doctoral degree with us.

👉 Apply here: www.gesis.org/en/institute...

How common are “survey professionals” - 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):

Explaining public preferences for regulating Artificial Intelligence in election campaigns: Evidence from the U.S. and Taiwan The increasing use of Artificial Intelligence (AI) in election campaigns, such as AI-generated political ads, automated messaging, and the widespread …

🧵 New publication: How do people feel about regulating #AI in election campaigns? 🧵

In a new article, @adrauc.bsky.social, @kunkakom.bsky.social, and I examine when and why people support stronger AI regulation in political competition.

www.sciencedirect.com/science/arti...

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📢 We're hiring a Doctoral Student in Research Software Engineering for Digital Behavioral Data!
Work at the intersection of computer science and social science, develop innovative tools, and pursue your doctoral degree with us.

👉 Apply here: www.gesis.org/en/institute...

Call for Submissions: Social Media Access Days Call for Submissions: Social Media Access Days

Social-Media-Daten zwischen Forschung und Infrastrukturen - nachhaltige Archivierung, Erschließung und Bereitstellung: An der @dnb-aktuelles.bsky.social finden vom 17.-19.03.2026 die Social Media Access Days statt. Wir freuen uns über Einreichungen bis zum 31.10.2025. www.dnb.de/DE/Professio...

Screenshot of the article “Open science in democracy research: the research infrastructure ‘Monitoring Electoral Democracy’ (MEDem)” published in European Political Science. The header shows the journal name, DOI link, and the label “DEBATE.” Below, the title is followed by the author list: Hajo Boomgaarden, Alexia Katsanidou, Sylvia Kritzinger, Georg Lutz, Johanna Willmann, and Jakob-Moritz Eberl. The abstract explains the aims of MEDem as a European research infrastructure to make democracy research data FAIR (findable, accessible, interoperable, reusable). Keywords listed include open science, FAIR data, ESFRI roadmap, research infrastructure, democracy research, data harmonization, data linking, and data set search. DOI: https://doi.org/10.1057/s41304-025-00534-8

They say: once there’s a paper 📝, it’s real…
🎉 #MEDem in #EPS @ecpr.bsky.social

The paper outlines how MEDem will strengthen #OpenScience by making data #FAIR in #DemocracyResearch – and how scholars across Europe are joining forces to build a truly open #ResearchInfrastructure ⚙️

Thrilled to share: our Special Issue in Social Science Computer Review (@sscratsage.bsky.social) on digital behavioral data quality is out now. Many thanks to all contributing authers and my co-editors @clauwa.bsky.social and Bernd Weiß:
journals.sagepub.com/doi/10.1177/...

Here is a list that @juliankohne.bsky.social Mareike Wieland, Charlotte de Alwis, and I started a while ago:

toolreview.shinyapps.io/adapted_app/

The new GESIS Panel.dbd Digital Behavioral Data Sample offers for the second time the opportunity to submit studies: www.gesis.org/en/gesis-pan...

Accepted proposals will be fielded in 2026

We are hiring multiple PhD and postdocs for two newly funded projects at the intersection of mental health and political polarization at the CS Dept at Aalto, Finland. The PIs are Juhi Kulshrestha, Talayeh Aledavood, and Mikko Kivelä.

Full call text and link to apply: www.aalto.fi/en/open-posi...

Are you a student in Cologne or near by? Here are some great opportunities to support our computational social science team: [SHK GESIS AppKit (Kennziffer SHK-CSS-32)] www.gesis.org/institut/kar...
[SHK GESIS Web Tracking (Kennziffer SHK-CSS-33)] www.gesis.org/institut/kar...

Portrait of Johannes Breuer + Text "Prof. Dr. Johannes Breuer, New Professor & Head of the Team Research Data & Methods at CAIS"

🎉 As of today, September 1, 2025, Prof. Dr. Johannes Breuer heads the "Research Data & Methods" team at CAIS. Together with the University of Duisburg-Essen, he has been appointed Professor of Digital Social Sciences. 🎉
🔗 www.cais-research.de/en/news/joha...
@johannesbreuer.com @unidue.bsky.social

Beyond a Negativity Bias: Explaining the Consumption of Positive and Negative Political Information Using WebTracking and Experience Sampling Data - Michaela Maier, Jürgen Maier, Lea C. Gorski, Felix ... Negativity and positivity are crucial in political information, yet research often overlooks positive content consumption. This study examines the degree to whi...

New study with Michaela Maier, Lea Gorski & Felix Schmidt! Using web-tracking and experience sampling data we show that German voters are equally exposed to positive and negative information; however the exact relevance varies across channels and methods of data collection.

doi.org/10.1177/1077...

Abstract of the Study

🔍 What triggers anti-minority violence?

📌 In @europeansocreview.bsky.social, we show that soldier funerals as nationalist spectacles increase the likelihood of spontaneous retributive violence against minority members.

📖 doi.org/10.1093/esr/...

📢 New Publication Alert!
Our (@msaeltzer.bsky.social)
latest article, "Issue congruence between candidates' Twitter communication and constituencies in an MMES: Migration as an exemplary case", has just been published in Parliamentary Affairs.
academic.oup.com/pa/advance-a...

#jobs #stellenangebote #GESISjobs #jobfairy
🎓 Join GESIS Cologne as a #Postdoc in Platform Data & Computational Social Science!
💻 Work internationally, shape DSA data access, and develop your research.
Apply now:
www.gesis.org/en/ins...

Fantastic PostDoc opportunity @gesis.org in a stellar team 👇

*JOB* join us at @gesis.org to work on new approaches for making data from online platforms usable for (computational) social science. Feel free to reach out to @sebstier.bsky.social or me for details about this position.

🚀 New postdoc position for Platform Data & Computational Social Science
Join us to drive @gesis.org' efforts around the Digital Services Act (DSA) and conduct research with online platform data
💼 TV-L EG 14 | Location: Cologne
📌 Apply now: www.gesis.org/en/institute...
#DSA #CSS #DataScience

Negative campaigning and electoral mobilization: empirical evidence from German state elections Recent research has been inconclusive about the systemic effects of negative campaigning. The available studies, most of which focus on the United States, either conclude that attack behavior decre...

New research with @sebstier.bsky.social and @monadian.bsky.social. Triangulating turnout data at the constituency level and candidate surveys we find that negative campaigning has a mobilizing effect in German state elections.

doi.org/10.1080/2474...

2 new job opportunities at the @cais-research.bsky.social:
- PhD student, team "Research Data & Methods" stellenangebote.cais-research.de/de?id=f50b76
- Researcher, DFG project "SocEnRep - Automation of Reproducibility in Economics and Social Sciences" stellenangebote.cais-research.de/de?id=f50b76

#jobs #stellenangebote #GESISjobs #jobfairy
Job Opening! We're seeking a Postdoc in Computational Social Science to join our team at GESIS! Apply now:

www.gesis.org/en/ins...

🚨 We're hiring!
Join our CSES Team @gesis.org Cologne as a Senior Researcher. If you’re into comparative electoral research and love diving into data, this is your moment.
Come shape global democracy with us! 🌍📊
www.gesis.org/en/institute...

The German Federal Ministry of Research, Technology and Space announced their shortlist for their prioritization process for large research infrastructures - and we are on it! So keeping fingers crossed that we can build RIDLOP - Research Infrastructure for Data from Large Online Platforms soon.

#Forschungsinfrastruktur #mitGESISindieZukunft
GESIS ist mit dem Konzept #RIDLOP auf der Shortlist für das nationale Priorisierungsverfahren für Forschungsinfrastrukturen!

Ziel: Datenzugang zu großen Online-Plattformen für die Wissenschaft ermöglichen.

Mehr zum Projekt: www.gesis.org/ridlop

Why do people search for individual politicians? Because they (don't) like them. In a new paper we find sympathy/antipathy to be important predictors of political information seeking. We also find searches for female politicians more often concerned with appearance & family. doi.org/10.1177/1461...

Whose approval/disapproval of Trump has shifted the most?

We just posted an interactive on changes in approval for Trump from right before he was inaugurated to the present. We have very large samples (30k), and the interactive allows you to look at changes within very small slices of the public.

www.chip50.org/blog/whose-a...