Sebastian Stier's Avatar

Sebastian Stier

@sebstier.bsky.social

Professor of Computational Social Science @University of Mannheim & Scientific Director Department Computational Social Science @GESIS https://sebastianstier.com

882 Followers  |  221 Following  |  27 Posts  |  Joined: 02.10.2023  |  1.776

Latest posts by sebstier.bsky.social on Bluesky

Post image

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

04.08.2025 07:00 β€” πŸ‘ 5    πŸ” 9    πŸ’¬ 0    πŸ“Œ 0

Fantastic PostDoc opportunity @gesis.org in a stellar team πŸ‘‡

30.07.2025 14:36 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

*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.

29.07.2025 17:21 β€” πŸ‘ 13    πŸ” 12    πŸ’¬ 0    πŸ“Œ 0
Details GESIS Leibniz Institut fΓΌr Sozialwissenschaften

πŸš€ 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
πŸ’Ό TV-L EG 14 | Location: Cologne
πŸ“Œ Apply now: www.gesis.org/en/institute...
#DSA #CSS #DataScience

29.07.2025 06:25 β€” πŸ‘ 44    πŸ” 46    πŸ’¬ 0    πŸ“Œ 2
Preview
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...

28.07.2025 12:34 β€” πŸ‘ 5    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

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

25.07.2025 09:59 β€” πŸ‘ 15    πŸ” 11    πŸ’¬ 1    πŸ“Œ 0
Post image

#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...

17.07.2025 14:45 β€” πŸ‘ 10    πŸ” 7    πŸ’¬ 0    πŸ“Œ 1
Post image Post image

🚨 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! πŸŒπŸ“Š
www.gesis.org/en/institute...

16.07.2025 06:09 β€” πŸ‘ 51    πŸ” 55    πŸ’¬ 0    πŸ“Œ 1

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.

08.07.2025 22:15 β€” πŸ‘ 15    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
Post image

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

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

Mehr zum Projekt: www.gesis.org/ridlop

08.07.2025 12:40 β€” πŸ‘ 6    πŸ” 4    πŸ’¬ 0    πŸ“Œ 1
Post image Post image Post image Post image

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...

27.06.2025 16:00 β€” πŸ‘ 15    πŸ” 6    πŸ’¬ 2    πŸ“Œ 0
Preview
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...

23.06.2025 13:15 β€” πŸ‘ 62    πŸ” 29    πŸ’¬ 4    πŸ“Œ 5

⚑️⚑️⚑️
Interested in…
…negativity, incivility, intolerance?
…comparative and experimental data on the perception and effects of attack politics?
… personality, contextual influences?
Get all this with a discount!
πŸ“šπŸ“šπŸ“šπŸ€©πŸ€©πŸ€©

16.06.2025 14:55 β€” πŸ‘ 15    πŸ” 6    πŸ’¬ 0    πŸ“Œ 0
Post image

Attention please‼️Join the next CS3 Meeting this Wednesday (15:15-16:00 CEST). @johannesbreuer.com (@gesis.org) talks about research ethics and digital data. Sign up by tomorrow evening⬇️

ww3.unipark.de/uc/cs3_meeti...

16.06.2025 06:54 β€” πŸ‘ 5    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
Preview
Using co-sharing to identify use of mainstream news for promoting potentially misleading narratives - Nature Human Behaviour Goel et al. examine why some factually correct news articles are often shared by users who also shared fake news articles on social media.

Goel et al. examine why some factually correct news articles are often shared alongside fake news claims on social media. @pranavgoel.bsky.social @jongreen.bsky.social @davidlazer.bsky.social
www.nature.com/articles/s41...

10.06.2025 16:12 β€” πŸ‘ 9    πŸ” 5    πŸ’¬ 0    πŸ“Œ 0

Congrats!

03.06.2025 17:15 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image

#jobs #stellenangebote #GESISjobs #jobfairy
Our Team Digital Society Observatory in #Cologne is looking for a #SeniorResearcher & #TeamLeader in Computational Social Science #CSS (Salary group 15 TV-L, working time 100%, initially for four years with possible tenure):

gesis.jobs.personio....

22.05.2025 07:30 β€” πŸ‘ 11    πŸ” 13    πŸ’¬ 0    πŸ“Œ 2

Come work in our Computational Social Science department led by @clauwa.bsky.social and @sebstier.bsky.social ! Team lead position, tenure track! @gesis.org

22.05.2025 20:59 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
GESIS Workshop
Design and Methods for Mobile Data Collection
09 to 11 July 2025 | Online
Lukas Otto (GESIS)

GESIS Workshop Design and Methods for Mobile Data Collection 09 to 11 July 2025 | Online Lukas Otto (GESIS)

πŸ“± Interested in collecting data with smartphones? Join this #GESISworkshop with @lukotto.bsky.social @gesis.org
for a hands-on guide to planning, conducting & analyzing mobile, intensive-longitudinal surveys.

➑️ More info & registration: t1p.de/mobile-data-...

14.05.2025 13:38 β€” πŸ‘ 2    πŸ” 2    πŸ’¬ 0    πŸ“Œ 1
Reproducibility & Replicability in Computational Social Science Research Presentation on

Had a great time at the CSS workshop in Mannheim organized by @rubac.bsky.social & @valeriehase.bsky.social. You can find my slides on "Reproducibility & Replicability in Computational Social Science Research" here: doi.org/10.6084/m9.f...
#reproducibility #replicability #computationalsocialscience

16.05.2025 11:30 β€” πŸ‘ 25    πŸ” 6    πŸ’¬ 0    πŸ“Œ 1

If you are at #WebSci2025, join our "Beyond APIs: Collecting Web Data for Research using the National Internet Observatory" - a tutorial that addresses the critical challenges of web data collection in the post-API era.

national-internet-observatory.github.io/beyondapi_websci25/

15.05.2025 21:12 β€” πŸ‘ 23    πŸ” 10    πŸ’¬ 1    πŸ“Œ 0
Preview
Moving towards informative and actionable social media research Social media is nearly ubiquitous in modern life, and concerns have been raised about its putative societal impacts, ranging from undermining mental health and exacerbating polarization to fomenting v...

New preprint with @jbakcoleman.bsky.social @lewan.bsky.social @randomwalker.bsky.social @orbenamy.bsky.social @lfoswaldo.bsky.social where we argue for a complex-system perspective to understand the causal effects of social media on society and for a triangulation of methods
arxiv.org/abs/2505.09254

15.05.2025 06:31 β€” πŸ‘ 77    πŸ” 28    πŸ’¬ 2    πŸ“Œ 3
GESIS Workshop
Adapters: Lightweight Machine Learning for Social Science Research
02 to 04 June 2025 | Hybrid (Cologne | Online)
Julia Romberg, Vigneshwaran Shankaran, Maximilian Maurer (all GESIS)

GESIS Workshop Adapters: Lightweight Machine Learning for Social Science Research 02 to 04 June 2025 | Hybrid (Cologne | Online) Julia Romberg, Vigneshwaran Shankaran, Maximilian Maurer (all GESIS)

Unlock the power of large language models for your research!
Join this #GESISworkshop with Julia Romberg, @vigneshwaran-s.bsky.social, and @mmmaurer.bsky.social to explore adapters β€” an efficient alternative to fine-tuning your models.

πŸ”— Book now ➑️ t1p.de/adapters-lig...

@gesis.org

07.05.2025 13:32 β€” πŸ‘ 6    πŸ” 4    πŸ’¬ 0    πŸ“Œ 2
OSF

Very sad that I can't join #comptext25 this year -.- but for those interested in political psychology, we just published the preprint of my last dissertation paper where we conducted a validation study for measuring politicians' public personality traits using text as data: doi.org/10.31219/osf... πŸ‘‡

26.04.2025 09:54 β€” πŸ‘ 19    πŸ” 5    πŸ’¬ 1    πŸ“Œ 0
Preview
Constituency references in social media: MPs' usage and voters' reaction Social media platforms offer MPs the opportunity to directly signal attention to their local voters in the constituency. And while previous research has linked the strategic use of such local cues in...

πŸ“£ New research in EJPR together with the wonderful @nathaliegiger.bsky.social, @stefaniebailer.bsky.social, T. Turner-Zwinkels & S. Heller:

We find:
1) MPs use more constituency signals while campaigning,
2) voters notice the signals,
3) but don't reward that behaviour.

doi.org/10.1111/1475...

15.04.2025 08:11 β€” πŸ‘ 24    πŸ” 9    πŸ’¬ 0    πŸ“Œ 1

#GORConference #Awards #ResearchExcellence #GESIS #DGOF
🌟 Exciting news from the GOR Conference in Berlin! 🌟

GESIS just won three prestigious awards:

πŸ† @juliankohne.bsky.social for Best Paper
πŸ† Sina Chen and @barbarabinder.bsky.social for the Poster Award

02.04.2025 14:34 β€” πŸ‘ 10    πŸ” 3    πŸ’¬ 2    πŸ“Œ 0
Preview
Digital media – a threat to democracy? The evidence is piling up Digital media are increasingly shaping the political landscape worldwide. A new replication study takes a closer look at earlier research on the influence of digital media on democracy and confirms wo...

Excited about this coverage of our work and the replication by @maxplanck.de with @lfoswaldo.bsky.social @lewan.bsky.social and Ralph Hertwig @arc-mpib.bsky.social

www.mpg.de/24519906/dig...

10.04.2025 15:45 β€” πŸ‘ 36    πŸ” 17    πŸ’¬ 0    πŸ“Œ 2
Post image

1/ Excited to share our new preprint β€œA Collective Field Experiment Disentangling Participation in Online Political Discussions” – osf.io/preprints/so...

01.04.2025 16:35 β€” πŸ‘ 38    πŸ” 14    πŸ’¬ 1    πŸ“Œ 3
Presentation: "Understanding Participation in Web Tracking Studies: A Comparison of Probabilistic and Nonprobabilistic Sampling Strategies"

Presentation: "Understanding Participation in Web Tracking Studies: A Comparison of Probabilistic and Nonprobabilistic Sampling Strategies"

Research by Joachim Piepenburg, @berndweiss.bsky.social, @sebstier.bsky.social, Frank Mangold, Judith Gilsbach and @barbarabinder.bsky.social with GESIS Panel.dbd data at the General Online Research Conference 2025:
www.conftool.org/gor25/index....
#GOR25

31.03.2025 06:06 β€” πŸ‘ 7    πŸ” 4    πŸ’¬ 0    πŸ“Œ 1

πŸ€©πŸ“–
I am so thrilled to see this book taking shape and coming out in July. If you're interested in ❎ negative campaigning, πŸ₯Šincivility, πŸ‘₯ intolerance, and unique data and designs on these topics (comparative experiments (ARG, AUS, GER, USA, ITA), conjoint design, etc.), please consider reading it!

28.03.2025 07:32 β€” πŸ‘ 16    πŸ” 2    πŸ’¬ 3    πŸ“Œ 0

@sebstier is following 20 prominent accounts