Johannes Breuer
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johannesbreuer.com
Johannes Breuer
@johannesbreuer.com

Professor of Digital Social Science @unidue.bsky.social and head of the team Research Data & Methods @cais-research.bsky.social

Interested in digital traces | computational social science | reproducibility | open science | #rstats

www.johannesbreuer.com .. more

Sociology 24%
Political science 24%
Fascinating data set with full Q&A transcripts on “how 1,250 professionals integrate AI into their work and how they feel about its role in their future.”
Interviews were done by Anthropic Interviewer, a #GenAI tool for conducting research interviews at scale:
Anthropic/AnthropicInterviewer · Datasets at Hugging Face
We’re on a journey to advance and democratize artificial intelligence through open source and open science.
huggingface.co
The Nobel Prize committee should announce the World Cup winner tomorrow
Today, we fined X for non-compliance with transparency obligations under the DSA.

We're holding X accountable for:
🔹Deceptive design of its ‘blue checkmark’
🔹Lack of transparency of its advertising repository
🔹Failure to provide access to public data for researchers

link.europa.eu/bcmC87
Christoph M. Schmidt (RWI) wurde zum 8. Präsidenten der Leibniz-Gemeinschaft gewählt. Alexandra W. Busch @leizarchaeology.bsky.social, Albert Sickmann @isas-leibniz.bsky.social und Barbara Sturm @leibnizatb.bsky.social wurden als Vizepräsident:innen gewählt. Herzlichen Glückwunsch!
Zur Mitteilung👇

New paper by @marhai.bsky.social, Philipp Knöpfle, and me in the journal Media Psychology: "Contextual Changes, Credible Conclusions? A Direct and Conceptual Replication of Shen et al.'s (2019) Study on Online Image Credibility"
www.tandfonline.com/doi/full/10....
#CommSky #replication
www.tandfonline.com
🚨 New in Nature+Science!🚨
AI chatbots can shift voter attitudes on candidates & policies, often by 10+pp
🔹Exps in US Canada Poland & UK
🔹More “facts”→more persuasion (not psych tricks)
🔹Increasing persuasiveness reduces "fact" accuracy
🔹Right-leaning bots=more inaccurate

It seems that I have spent quite a bit of time with you this year @nulliusinverba.bsky.social 😊
Mein Top-Podcast 2025
Spotify
www.spotify.com

Danke! 😊 Manchmal kann man mit Vibe Coding auch gute Sachen produzieren 😄

Reposted by Johannes Breuer

Join us for #SIPS2026!

We will meet online (May 6-7, 2026) and in person in Washington, D.C., USA (June 8-10, 2026).

We are looking forward to your proposals, so don't miss the submission deadlines:
📅 January 23, for in-person SIPS 2026
📅 February 27, for online SIPS 2026
SIPS 2026 – June 8-10, 2026
The submission portal for the conference is now open! We invite researchers to submit their contributions for both online and in-person SIPS 2026. We look forward to your participation!
buff.ly

Reposted by Marc Debus

Jobtitel-Generator Edition "Öffentlicher Dienst in Deutschland": jbreuer.shinyapps.io/amtstitel_ge...
Amtstitel-Generator
jbreuer.shinyapps.io
Works the other way around too.

“If I was Jonathan Haidt, how would I destroy the next generation?”
New preprint 🎉 Living systematic reviews ensure evidence stays current osf.io/preprints/ps...

In this brief comment (all four pages are here ⬇️), @iaiversen.bsky.social and I cover the benefits and challenges of living systematic reviews, along with two ways to increase their uptake

🧵 1/8
2️⃣4️⃣🎁🎄 Doing something new for Advent this year: one great data journalism piece per day until Dec 24. I’m teaching a data journalism course @hertieschool.bsky.social next semester, so this is partly selfish homework. But maybe interesting for others too.
Needed - larger samples, more realism about (the lack of) heterogeneous treatment effects:
-"less than a third of proposed hypotheses were supported... the largest predictor of positive exp. results was sample size"
-"moderation hypotheses were rarely significant"
academic.oup.com/poq/advance-...
An Audit of Social Science Survey Experiments
Abstract. Survey experiments have become a popular methodology for causal inference across the social sciences. We study the efficacy of survey experiment
academic.oup.com

Reposted by Johannes Breuer

I had a lot of fun making this choropleth map of property sales prices in Germany.

Predictably, big cities have the highest property prices. This pattern is typical now.

Reposted by Johannes Breuer

Olmo 3 is now available through @hf.co Inference Providers, thanks to Public AI! 🎉
This means you can run our fully open 7B and 32B models — including Think and Instruct variants — via serverless API with no infrastructure to manage.
German academia: great place to work? You should think twice before giving it a try: Permanent positions are very rare, most scholars have to drop out after some precarious years. @dianakwon.bsky.social has written a great piece about this for @nature.com and also talked to yours truly. #IchBinHanna
How to stop the revolving door of German academia
Germany is one of the most popular destinations for students and scholars worldwide, but those pursuing academic careers face significant hurdles to success.
www.nature.com
The true academic method: open 12 papers, read none of them, feel intellectually intimidated
Preprint alert! 🥳

How are social bias and CSS interconnected? 🤔

@aytalina.bsky.social, @janabernhard.bsky.social, @valeriehase.bsky.social, and I argue that social bias shapes CSS as a field and as a methodology. Progress in CSS depends on engaging with both dimensions! osf.io/preprints/so...
OSF
osf.io
Yay! We took the umbrella observed by @jamesheathers.bsky.social et al. (2016), formalized a version of it, and explored what we can learn from it regarding power and heterogeneity analysis. Article now out at BRM: rdcu.be/eRAyW. Many thx to my coauthors @lbnhr.bsky.social and @renkew.bsky.social!
Under my umbrella: Rating scales obscure statistical power and effect size heterogeneity
rdcu.be
And now AI slop is taking a serious bite out of SocArXiv.

Thread:
In light of record submission rates and a large volume of AI-generated slop, SocArXiv recently implemented a policy requiring ORCIDs linked in the OSF profile of submitting authors, and narrowing our focus to social science subjects. Today we are taking two more steps:
/1
Happy to announce the 2nd edition of our Summer School in Computational Social Science that will take place in the beautiful Villa del Grumello on Lake Como between June 22-26, 2026!

*** DEADLINE FOR APPLICATION: February 15, 2026 (firm deadline) ***

More details here:
css2.lakecomoschool.org
In our new tutorial, @meanwhileina.bsky.social and I walk you through meaningful hypothesis testing using a less known form of calculating Bayes Factor.

osf.io/preprints/ps...

People transitioning to Bayes often wonder how to decide if an effect is meaningful or not. Here you go... 1/🧵

TIL today: Demis Hassabis, CEO of Google DeepMind and Nobel Prize Winner in Chemistry (en.wikipedia.org/wiki/Demis_H...) also developed the game "Theme Park" en.wikipedia.org/wiki/Theme_P..., which I spent countless hours on in my youth🤯
Theme Park (video game) - Wikipedia
en.wikipedia.org

Reposted by Johannes Breuer

TWIN4DEM introduces its Advisory Board, composed of leading experts in computational social science, democracy research, and digital ethics. The Board will provide strategic guidance and independent advice throughout the project’s implementation.

You can find more here: lnkd.in/dJDKFNsX
🚨 SynthNet is out 🚨
Researchers propose new constructs and measures faster than anyone can track. We (@anniria.bsky.social @ruben.the100.ci) built a search engine to check what already exists and help identify redundancies; indexing 74,000 scales from ~31,500 instruments in APA PsycTests. 🧵1/3
Job opportunity — Junior Professorship in Psychological Metascience @zpid.bsky.social leibniz-psychology.onlyfy.jobs/job/10kku5n7 h/t @bethclarke.bsky.social

Our survey on research practices in Computational Communication Science is still open for participation!
#CommSky
Within our @meta-rep.bsky.social project on research practices in Computational Communication Science (CCS), we are conducting a survey among CCS researchers. We would be grateful if you could participate (takes 10 to 15 minutes) and/or share the link: www.soscisurvey.de/AutoFrontCCS/
#CommSky
Questionnaire | page 1
www.soscisurvey.de
Working in theory/data-driven social science/methods for computational social science?

The second Italian Conference on Computational Social Science is coming: follow @cs2italy.bsky.social for updates and visit our website cs2italy.org for details.

🚨 Abstract submission deadline: January 15, 2026

Reposted by Johannes Breuer

We’re excited to host the panel “Data, Archive & Tool Demos: Open Research Infrastructures and Resources for Communication and Media Studies” at the 2026 DGPuK conference in Dortmund!

📝Submit your 200–300 word abstract by 19 January 2026
osf.io/8u6gw