Johannes Breuer's Avatar

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

2,666
Followers
2,145
Following
258
Posts
25.09.2023
Joined
Posts Following

Latest posts by Johannes Breuer @johannesbreuer.com

Preview
Lunchtime Talk: Enhancing Replicability in Computational Communication Science – A Proactive Approach - CAIS The emergence of the replication crisis has placed the integrity of research across the social and behavioral sciences under increased scrutiny. While awareness among the community has grown in recent...

Join us for this week’s lunchtime talk on
"Enhancing Replicability in Computational Communication Science" with Prof. Dr. Johannes Breuer & Xinyue Zhao
📅 11 March 2026 | 1:30 – 2:30 PM
📍 at CAIS + Online (contact: kolleg@cais-research.de)
www.cais-research.de/en/event/lun...
@johannesbreuer.com

10.03.2026 10:44 👍 2 🔁 1 💬 0 📌 0
OSF

When you collect data online, are the results from humans or AI? In a project led by Booth PhD student Grace Zhang, we estimate the prevalence of AI agents on commonly used survey platforms:
osf.io/preprints/ps...
🧵

07.03.2026 20:22 👍 107 🔁 50 💬 4 📌 3
A digital CAPTCHA verification window titled "Select all squares with PIPES" against a plain white background. The window contains a 3×3 grid of numbered squares, mixing literal hardware, smoking pipes, and programming syntax.

A digital CAPTCHA verification window titled "Select all squares with PIPES" against a plain white background. The window contains a 3×3 grid of numbered squares, mixing literal hardware, smoking pipes, and programming syntax.

These captchas just keep getting harder #rstats

05.03.2026 15:58 👍 618 🔁 140 💬 8 📌 2

‼️Es ist soweit! Die Wahl des #RatSWD läuft vom 2.-29.3., die Einladung zur online-Wahl ging heute raus.

Für die #Politikwissenschaft kandidieren
@ackermannk.bsky.social,
@wahlforschung.thorstenfaas.de und
Lars Rinsdorf

👉 www.konsortswd.de/ueber-uns/ra...

#PoWi #DVPW #DGfP #DGPuK

02.03.2026 14:19 👍 7 🔁 7 💬 0 📌 0

Congratulations, @philippdarius.bsky.social ! And all the best for the new position!

05.03.2026 21:24 👍 2 🔁 0 💬 1 📌 0
Preview
The effects of Facebook and Instagram political advertisements on the 2020 US election Nature Human Behaviour, Published online: 05 March 2026; doi:10.1038/s41562-025-02329-9To study the effects of political advertising, we conducted a field experiment with over 60,000 participants. Removing political advertisements from the Facebook and Instagram feeds of randomly selected participants before the 2020 US election did not have a detectable effect on political knowledge, polarization, turnout or political participation.

The effects of Facebook and Instagram political advertisements on the 2020 US election

05.03.2026 12:16 👍 15 🔁 11 💬 0 📌 7

This an enormous null effect. Social media ads did nothing in terms of voting.

05.03.2026 21:20 👍 10 🔁 1 💬 0 📌 0
Preview
BahnBet — Bet on German Train Delays Predict Deutsche Bahn delays and win. Real-time prediction markets on ICE, IC & EC train delays.

What I thought was a joke is real: you can now bet on German train delays. bahn.bet

04.03.2026 10:29 👍 197 🔁 77 💬 15 📌 32

⏰ Just a friendly reminder that the application deadline for the "PhD position on Human-Computer Interaction, Artificial Intelligence, and Disinformation" ends on March 1, 2026.

If you know someone in your network who would be a strong fit for this position, please share this opportunity with them.

25.02.2026 07:12 👍 2 🔁 2 💬 0 📌 0
Post image

#MeetTheExperts #mte #KODAQS #Toolbox #TES
Don't miss the talk by our expert Leon Fröhling about the Total Error Sheets for Datasets (TES-D) which offer a structured, template-based tool for documenting datasets collected from online platforms.
Register now: us02web.zoom.us/meet...

03.03.2026 08:00 👍 1 🔁 2 💬 0 📌 0
Scientific career at GESIS
Scientific career at GESIS At GESIS, researchers work in various phases of their scientific careers: as student assistants, doctoral candidates, postdocs, senior researchers, team leaders, and department heads. The institute's goal is to provide its scientific staff with the best possible support in their various career phase

#jobs #stellenangebote #GESISjobs #ComputationalSocialScience
Pursue your scientific career at GESIS!
youtu.be/zMY2zqYFIMg

We offer a job as a Doctoral Researcher in Computational Social Science
(Salary group 13 TV-L, working time 100 %, limited until 31.03.2029):

gesis.jobs.personio....

03.03.2026 13:00 👍 2 🔁 6 💬 0 📌 0

Sharing a great opportunity for those in our field: GESIS is hiring a Doctoral Researcher in Computational Social Science (full-time, funded through March 2029). Excellent place to develop CSS skills in a leading research environment.

#AcademicJobs #ComputationalSocialScience

youtu.be/zMY2zqYFIMg

04.03.2026 11:25 👍 1 🔁 2 💬 0 📌 0
Preview
PhD Position: Factual Belief Polarisation and its Attitudinal Consequences | Radboud University Do you want to work as a PhD at the Nijmegen School of Management? Check our vacancy!

🚨 Job alert! 🚨

We are looking for a PhD candidate for my Vidi project on factual belief polarization and its attitudinal consequences.

The position will be at the Department of Political Science of Radboud University (Netherlands). Check out the full job profile below!

www.ru.nl/en/working-a...

03.03.2026 11:16 👍 14 🔁 20 💬 0 📌 0
Post image

Want to learn about computational social science *for free* and identify new research partners across academic fields? Apply to one of the 2026 Summer Institutes in Computational Social Science (described in yellow in the attached map) here: sicss.io/locations

03.03.2026 15:01 👍 31 🔁 30 💬 0 📌 0
Preview
A Few Claude Skills for R Users – R Works The community has come together to create some great Claude Skills that you can try out today.

I rounded up a few Claude Skills for #RStats users.

Huge thanks to the creators who developed them. They share Skills for everything from tidyverse code to brand.yml files to learning while using AI.

Hope the list is useful, and please let me know what I missed! 🧡

rworks.dev/posts/claude...

03.03.2026 14:05 👍 135 🔁 39 💬 4 📌 4
Preview
Claude Code 27: Research and Publishing Are Now Two Different Things Some Claude Code fan fiction about the economics of publishing with AI agents set in the very near future

This post really put together the pieces in a way that floored me. Everything is about to change and we have to confront that reality causalinf.substack.com/p/claude-cod...

03.03.2026 19:28 👍 29 🔁 10 💬 1 📌 3

Wie heißt die Tageszeitung dort? Rügenpresse! ... Sorry! (dadjokemodeoff)

03.03.2026 16:39 👍 2 🔁 0 💬 1 📌 0

Would definitely read that :-)

02.03.2026 20:36 👍 1 🔁 0 💬 0 📌 0
Preview
Investigating the Use of Large Language Models in Academic Research and Coding (LLM-ARCo) | Dr. Yousef Younes We invite you, if you are a researcher, to participate in our survey on Investigating the Use of Large Language Models in Academic Research and Coding (LLM-ARCo)" 🤖📚, which aims to explore the impact ...

Interesting survey on LLM use for scientific research tasks by researchers from @uniulm.bsky.social: www.linkedin.com/posts/yousef...

02.03.2026 15:02 👍 0 🔁 0 💬 0 📌 0

People will laugh, but this is better than 90% of uni websites in 2026

01.03.2026 18:11 👍 74 🔁 5 💬 8 📌 0
Post image

The data dictionary: A simple but effective way to plan, organize, validate, and document your data.

datamgmtinedresearch.com/document#doc...

01.03.2026 15:53 👍 51 🔁 8 💬 2 📌 1

I really wish it weren’t the case but real world events are making my research uncomfortably relevant. We wrote a paper last year that included a section on some of the concerns about using LLMs in open-ended strategic simulations (aka “wargames”). arxiv.org/abs/2509.17192

01.03.2026 14:01 👍 52 🔁 15 💬 4 📌 1
An image of the schedule with speaker images. You can find the full schedule on tada.cool.

An image of the schedule with speaker images. You can find the full schedule on tada.cool.

🚨 TADA Speaker Series Spring 2026 schedule is here! 🚨

We've assembled a fantastic lineup of researchers exploring the future of survey research in the age of LLMs.

Mar 18 - May 27, online at 17:00 CEST. Join us!

More info & signup: tada.cool

27.02.2026 14:47 👍 36 🔁 20 💬 0 📌 1

Spannend, wie die lüsternen Aussagen eines 29-Jährigen über Minderjährige unter „Boys will be Boys“ abgeheftet werden, während 16-jährige Mädchen als junge Frauen bezeichnet werden, die schon mal erwachsene Männer „bezaubern“. Wer sich entsetzt zeigt, wird als „Sittenpolizei“ beschimpft. Läuft.

26.02.2026 19:21 👍 3616 🔁 806 💬 85 📌 18

(mein Pandemie-Hobby war Bird Watching 😄)

01.03.2026 10:02 👍 2 🔁 0 💬 0 📌 0

Ein Star

01.03.2026 10:00 👍 5 🔁 0 💬 3 📌 0
Post image

New newspaper headline for your Intro to Causal Inference lecture just dropped

27.02.2026 12:57 👍 165 🔁 33 💬 4 📌 7

There's possible reverse causality, there's potential reverse causality, and then there's the fear that young people living with their parents will hurt their job prospects.

28.02.2026 18:06 👍 90 🔁 26 💬 3 📌 1
Post image

📢 Freue mich auf unser Panel "Data, Archive & Tool Demos", das ich mit @strippel.bsky.social, @johannesbreuer.com, @erikkoenen74.bsky.social, Dimitri Prandner, @schwarz3n3gg3r.bsky.social und in Kooperation mit dem @gesis.org Methods Hub organisiere

📅 19.03.2026, 15:30-17:00
👉 lnkd.in/ewyfW-fc

28.02.2026 19:29 👍 2 🔁 2 💬 0 📌 0
Post image

time traveler from 12 months from now just sent me this

27.02.2026 21:25 👍 1618 🔁 206 💬 66 📌 34