Johannes Breuer

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

2.9K followers2.4K following424 posts

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Mark Chin
@mememedianmode.bsky.social

doi.org/10.1162/REST... "Online experiments have surged in popularity, but how credible are their published results? We examine the universe of hypotheses tested on Amazon Mechanical Turk ... We find evidence of widespread p-hacking, publication bias, and under-powered studies."

Johannes Breuer reposted

Jakob-Moritz Eberl
@jamoeberl.bsky.social

We often don't know which data, media sources or analytical tools already exist, let alone whether we can access, share the access, and thus make the data reusable. In our new open-access paper, we explain how @medem.bsky.social aims to change that. 🧵

doi.orgMonitoring Electoral Democracy: Discovering and Reusing Text and Multimedia Data for Political Communication Research | Article | Media and CommunicationJakob-Moritz Eberl, Jana Bernhard-Harrer, Mariken van der Velden, Sofia Gil Clavel, Paul Balluff, Johannes B. Gruber, Noëlle S. Lebernegg, Kasper Welbers, Marvin Stecker, Claes Holger de Vreese, Woute...

Johannes Breuer reposted

Jakob-Moritz Eberl
@jamoeberl.bsky.social

Replying to @jamoeberl.bsky.social

Special thanks also to the special issue editors @sfuerst.bsky.social, @johannesbreuer.com, @erikkoenen74.bsky.social, @dimitriprandner.bsky.social, @schwarz3n3gg3r.bsky.social, & @strippel.bsky.social who really care about #research #infrastructures. 🤗 Check out the whole special issue here:

cogitatiopress.comOpen Research Infrastructures and Resources for Communication and Media StudiesThematic Issue, Vol 14 (2026)

Johannes Breuer reposted

Leibniz-Institut für Medienforschung | Hans-Bredow-Institut
@bredowinstitut.bsky.social

📢 Neue Studie für die @fesonline.bsky.social erschienen: „Netzwerke der Meinungsbildung“ 🔎 Die Studie von @azadekakavand.bsky.social, @pekasen.eurosky.social und @janschmidt.bsky.social untersucht Kommunikationsdynamiken im Umfeld der Bundestagswahl 2025 anhand von drei Fällen. 👉 t1p.de/nvmlt

t1p.deNetzwerke der MeinungsbildungDigitale Medien verändern politische Debatten grundlegend. Die Studie zeigt an drei Fällen, wie sie demokratische Beteiligung fördern – zugleich aber Polarisierung, Ausgrenzung und extremistischen Nar...

Johannes Breuer reposted

Dan Quintana
@dsquintana.bsky.social

New preprint! Universities increasingly expect academics to practise open science. But is it rewarded when hiring? We analysed 1,356 academic job ads from Norwegian institutions and found that <5% of ads mentioned open science as a required or desired qualification osf.io/preprints/ps...

Johannes Breuer reposted

The {gt}/great_tables Packages
@gt-package.bsky.social

Great Tables v1.1.0 is out, three weeks after v1.0.0. The two releases add fraction and chemical formula formatters, value-based styling, multi-column stubs, decimal alignment, diverging and row-wise data_color(), and so much more. Here's a post: opensource.posit.co/blog/2026-10... Check it out!

opensource.posit.coGreat Tables `v1.0.0` and `v1.1.0`: new formatters, conditional styling, multi-column stubs, and richer color scalesGreat Tables reached v1.0.0 with new formatters for fractions, chemical formulas, alphabetical indices, and links, along with value-based styling through tab_style_body(). The v1.1.0 release that foll...
Johannes Breuer
@johannesbreuer.com

New paper with Philipp Knöpfle and @marhai.bsky.social "Just redo it? An assessment of study attributes and open science practices affecting the potential reproducibility and replicability of research in Computational Communication Science" doi.org/10.5117/CCR2...

doi.orgJust redo it? An assessment of study attributes and open science practices affecting the potential reproducibility and replicability of research in Computational Communication Science | Amsterdam Univ...Abstract This study examines factors that affect the potential reproducibility and replicability of research in Computational Communication Science (CCS). Through a systematic literature review and co...

Johannes Breuer reposted

DVPW
@dvpw.bsky.social

Did you know? There are more than 50 panels in English open for paper proposals for the #dvpw2027 #Convention in Leipzig next year! Check them out 👉 www.dvpw.de/dvpw2027/en/... & submit your paper proposal by 31 October 👉 meine.dvpw.de/civicrm/kong... #PolSci #PoliticalScience #CfP

DVPW@dvpw.bsky.social

DVPW-Kongress 2027 #dvpw2027 "Welt im Umbruch. Politikwissenschaft auch?" 30. Wissenschaftlicher Kongress der DVPW, 7.-10.9.2027, Universität Leipzig Alle Infos 👉 www.dvpw.de/dvpw2027 #PoWi #Politikwissenschaft

Johannes Breuer
@johannesbreuer.com

I was in Vienna for a little over 24hrs and am very satisfied with my intake of "süße Mehlspeisen": I had Kaiserschmarrn, Apfelstrudel, and Topfenknödel. I am less satisfied with my coffee intake: I had no Melange, Einspänner or Kapuziner. Gives me yet another reason to come back...

Johannes Breuer reposted

Florian Keusch
@floriankeusch.bsky.social

I will start a new group at @wuvienna.bsky.social next spring and am recruiting. - Assistant Professor (non-tenure track) Social Data Science tinyurl.com/ykfsctp8 - Research and Teaching Associate (PhD candidate) Survey Method/Social Data Science tinyurl.com/4k7sandh Deadline: Nov. 4

jobs.wu.ac.atJob opportunity Assistant Professor, non-tenure track at think:impact - Dabei sein, wenn Denken zur Zukunft wird. An der WU Wirtschaftuniversität Wien finden Sie Jobs, um Ihr Potenzial zu entfalten.2931 - Political Economy of Public Policy

Johannes Breuer reposted

Lena Frischlich
@lenafrescamente.bsky.social

Come work with us - we have cinnamon buns (and an amazing team, very nice colleagues and an inspiring interdisciplinary environment)

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Johannes Breuer reposted

Claes de Vreese
@claesdevreese.bsky.social

🚨JOBS: Information influence campaigns are at the center of hybrid conflicts. As part of a new initiative on Hybrid War and Democracy that I lead at @d-ias.bsky.social, there are openings at post-doc and assistant professor (tenure track) levels. 🗓️: DL Nov 23 Share 🫶 🧵 www.sdu.dk/en/forskning...

sdu.dkVacant positions at the Danish Institute for Advanced Study (DIAS), University of Southern DenmarkDo you merge research excellence with immense curiosity and a sense of playfulness? We are currently hiring tenured DIAS Professors and tenure track DIAS Fellows across multiple disciplines - apply t...

Johannes Breuer reposted

Vincent Arel-Bundock
@vincentab.bsky.social

Hi all! I'm looking for people to try out my new collaborative writing platform. Think: Overleaf or GDocs for Mkdown LaTeX HTML Typst Quarto Free, open source, and full-featured. Many editors, chat, comments, track changes, history, AI, mobile, templates, etc Would ❤️ any feedback! librepaper.org

Johannes Breuer reposted

GESIS Training
@gesistraining.bsky.social

📣 October News out! 🤩 Registration is open for #GESISspringseminar 2027 on Metascience: Methods and Tools for Robust Inference. 🔍 Interview with Cassie Ann Short & Nate Breznau on Metascience. ✨ Updates on #GESISworkshops. ⏪ Look back on #GESISsummerschool 2026. 👀 ➡️ t1p.de/Training-NL-....

Johannes Breuer reposted

cemas_io
@cemas.io

Seit Sonntag kursiert online eine Grafik, mittels derer behauptet wird, ukrainische Drohnenangriffe auf Rechenzentren des russischen Konzerns Yandex hätten zu einem Rückgang russischer Bot-Aktivitäten bei Desinformationskampagnen rund um die AfD geführt. Dieser Zusammenhang ist bislang unbelegt.

br.de#Faktenfuchs: Irreführende Grafik zu angeblicher Bot-AktivitätIm Netz kursiert eine Grafik, die angeblich zeigen soll, wie infolge von Angriffen auf russische Rechenzentren die Online-Aktivität rund um die AfD abgenommen habe. Doch die Grafik weist große Unstimm...

Johannes Breuer reposted

renebekkers
@renebekkers.mastodon.social.ap.brid.gy

How complete and accurate are AI tools to find research papers? https://renebekkers.wordpress.com/2026/10/10/fast-but-incomplete-and-inaccurate-twelve-ai-powered-tools-for-literature-search/

renebekkers.wordpress.comFast, but incomplete and inaccurate: twelve AI-powered tools for literature searchThere seems to be s a lot of enthusiasm for AI powered tools for research these days, if I look at the feeds that the tech industry controls. No doubt that these tools greatly reduce the effort for a literature review that sounds plausible. It’s great to get a nice set of studies as a starting point for a new project in a new research area. But in these cases we usually don’t know what we don’t see. So here’s a cautionary tale from a rare case where we do know the errors of omission in AI powered tools. The challenge I gave the AI-powered tools is difficult: I asked them to identify replications of previous experiments in the multidisciplinary field of research on charitable giving. Such replications are needles in a field of haystacks. But we found them by hand, with a multidisciplinary team of six scholars in a study on replications of research on charitable giving. We conducted a comprehensive manual search on Google Scholar and identified 48 replications of experiments. How many replications from the set of 48 can AI-powered tools identify? Not many, it turns out. The best tool, Google Scholar Labs, found one third of them. Most tools – even popular ones such as Perplexity, find fewer than 10. LeapSpace, the tool that Elsevier is trying to sell to university libraries in the Netherlands, performed abysmally. Collectively the twelve tools I assessed identified exactly half of all replications that we had found by hand. But it gets worse. Many studies that the AI tools identified as replications were not replications at all. Prompting more elaborately with explanations and examples did not make the results better. The news is not all bad. The tools also identified a number of new studies that we had not found because we had limited our search to keywords that returned a feasible number of results. The newly found replications used other terms than we had looked for. Another upside: at least the searches came back quickly. The slowest tool, Claude Science, took 35 minutes. The quickest tool returned results within a few seconds. The result: it could not find any of the replications. The results underscore the necessity of human review of results from AI-powered tools. At face value, the reports produced by the tools seem entirely plausible. However, human review of the results showed a high number of false positives, up to 70% of all results for LeapSpace. Conclusions based on the searches of the AI-powered tools are incomplete and incorrect. Without an accurate and efficient method to identify false positives the speed with which the tools concluded their work gives users the false impression that they can outsource identifying relevant previous work to AI-powered tools. Read the full paper including the prompts and supplementary materials with all details and a link to the data and code here. Like Loading... ### _Related_
Johannes Breuer
@johannesbreuer.com

"Teil der Zersetzungsstrategie der AfD. Es ist wie in dem Kartenspiel „Werwolf“, bei dem eine Dorfgemeinschaft den unbekannten Werwolf sucht, der nachts heimlich und anonym mordet, aber tagsüber versucht als vermeintlich harmloser Dorfbewohner mit Lügen und Falschbeschuldigungen Zwietracht zu säen."

taz@taz.de

Zum ersten Mal seit 1945 wurde in Magdeburg ein Rechtsextremist zum Präsidenten eines deutschen Parlaments gewählt – und CDU-Abgeordnete lügen über ihr Wahlverhalten. 👉️ taz.de/!6216651/

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European Consortium for Political Research
@ecpr.bsky.social

Postdoctoral Researcher in Computational Social Science (NLP/ML) #ECPRMemberJobs 🎓 A PhD in computational social science, computer science, data science, or political science with strong computational methods 🏫 Koç University ⌛ Sunday 1 November 🔗 buff.ly/pAuDNia #PolSciJobs #PoliSky #AcademicSky

buff.lyPostdoctoral Researcher in Computational Social Science (NLP & Machine Learning)Shape the future — Koç University

Johannes Breuer reposted

simine vazire
@simine.com

Another special issue at Psych Science! We invite “submissions that advance the field through critical appraisal of articles previously published by Psychological Science” Please share! www.psychologicalscience.org/publications...

psychologicalscience.orgSpecial Issue Call for Submissions: “Appraising the Foundations of Psychological Science”Editors: Tom Beckers and Heather UrryOne way a journal can earn its reputation for quality is to take active steps to vet the articles that appear within its pages after publication. To that end, Psyc...

Johannes Breuer reposted

Nicolai Berk
@nicolaiberk.bsky.social

We're excited that Leah von der Heyde will join us for the next session of the TaDa Fall Speaker Series: “How (Not) to Use LLMs in Survey Research” When? Wednesday, October 14, 17:00 (Berlin time) Sign up for our newsletter at tada.cool for the zoom link!

tada.coolTaDa — Text-as-Data Speaker SeriesFree online talks on text-as-data, NLP and machine learning in the social sciences. Biweekly Wednesdays, 17:00 Berlin time, on Zoom.

Johannes Breuer reposted

Arndt Leininger
@aleininger.bsky.social

🧵 Just accepted @thejop.bsky.social, with @tswalve.bsky.social "What's in a name? Name recognition, place-based identities, and candidate success" Voters prefer local candidates. But how do they know who's local? Often simply from the name on the ballot👇 www.journals.uchicago.edu/doi/10.1086/...

journals.uchicago.eduWhat's in a name? Name recognition, place-based identities, and candidate success | The Journal of Politics: Vol 0, No ja
Johannes Breuer
@johannesbreuer.com

My 9 games #My9Games my9games.net/en/share/8f5...

Dr. Rachel Kowert@drkowert.bsky.social

Nine games that changed who we are? There are so many more than 9... but as you can tell from the image, Final Fantasy has changed who I am foundationally as a human being (It's ridiculous that Zelda isn't on my list or Witcher 3 isn't here... but I started picking CHRONOLOGICALLY... Geralt 4 Life)

Johannes Breuer
@johannesbreuer.com

Neues Open-Access-Paper aus der @mepsy.bsky.social : "Künstliche Intelligenz: Neue Technologie, bekannte Fragen? Eine Perspektive der Fachgruppe Medienpsychologie" doi.org/10.1026/0033...

doi.orgKünstliche Intelligenz: Neue Technologie, bekannte Fragen? Eine Perspektive der Fachgruppe Medienpsychologie | Psychologische RundschauZusammenfassung: Dieses Positionspapier diskutiert die Rolle und Bedeutung von Künstlicher Intelligenz (KI) für die Medienpsychologie entlang von drei Leitfragen: 1) Wie verändert KI das Fach Medienps...

Johannes Breuer reposted

Lukas Röseler
@aufdroeseler.bsky.social

What do we expect of robustness reproductions in the age of AI? Help us find out at the Münster Reprohack workshop from December 2-4. We will conduct AI-led and human-led robustness reproductions, that are subsequently submitted to @r2journal.bsky.social Apply at indico.uni-muenster.de/e/reprohack

indico.uni-muenster.deReproHackReproHack: Join us for a mentored three-day reproduction hackathon! Background When building on past research, we rely on it being correct and robust - and yet, these characteristics are rarely assess...

Johannes Breuer reposted

Igor Grossmann, PhD
@igi.bsky.social

We're hiring research engineers, research associates & several postdocs at the Wisdom & Culture Lab @UWaterloo to build experiments, tools & models on how AI shapes human reasoning, decisions & culture. Psych, cogsci, ML/NLP, HCI & eng backgrounds welcome. uwaterloo.ca/wisdom-and-c...

Johannes Breuer reposted

Leonie Vogelsmeier
@leonievogelsmeier.bsky.social

New preprint: We show how methodological triangulation can clarify what quantitative careless-responding detection methods capture & why they differ in what they flag as careless in ESM data: osf.io/preprints/ps... @domimaciejewski.bsky.social @leonieschorrlepp.bsky.social @tesc-tilburgu.bsky.social

osf.ioTriangulating Careless Responding: Quantitative Models Meet Qualitative Insights on Response ProcessesDetecting careless responding in experience sampling methodology (ESM) is essential for ensuring data quality. Although quantitative detection methods are increasingly available, their low alignment r...

Johannes Breuer reposted

European Social Survey
@ess-survey.bsky.social

Watch a recording of our latest methods #webinar on implementing generative artificial intelligence into #survey processes. Patrick Sturgis (@lsemethodology.bsky.social 🇬🇧) presented the results from two studies on the use of #AI for questionnaire pretesting and occupational coding. buff.ly/T1pMTsf

buff.lyGenerative AI and the future of survey measurementPatrick Sturgis (London School of Economics) presented a survey methods webinar about using generative AI in surveys on 15 September 2026. Large language models have the potential to transform many…