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Vincent Traag

@vtraag.bsky.social
693 followers 421 following 118 posts

Senior researcher at CWTS, Leiden University. Computational social science, science studies, modelling & networks.

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Reposted by Vincent Traag
European Politics @USAAR - Daniela Braun | Georg Wenzelburger @politicsunisaar.bsky.social · 16/09/2026
We have two open professorships at @i2sc.net's SOUNDS project! One in #CompSocSci, one in #PoliSci. #hiring
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Claes de Vreese @claesdevreese.bsky.social · 13/10/2026
🚨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.dk
Vacant positions at the Danish Institute for Advanced Study (DIAS), University of Southern Denmark
Do 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...
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Per Engzell @pengzell.bsky.social · 12/10/2026
University of Mannheim is hiring a W3 Professor in Social Data Science and Social Science Methodology. Start: 1 February 2027. Application deadline: 22 October 2026. www.sowi.uni-mannheim.de/en/about/job...
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Daniel Lakens @lakens.bsky.social · 11/10/2026
For a metascience project I am trying to download files from Dryad (a popular data sharing platform in ecology). The platform has such strict API limitations that it is unusable for anything else than a single manual download. Please use Zenodo instead. Dryad is horrible.
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Jake Grumbach @jakemgrumbach.bsky.social · 09/10/2026
New working paper: the Norwegian wealth tax was a huge success. The "exodus" of wealthy people never happened (less than 100 individuals left). Tax revenue increased by 71.5%. No changes in business activity or investment. www.nber.org/papers/w35854
Taxing Entrepreneurial Wealth: Evidence from
Norway, 2021-2025
Marius A. K. Ring
WORKING PAPER 35854|
DOl 10.3386/w35854
ISSUE DATE October 2026
Whether imposing higher taxes on business owners adversely affects business activity by constraining investment and inducing capitalist flight is a central question in the ongoing debate on how to tax the ultra wealthy. To shed new light, I exploit a series of related Norwegian reforms during 2021-2024 that increased dividend tax rates, removed migration-related capital gains tax loopholes, and nearly doubled the effective marginal tax rate on business wealth. These reforms spurred international debate and, allegedly, an "exodus" of Norwegian billionaires (Financial Times,
2023). While I document clear effects on migration, these responses are concentrated among the top 0.1% of the wealth distribution and mostly confined to 2022 and 2023. My results indicate that at most 100 individuals left due to the reforms. I find no evidence of significant outmigration or reduced inflows of startup founders or inventors. I estimate that absent any outmigration, wealth tax revenues would have increased by 75% from 2021 to 2024. Reform-driven outmigration lowers the revenue gain to 71.5%. My findings further show that outmigrating owners' firms remain economically active and do not reduce investment. In a broader set of analyses, I examine whether business outcomes are affected, regardless of whether owners outmigrate, since firms may reduce investment both due to liquidity constraints or distortions to owners' savings decisions. I compare firms owned by Norwegian individuals subject to the wealth tax with firms owned by foreigners and other tax-exempt entities. By merging historical ownership data from Orbis with the Norwegian shareholder register, I perform these analyses on both Norwegian and foreign-domiciled firms.
Across settings, I find no evidence that Norwegian-owned firms pay out more dividends or invest less after the reforms,…
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realise-project.eu @realise-project.eu · 05/10/2026
🚀 REALISE kicks off today in Graz! Partners from across Europe are gathering at Know Center to start work on making research assessment more responsible, evidence-based and fair. Follow along for the next two days. #REALISEmeets #ResearchAssessment #OpenScience
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realise-project.eu @realise-project.eu · 06/10/2026
That's a wrap on the REALISE kick-off in Graz 🎉 Thank you to all partners, speakers and our hosts at Know Center. The real work starts now. Stay tuned! @unileiden.bsky.social @edinburgh-uni.bsky.social @csic.es @pensoft.net #REALISE #REALISEkickoff #ResearchAssessment
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Stan van Pelt @stanvanpelt.nl · 09/10/2026
Elke wetenschapper weet: de collegiale ‘keuring’ van artikelen (peer review) is gebrekkig. Maar hoe kan het beter? @ludowaltman.bsky.social doet suggesties in @volkskrant.nl. In mijn boek Sloppy Science komt dit probleem ook aan bod. Mijn 5ct: minder publiceren. www.volkskrant.nl/kijkverder/v...
volkskrant.nl
De cruciale kwaliteitskeuring in de wetenschap hapert. Zo kan de 'peer review' radicaal anders
Gemaakt én gecontroleerd door wetenschappers, dat is het kwaliteitsstempel waarmee wetenschappelijke kennis steevast ter wereld komt. Maar achter de schermen rommelt het: zo betrouwbaar is dat stempel...
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Herman van de Werfhorst 🟥 @hermwerf.bsky.social · 09/10/2026
zolang Den Haag blijft steggelen over #box3, hier nog maar eens een figuur van @gabrielzucman.bsky.social et al: de totale belastingdruk per inkomensgroep. Zie hoe de lijn negatief is in Nederland; hogere inkomensgroepen betalen minder belasting (alle belastingen tezamen). >
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CWTS | Leiden University @cwts.nl · 09/10/2026
❗Unfortunately, we need to cancel today’s seminar because our speaker fell ill. We will keep you updated regarding a rescheduling of this presentation.
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Marc van Oostendorp @fonolog.bsky.social · 05/10/2026
Wetenschappers vertellen elkaar graag gruwelverhalen over alle onwetenden die zich op internet zomaar met hun vak bemoeien, en die zo de wetenschap ondergraven. neerlandistiek.nl/2026/10/geen...
neerlandistiek.nl
Geen onbevoegden in het wetenschappelijk debat
Wetenschappers vertellen elkaar graag gruwelverhalen over alle onwetenden die zich op internet zomaar met hun vak bemoeien, en die zo de wetenschap ondergraven.
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Vincent Traag @vtraag.bsky.social · 05/10/2026
Very much looking forward to this presentation by @roderikrekker.bsky.social. Make sure to join this Friday!
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CWTS | Leiden University @cwts.nl · 05/10/2026
📣 New research seminar! This Friday, @roderikrekker.bsky.social will give a presentation on the politicization of public trust in science, its causes, consequences, and cures. 🎧 Make sure to join! 📅 Friday, 9/10/2026 | 3:00-4:15 PM (CEST) 📌 Online More information on our website 👉 edu.nl/rf3jj
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Eric Schares @eschares.bsky.social · 01/10/2026
"This opens a real opportunity to say plainly what the biggest commercial publishers have spent decades obscuring: publisher fees are not required to ensure public access in the first place....there is no cost to comply with a public access mandate." #AcademicPublishing
thehill.com
End the false choice of expensive research fees
Heather Joseph, executive director of SPARC, argues that the Office of Management and Budget should clarify that researchers can satisfy federal public access mandates by depositing manuscripts in …
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CWTS | Leiden University @cwts.nl · 30/09/2026
🏛️ The UNESCO Chair on Diversity and Inclusion in Global Science at CWTS has been renewed for a new term of five years! Established in 2022, the Chair will continue its work around equity and Open Science, the Multiversatory, epistemic inequalities, and evidence-based science diplomacy.
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Dietram A. Scheufele @dietram.bsky.social · 29/09/2026
"[W]e call on the behavioral sciences to pause the use of LLMs as subjects [...] The use of synthetic samples misleads researchers, distorts the published record, and will impede the very science that these studies claim to advance." www.pnas.org/doi/full/10.... #AI #socialscience #scicomm
pnas.org
AI cannot replace human participants in behavioral research | PNAS
AI cannot replace human participants in behavioral research
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YY Ahn @yyahn.bsky.social · 29/09/2026
UVA School of Data Science has two open rank faculty positions open this year. Join us! - NLP: apply.interfolio.com/191213 - Data and Society: apply.interfolio.com/191214
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J Dierkes @dierkes.bsky.social · 29/09/2026
We're hiring at School of Social Sciences at Univ of Mannheim Full Professorship (W-3) in Social Data Science and Social Science Methodology Apply by Oct 22 2026 www.sowi.uni-mannheim.de/en/about/job... @methodsnet.bsky.social
sowi.uni-mannheim.de
Job Vacancies
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Vers Beton @versbeton.nl · 29/09/2026
Heb jij journalistieke ambities en wil jij een jaar lang meedraaien met een lokale onderzoeksredactie? Vers Beton zoekt een onderzoekstrainee voor 38 uur in de week. www.versbeton.nl/vacatures/ve...
versbeton.nl
Vers Beton zoekt een trainee onderzoeksjournalistiek
De leukste banen in Rotterdam en omstreken.
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Bart⚓️ @bartgonnissen.bsky.social · 23/09/2026
The Facial Expressions of Tethys by artist Julius von Bismarck. A suspended high-sea buoy that moves in real time. Sensors on a twin buoy out in the Atlantic Ocean send live satellite data to motors inside the museum. This makes the indoor buoy copy the exact, real-time movements of the ocean waves.
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Chris Bail @chrisbail.bsky.social · 24/09/2026
Interested in the social impact of AI? Consider applying for this new post-doc at Duke's Society-Centered AI Initiative: academicjobsonline.org/ajo/jobs/32805
academicjobsonline.org
Duke University, Social Science Research Institute
Job #AJO32805, Postdoctoral Associate, Social Science Research Institute, Duke University, Durham, North Carolina, US
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CWTS | Leiden University @cwts.nl · 24/09/2026
📣 In our seminar next week Friday, Jinhyuk Yun will introduce a study that used an AI model to reveal hidden pathways in 500 years of paintings and connect this work to questions around human knowledge creation. 📅 Friday, 2/10/2026 | 3:00-4:15 PM (CEST) www.universiteitleiden.nl/en/events/20...
universiteitleiden.nl
Toegang geblokkeerd / Access Blocked
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Alexander Wuttke @kunkakom.bsky.social · 23/09/2026
We are hiring at LMU Munich: two PhD positions and one postdoc on democracy, political psychology and computational social science. Start: January 2027 or as soon as possible. We review applications on a rolling basis until October 20. Details below. Reposts very welcome! 1/7
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CWTS | Leiden University @cwts.nl · 22/09/2026
🎉 Congratulations to the new chair and members of the Young Academy Leiden (YAL)! We are especially proud to see our colleague @kathleen-gregory.bsky.social as a new member. 💬 Read our interview with Kathleen to hear about her appointment and her plans: www.universiteitleiden.nl/en/news/2026...
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Ana Martinovici @anamartinovici.bsky.social · 08/09/2026
Workshop done 😀 since I anyway put together a list of resources, I'm going to share it in this thread. So here we go, my top recommendations for how to improve computational reproducibility of your work
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Jose A. Cañada @joseacanada.bsky.social · 16/09/2026
Happy to announce a 3-year #postdoc opening in our research group on Aquatic #STS at the University of @oulu.fi Position is linked to the amazing SAFIRE interdisciplinary research programme. Get in touch if you have any question! Deadline 30.09.26. oulunyliopisto.varbi.com/what:job/job...
oulunyliopisto.varbi.com
Postdoctoral Researcher, Science and Technology Studies (STS) and aquatic restoration in the Nordic and Arctic regions
We are looking to hire highly motivated Postdoctoral Researcher to join the Department of Anthropology, in the History, Culture and Communications Unit at the Faculty of Humanities, the University of
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Terence Tao @teorth.bsky.social · 11/09/2026
A group of 25 Fields Medalists, including myself, have made a joint declaration on Math and AI: mathandai.org . We welcome additional signatories. See also this article in the Economist announcing the declaration: www.economist.com/science-and-...
mathandai.org
Declaration — Math and AI
Read the declaration and add your name.
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Computational Communication Science Lab (CCL) @compcommlab.bsky.social · 09/09/2026
📢 We’re hiring a Postdoc in Computational Communication Science at the University of Vienna! 🔎 Text/image analysis, platform data & political communication 📍 Vienna ⏳ 6 years, full-time ⏰ Apply by 3 Oct jobs.univie.ac.at/job/Universi... Find out more about our team here: compcommlab.univie.ac.at
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CWTS | Leiden University @cwts.nl · 10/09/2026
📣 New research seminar: Next week, @dkochetkov.bsky.social will give a talk on 'Crossing the Chasm: The PRC Model and the Future of Peer Review' @peerreviewweek.bsky.social 📅 Friday, 18/9/2026 | 3:00-4:15 PM (CEST) 📌 Online & in person at CWTS www.universiteitleiden.nl/en/events/20...
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Alex Rushforth @alexrushforth.bsky.social · 09/09/2026
Great presentation by my @cwts.nl colleague Nino Gogadze at #STIENID2026 on @coarassessment.bsky.social research assessment reform in three Eastern European countries.
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Research Software Alliance @researchsoftware.bsky.social · 09/09/2026
It’s a wrap for the International #ResearchSoftware Conference. Thanks to our 110+ attendees, presenters & sponsors: @amazonwebservices.bsky.social, @softwaresaved.bsky.social, US NIH, @ncsaatillinois.bsky.social, @esciencecenter.bsky.social, NWO, @schmidtsciences.bsky.social, @society-rse.org.
Audience members in a conference room listening to the keynote speakers present in front of their slides.
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Nature Portfolio @natureportfolio.nature.com · 06/09/2026
Nearly half of all polarization research focuses on the US, yet many American findings are global outliers. A Review in Nature Communications argues that a globally equitable understanding requires bridging traditional social science with new approaches leveraging social media and AI. 🧪
go.nature.com
Toward an integrated and globally equitable understanding of political polarization - Nature Communications
Nearly half of all polarization research focuses on the United States, yet many American findings are global outliers. A globally equitable understanding requires bridging traditional social science with new approaches leveraging social media and AI.
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Institute for Replication @i4replication.bsky.social · 04/09/2026
🧵 New DP from I4R co-director Lester Lusher, with Sonia Ale, Md Shafiqui Islam, Huda Osman & Jacob Stenstrom (Pitt): "When Samples Shape Significance." What happens when you re-estimate published results using fresh draws of the same data? Some evidence from Google Trends!
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Computational Communication Science Lab (CCL) @compcommlab.bsky.social · 03/09/2026
📢 We’re hiring a Senior Scientist in Computational Communication Science at the University of Vienna! Come join our CCL Team and work on building a research infrastructure for #CSS @medem.bsky.social 🤓 📍 Vienna | 4-year position | full-time Apply via the University of Vienna job portal 👇
jobs.univie.ac.at
Senior Scientist (Postdoc)
Senior Scientist (Postdoc)
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Elle Cordova @ellecordova.bsky.social · 03/09/2026
Rough Draft vs Final Draft
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Timothy Caulfield @caulfieldtim.bsky.social · 02/09/2026
"What has fundamentally changed is the emergence of the information age (the internet, social media, AI) and its integration into, and domination over, our contemporary political discourse." Needed: a globally equitable understanding of political polarization www.nature.com/articles/s41...
nature.com
Toward an integrated and globally equitable understanding of political polarization - Nature Communications
Nearly half of all polarization research focuses on the United States, yet many American findings are global outliers. A globally equitable understanding requires bridging traditional social science w...
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Eric Schares @eschares.bsky.social · 31/08/2026
🚨Update: Our analysis of global APC expenditure has now been expanded to cover more publishers (7 -> 14) and more years (2019-2025). We estimate $15B in APCs paid over seven years, $3.7B in 2025 alone. Elsevier crosses the $1B threshold by itself in 2025. arxiv.org/abs/2608.16322 #ScholComm
Line chart showing 5 biggest publishers from 2019-2025
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Leiden Madtrics @leidenmadtrics.bsky.social · 31/08/2026
🤝 How can we foster a collaborative, fair & healthy research culture that best enables researchers & research communities in their work? That question is at the heart of the new 2026–2028 strategy for our Culture&Evaluation focal area, as explained in our latest post. 👇 Read now on Leiden Madtrics
leidenmadtrics.nl
Strengthening research cultures
How can we foster a collaborative, fair, and healthy research culture that enables researchers and research communities to do their best work? This question lies at the heart of the new strategy of th...
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danah boyd @zephoria.bsky.social · 28/08/2026
PhD candidates/new grads: Postdoc opportunity with me focused on political economy and tech. See details here: academicjobsonline.org/ajo/jobs/32502
academicjobsonline.org
Cornell University, Department of Communication
Job #AJO32502, Postdoctoral Associate, Department of Communication, Cornell University, Ithaca, New York, US
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Katrin Weller @kwelle.bsky.social · 25/08/2026
Job opening with my colleagues at GESIS Knowledge Technologies for the Social Science Department: gesis.jobs.personio.de/job/2765070?... #ResearchData #FAIR #FAIRdata #researchinfrastructure
gesis.jobs.personio.de
Forschungsdatenmanager*in (Postdoc) für die Erstellung von Harvestingnetzwerken (KTS-84) | Jobs at GESIS – Leibniz-Institut für Sozialwissenschaften
GESIS is one of the world's leading social science infrastructure facilities, supporting researchers at all levels of their research projects with expertise and infrastructure services. We help ensure...
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Claire E. Robertson, PhD @crobertson500.bsky.social · 24/08/2026
Is social media truly making us more politically polarized, or does it simply over-represent our most extreme opinions? In our new preprint, @small-schulz.bsky.social and I present *punishing evidence* that social media systematically overrepresents users’ most extreme political opinions. 1/n
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Cas Mudde @casmudde.bsky.social · 17/08/2026
The Stein Rokkan Chair in Comparative Politics at @eui-eu.bsky.social is probably the most prestigious CP position in Europe. And it is open now! Would be nice to (finally) see a female chair this time…
eui.eu
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Sara Hobolt @sarahobolt.bsky.social · 17/08/2026
📢 LSE Political Theory job opening We’re looking for a political theorist to join us at @lsegovernment.bsky.social - it is an open rank search, so we welcome applications at Assistant, Associate or Full Professor level Reach out with questions & please share widely! jobs.lse.ac.uk/Vacancies/I/...
jobs.lse.ac.uk
Assistant/Associate/Professor in Political Theory
Assistant/Associate/Professor in Political Theory, , <p>&nbsp;</p> <p style="text-align: center;">LSE is committed to building a diverse, equitable and truly inclusive university</p> <p style="margin:...
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Christiaan Monden @cmonden.bsky.social · 17/08/2026
Do you have some exciting research ideas? Apply for a three-year postdoc position in sociology at Nuffield College starting September 2027. Apply by 21/9. www.nuffield.ox.ac.uk/the-college/...
nuffield.ox.ac.uk
Postdoctoral Prize Research Fellowships in Sociology (two posts) - Nuffield College Oxford University
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Ozan Aksoy @aksoyundan.bsky.social · 17/08/2026
prize fellowships are out: two three-year postdoc positions in sociology, time and resources to carry out independent research projects with minimal distraction. Deadline 21 September. Details: www.nuffield.ox.ac.uk/the-college/...
nuffield.ox.ac.uk
Postdoctoral Prize Research Fellowships in Sociology (two posts) - Nuffield College Oxford University
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The Coalition for Independent Technology Research @thecoalition.bsky.social · 17/08/2026
Read more about our coalition's recent victory getting a US federal court to block an immigration policy targeting public interest technology researchers ⬇️ knightcolumbia.org/content/fede...
“As expanded in December and applied since, [the policy] does not stop at individuals who use sovereign authority to suppress protected expression in the United States. It reaches private researchers, advocates, nonprofit leaders, and trust-and-safety professionals whose asserted “censorship” consists of studying platforms, reporting on disinformation, petitioning for access to platform data, and urging platforms or advertisers to act on what they find.” – James E. Boasberg, Chief Judge
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Daniel Lakens @lakens.bsky.social · 17/08/2026
Registered Reports and preregistration of secondary data analysis is only coherently possible if you can prove you did not have access to the data. Without such proof, these methods should not be allowed for secondary data. We explain this view in detail in www.tandfonline.com/doi/full/10....
tandfonline.com
The benefits of preregistration and Registered Reports
Practices that introduce systematic bias are common in most scientific disciplines, including toxicology. Selective reporting of results and publication bias are two of the most prevalent sources o...
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Vincent Traag @vtraag.bsky.social · 13/08/2026
Made with @zoom.earth
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Vincent Traag @vtraag.bsky.social · 13/08/2026
The solar eclipse from space.
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