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Mathias Wullum Nielsen

@mathiaswullum.bsky.social
511 followers 407 following 8 posts

Associate Professor, Department of Sociology, UCPH. mathiaswullumnielsen.weebly.com

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Reposted by Mathias Wullum Nielsen
Kristian Bernt Karlson @kbkarlson.bsky.social · 09/03/2026
We often treat education as the primary engine of social mobility, but conventional models may be overestimating its impact. Not correcting for selection into schooling will artificially inflate any indirect effect through schooling... 1/3 #socialmobility #sociology
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Don Moynihan @donmoyn.bsky.social · 15/01/2026
The people wearing masks are scanning your face to capture your identity.
An immigrant agent holds a cellphone that is doing a facial scan of a detained man. The app says "Searching Face"
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Ryan Goodman @rgoodlaw.bsky.social · 12/11/2025
It begins. Clearly incriminating evidence against president of the United States. Epstein to Maxwell, April 2, 2011: "i want you to realize that that dog that hasn't barked is trump. [VICTIM] spent hours at my house with him ,, he has never once been mentioned. police chief. etc."
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Michael Bang Petersen @m-b-petersen.bsky.social · 06/11/2025
Four (!) three-year postdoc positions available at @au.dk: international.au.dk/about/profil... Join an incredible team & help understand the psychological & political implications of the clash between high-speed society & slow-speed democracy. Please share! @tboeggild.bsky.social can help with Qs
international.au.dk
Four three-year postdoctoral positions in the project Slow-Motion Democracy - Vacancy at Aarhus University
Vacancy at Department of Political Science, Aarhus University
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Emil Bakkensen Johansen @emilbakke.bsky.social · 30/09/2025
Out now in @actasociologica.bsky.social: “Momentary symbols: Tracing the visual expressions of collectives” with @nicolemilmandoerr.bsky.social & @mathiaswullum.bsky.social journals.sagepub.com/doi/10.1177/... A🧵 on our approach and findings:
journals.sagepub.com
Sage Journals: Discover world-class research
Subscription and open access journals from Sage, the world's leading independent academic publisher.
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Ea Blaabæk @blaabaek.bsky.social · 29/09/2025
Even in Denmark, cultural tastes are socially stratified. With some quite cool library data we find strong gradients by education and wealth - important as wealth is rarely studied in cultural stratification research doi.org/10.1093/esr/... OA: osf.io/ar2xc_v2/dow... @europeansocreview.bsky.social
doi.org
How are cultural tastes stratified? Evidence from library borrowing for the entire population of Denmark
Abstract. Research shows that cultural tastes are socially stratified. Yet, most of this research relies on small-sample surveys and includes only a few di
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Mathias Wullum Nielsen @mathiaswullum.bsky.social · 12/09/2025
Dept. of Soc. at the Uni of Copenhagen invites applications for two or more open-rank professorships! We cover a wide range of topics and and methods, and welcome candidates with new research agendas or profiles that complement our existing strenghts. Details here: jobportal.ku.dk/videnskabeli...
jobportal.ku.dk
Call for two or more open-rank academic positions in Sociology
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Paul Hünermund @p-hunermund.com · 21/08/2025
Now imagine all your best scientists leaving your country because they’re paid far more across the pond.
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Richard D. Morey @richarddmorey.bsky.social · 08/08/2025
Paper drop, for anyone interested in #metascience, #statistics, or #metaanalysis! @clintin.bsky.social and I show in a new paper in JASA that the P-curve, a popular forensic meta-analysis method, has deeply undesirable statistical properties. www.tandfonline.com/doi/full/10.... 1/?
Cover page for the manuscript: Morey, R. D., & Davis-Stober, C. P. (2025). On the poor statistical properties of the P-curve meta-analytic procedure. Journal of the American Statistical Association, 1–19. https://doi.org/10.1080/01621459.2025.2544397Abstract for the paper: The P-curve (Simonsohn, Nelson, & Simmons, 2014; Simonsohn, Simmons, & Nelson, 2015) is a widely-used suite of meta-analytic tests advertised for detecting problems in sets of studies. They are based on nonparametric combinations of p values (e.g., Marden, 1985) across significant (p < .05) studies and are variously claimed to detect “evidential value”, “lack of evidential value”, and “left skew” in p values. We show that these tests do not have the properties ascribed to them. Moreover, they fail basic desiderata for tests, including admissibility and monotonicity. In light of these serious problems, we recommend against the use of the P-curve tests.
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Pierre Bataille @pierrebat.cpesr.fr · 17/07/2025
Du poids du racismes dans les inégalités de revenus en France
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Tom Clark @tomsclark.bsky.social · 14/07/2025
The Supreme Court is out of control. To allow the president, without any explanation, to unilaterally dismantle agencies created by an Act of Congress is to endow the president with sovereignty. There is no justification, because they haven’t given one. Our country is in big trouble.
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Petra Moser @pmoser.bsky.social · 14/07/2025
When I got tenure, I decided to use it start a new research agenda, studying US science in the 20th century, how it became dominant, what held it back, and what we can do better. Here's the first pub (with Scott Kim).
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Ursula von der Leyen @vonderleyen.ec.europa.eu · 12/07/2025
A 30% tariff on EU exports would hurt businesses, consumers and patients on both sides of the Atlantic. We will continue working towards an agreement by August 1. At the same time, we are ready to safeguard EU interests on the basis of proportionate countermeasures. → europa.eu/!tPvKn8
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Arnout van de Rijt @arnoutvanderijt.bsky.social · 06/07/2025
"...male-dominated STEM programs actually rate female applicants’ written application materials and interviews higher. Female applicants are still less likely admitted to such programs than males..." This month in our journal, @sociologicalsci.bsky.social
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Jess Calarco @jessicacalarco.com · 29/06/2025
Every cut that the government makes to social services is effectively a tax on women. Because they're the ones who will be expected to fill in the gaps.
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Julia Carrie Wong @joolia.bsky.social · 20/06/2025
It is true that sometimes New York City is frightening. For example today these men were loitering in the hallway of the 12th floor of the federal building.
4 men in jeans, t-shirts, bullet proof vests, balaclavas pulled up to their eyes, hats. They are armed and have badges but are not in uniform. They look both incredibly menacing and unbelievably dumb. They are standing at the end of an office hallway.
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Chris Hayes @chrislhayes.bsky.social · 19/06/2025
This is shocking. Pure totalitarianism from DHS, and also blatantly unconstitutional. www.newyorker.com/news/the-led...
newyorker.com
How My Reporting on the Columbia Protests Led to My Deportation
As an Australian who wrote about the demonstrations while on campus, I gave my phone a superficial clean before flying to the U.S. I underestimated what I was up against.
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ICSSI @icssi.org · 16/06/2025
Interesting discussions at our Funders Panel #ICSSI2025
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ICSSI @icssi.org · 16/06/2025
Our first invited speaker Arnout van de Rijt @arnoutvanderijt.bsky.social just kicked off the conference with a great talk on: Do grant proposal texts matter for funding decisions? A field experiment #ICSSI2025
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ICSSI @icssi.org · 16/06/2025
Fariba Karimi continues at #ICSSI2025 with gender-related themes in her phenomenal keynote "Inequalities in science and the impact of networks"
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ICSSI @icssi.org · 16/06/2025
The conference was just opened by @hckongsted.bsky.social. Welcome everyone in Copenhagen, and enjoy the next 3 days at #ICSSI2025!
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Justin Wolfers @justinwolfers.bsky.social · 15/06/2025
If we are all willing to dig in and sacrifice, by growing our red bars we can do our part in making the green bar even bigger.
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Sebastian Ramirez-Ruiz @seramirezruiz.bsky.social · 12/06/2025
📄 Whose expert knowledge informs policymaking around the world? @rsenninger.bsky.social and I analyze data from 1.2 million government policy documents from 185 countries—and find a prominent pattern: 🌍 Policy evidence is overwhelmingly sourced from the Global North. Preprint: osf.io/w8q3y 🧪🧵👇
Screenshot of the draft's title page
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Khoa @khoavuumn.bsky.social · 14/05/2025
Economists looking at an idea from sociology literature that they will be the first to write a paper on.
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Sam Stein @samsteindc.bsky.social · 13/05/2025
Bernie Sanders' office has put out a report this morning on Trump's NIH cuts: "Trump officials effectively cut $2.7 billion in [NIH] funding in the first three months of 2025 – including a 31 percent cut to cancer research through March, compared to the same timeframe last year."
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Rebecca Sear @rebeccasear.bsky.social · 30/04/2025
Is anyone here on the Editorial Board of the Brill journal Comparative Sociology? Raised a concern last year about 2 papers published in the journal which used "national IQ" data. The editor & ethics team dismissed my concern without an investigation. The journal has just published another NIQ paper
Screenshot of a paper published in the Brill journal Comparative Sociology on 23 April 2025, title Stereotypes of the Intelligence of Nations, by Sebastian Jensen and Emil KirkegaardEditorial Board
Thora Margareta Bertilsson, University of Copenhagen (Denmark)
Alfons Bora, Universitat Bielefeld (Germany)
Matteo Bortolini, University of Padua (Italy)
Vincenzo Cicchelli, Université Paris Descartes (France)
Jean-Pascal Daloz, University of Strasbourg (France)
Yves Dezalay, Ecole des Hautes Etudes en Sciences Sociales (EHESS), Paris (France)
Benjamin Gregg, University of Texas-Austin (USA)
Juergen R. Grote, Universität Potsdam and Hertie School of Governance, Berlin (Germany)
Jeffrey Halley, University of Texas-San Antonio (USA)
Andreas Hess, University College Dublin (Ireland)
John Higley, University of Texas-Austin (USA)
Hans-Joachim Lauth, Würzburg University (Germany)
Steven Levitsky, Harvard University (USA)
Andrea Maccarini, University of Padova (Italy)
Maria Malatesta, University of Bologna (Italy)
Wolfgang Merkel, WZB Berlin Social Science Center (Germany)
Leonardo Morlino, LUISS Guido Carli, Rome (Italy)
Gerardo Munck, University of Southern California, Los Angeles (USA)
Anton Pelinka, Central European University, Budapest (Hungary)
Huang Ping, Institute of American Studies, Chinese Academy of Social Sciences (China)
Masamichi Sasaki, Chuo University, Tokyo (Japan)
Carsten Schneider, Central European University, Budapest (Hungary)
Catalina Smulovitz, Universidad Torcuato Di Tella, Buenos Aires (Argentina)
Gunther Teubner, Johann Wolfgang Goethe-Universitat, Frankfurt (Germany)
Ming-Chang Tsai, National Taipei University (Taiwan)
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Charlie Warzel @cwarzel.bsky.social · 23/04/2025
there are a lot of good reasons not to use musk's platform but this has always been a big one: you post at the pleasure of the world's richest man, whose project is to punish his political enemies
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Laura K. Nelson @lauraknelson.bsky.social · 23/04/2025
As we were writing this paper the NSF ADVANCE program was "archived" (cancelled). A heavy moment for us mid-paper. The results are important - check it out: ADVANCE is one of the (if not the) longest running NSF programs, and, unusually for the NSF, is a collaboration among multiple directorates. 🧵
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Jess Calarco @jessicacalarco.com · 22/04/2025
A longitudinal survey of political scientists shows: experts think we're slipping fast from democracy to dictatorship Which explains the administration's efforts to cut/muzzle research: it's easier to claim they're the good guys without facts/experts to get in the way www.npr.org/2025/04/22/n...
npr.org
Hundreds of scholars say U.S. is swiftly heading toward authoritarianism
Most — but not all — political scientists are deeply troubled by the president's attempts to expand executive power, according to a national survey.
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Alexander Berger @albrgr.bsky.social · 17/04/2025
New preprint finding that eliminating US global health funding over the next fifteen years would cause: - 15.2m deaths from AIDS - 2.2m deaths from TB - 7.9 additional child deaths
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Victor Ray @victorerikray.bsky.social · 16/04/2025
This is absolutely wonderful news. @hebagowayed.bsky.social is an incredible scholar and the best that sociology has to offer. Seeing Carnegie recognize her work is heartening in these terrible times.
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Justin Wolfers @justinwolfers.bsky.social · 16/04/2025
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Michael Bang Petersen @m-b-petersen.bsky.social · 16/04/2025
The Canadian Association of University Teachers warns academics against traveling to the United States: “Academics (…) who have themselves expressed negative views about the Trump administration, should be particularly cautious about U.S. travel.” apnews.com/article/cana...
apnews.com
Canadian university teachers warned against traveling to the United States
The association that represents academic staff at Canadian universities is warning its members against non-essential travel to the United States.
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Videnskab.dk @videnskab.dk · 16/04/2025
Vaccine mod helvedesild kan have overraskende sideeffekt: Beskytter muligvis mod demens #dkvid #dkforsk
videnskab.dk
Vaccine mod helvedesild kan have overraskende sideeffekt: Beskytter muligvis mod demens
Professor efterlyser yderligere undersøgelser, men overvejer nu selv at tage vaccinen.
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Brendan Nyhan @brendannyhan.bsky.social · 14/04/2025
Harvard FTW: "The university will not surrender its independence or relinquish its constitutional rights. Neither Harvard nor any other private university can allow itself to be taken over by the federal government."
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Daniel Laurison @daniellaurison.bsky.social · 14/04/2025
Every single person with any sense of conscience whatsoever or even just a basic instinct for self-preservation ought to be opposing this. And not just because this was a "mistake" - we should not be treating anyone this way.
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Beth Popp Berman @epopppp.bsky.social · 12/04/2025
I would like to read more about what this means.
ft.com
The rule change that could blow open US law
Arizona is permitting non-lawyers to own legal practices, potentially unleashing a wave of private equity money
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Mathias Wullum Nielsen @mathiaswullum.bsky.social · 12/04/2025
We have a new paper out in Nature titled 'Intersectional analysis for science and technology'. www.nature.com/articles/s41...
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Tristan Snell @tristansnell.bsky.social · 10/04/2025
Forcing people to pay $130 for a passport in order to vote is just a Jim Crow poll tax by another name. It is blatantly unconstitutional.
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Don Moynihan @donmoyn.bsky.social · 10/04/2025
One sign that we are living under an authoritarian regime is that a lot of people are acting like they are living under an authoritarian regime.
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Thomas Zimmer @thomaszimmer.bsky.social · 11/04/2025
This is very noticeable among students as well. Especially international students are increasingly reluctant to speak, even inside the classroom, because they are - understandably! rightfully! - frightened they might get punished by the regime. It is heartbreaking and it makes me so fucking angry.
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Outspoken™️ @out5p0ken.bsky.social · 10/04/2025
“He made 2.5 million today and he made $900 million. That’s not bad.” Sounds like market manipulation to me. That’s bad.
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Misha Teplitskiy | Science of science | on LinkedIn mostly @innovation.bsky.social · 10/04/2025
Anecdotally, many advisors want their PhD students to go into academia and treat them worse if they want industry job. Does intention to go into industry *cause* less mentorship? Maybe confounded by something else? Inna, Austin, moi ran audit experiment to find out! (1/3)
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Thierry Rossier @thierryrossier.bsky.social · 10/04/2025
Thank you so much @simonkuper.bsky.social for your @financialtimes.com piece on "A new who’s who of the global elites". For those who want to know more about varieties of economic elites in 16 countries, check our paper here: onlinelibrary.wiley.com/doi/full/10....
onlinelibrary.wiley.com
Varieties of Economic Elites? Preliminary Results From the World Elite Database (WED)
The strategies, decisions and beliefs of those who occupy prominent positions of economic power have influence on very large corporations and the markets they dominate, on vast amounts of economic re...
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Florian Ederer @florianederer.bsky.social · 10/04/2025
People are willing to forgo 15-30% of their wage to avoid hostile work environments. Women report a stronger distaste for exclusive workplaces and environments with sexual harassment and value hybrid work twice as much in the presence of sexual harassment. Collis & @clemvaneff.bsky.social
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James Zou @jameszou.bsky.social · 10/04/2025
We discuss how to conduct intersectional analysis in science and technology in @nature.com nature.com/articles/s41... I learned a ton from working w/ dream team co-authors! Great job by Londa Schiebinger + Mathias Nielson leading this project 👏 Also thanks @meharpist.bsky.social for guidance!
nature.com
Intersectional analysis for science and technology - Nature
This Perspective offers a guide for researchers, peer-reviewed journals and funding agencies to make quantitative intersectional approaches a standard part of science and technology research design, w...
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Kristian Bernt Karlson @kbkarlson.bsky.social · 10/04/2025
Wauv!! My beyond awesome colleague in the Copenhagen sociology department, @mathiaswullum.bsky.social, has just published in @nature.com!! A very cool piece that argues for the many benefits of applying intersectional perspectives in science! www.nature.com/articles/s41...
nature.com
Intersectional analysis for science and technology - Nature
This Perspective offers a guide for researchers, peer-reviewed journals and funding agencies to make quantitative intersectional approaches a standard part of science and technology research design, w...
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Indivisible ❌👑 @indivisible.org · 05/04/2025
💙 DC never disappoints. #handsoff
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Dr. Lucky Tran @luckytran.com · 05/04/2025
Wow. #HandsOff rally in St. Paul, Minnesota is massive!
Massive crowd at Hands Off rally in St. Paul, Minnesota
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