Olivier Klein
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olivierklein.bsky.social
Olivier Klein
@olivierklein.bsky.social
4K followers 1.2K following 120 posts

Professor of social psychology at Université libre de Bruxelles, Belgium. Daily 🚴 .

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Olivier Klein is a French politician who served as Minister Delegate of Cities and Housing in the government of Prime Minister Élisabeth Borne from 2022 to 2023.

Source: Wikipedia
Psychology 36%
Political science 21%
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olivierklein.bsky.social
Olivier Klein @olivierklein.bsky.social · Nov 17
As anti-vax RFK will become US health secretary, now may be a good time to read our little book on the psychology of vaccination. www.routledge.com/The-Psycholo...
The Psychology of Vaccination
Why do some people choose to be vaccinated and others do not? What is the difference between vaccine hesitancy and anti-vaccinism? What can social psychology tell us about attitudes towards vaccinatio...
www.routledge.com

Reposted by Olivier Klein

paulbertin.bsky.social
Paul Bertin @paulbertin.bsky.social · 10d
Shout-out to the best possible team of co-authors: Elisa Tognon, @kenzonera.bsky.social, @rritabajraktari.bsky.social, Vincent Yzerbyt, @olivierklein.bsky.social, and Klein Pit (who originally started this project).

OA here: onlinelibrary.wiley.com/doi/10.1002/...
The Impact of Freedom of Speech on Conspiracy Beliefs
Conspiracy beliefs are often portrayed as a threat to democracies. However, less is known about the extent to which the state of democracy may affect conspiracy beliefs. Hence, we investigated the im...
onlinelibrary.wiley.com

Reposted by Olivier Klein, Robert C. Richards, Ann Bartow

kylegriffin1.bsky.social
Kyle Griffin @kylegriffin1.bsky.social · Oct 11
A library director in Wyoming who was fired two years ago because she refused to remove books with sexual content and LGBTQ themes from a library's children and young adult sections has just been awarded $700,000 in a settlement. t.co/EA5L1kOZfV
https://www.nytimes.com/2025/10/09/us/wyoming-library-settlement-book-bans-terri-lesley.html?smtyp=cur&smid=fb-nytimes&fbclid=IwdGRjcANWLXdleHRuA2FlbQIxMQABHhlnY6nKj_j4zuP3VjNSstXWBaV1t8-sPQ5C3b_jS6WN...
t.co

Reposted by Olivier Klein

edwyplenel.bsky.social
Edwy Plenel @edwyplenel.bsky.social · Sep 18
Cinq ans après la pandémie de Covid-19, l’autorité chargée de la politique vaccinale aux États-Unis se réunit à New York. Mais elle est désormais composée d’opposants aux vaccins nommés par le premier d’entre eux, le ministre de la santé Robert Kennedy Jr. www.mediapart.fr/journal/inte...
États-Unis : les antivax prennent le pouvoir sur la santé
L’autorité sanitaire chargée de la politique vaccinale se réunit jeudi et vendredi à New York. Mais cinq ans après le début de la pandémie de covid-19, elle est désormais composée d’opposants aux vac…
www.mediapart.fr

Reposted by Nick Couldry, Olivier Klein, Paul G. Lewis , and 4 more

benpatrickwill.bsky.social
Ben Williamson @benpatrickwill.bsky.social · Sep 6
Journal publishers *are* bundling your papers up in "data licensing agreements" for big tech companies to use for AI model training. Our publisher, T&F, got £75m from Microsoft for that last year alone.

Reposted by Peter Thorne, Gavin L. Foster, Olivier Klein , and 19 more

adamjkucharski.bsky.social
Adam Kucharski @adamjkucharski.bsky.social · Sep 1
Results so stunningly clear they inspired this classic xkcd (xkcd.com/2400/):

Reposted by Richard S.J. Tol, Olivier Klein, Scott L. Greer , and 13 more

brenttoderian.bsky.social
Brent Toderian @brenttoderian.bsky.social · Aug 29
“Over the past 20 years, Paris has undergone a major physical transformation, trading automotive arteries for bike lanes, adding green spaces and eliminating 50,000 parking spaces.

Part of the payoff has been invisible — in the air itself.”

Leadership, strategy, real action, common sense. #Paris
Paris said au revoir to cars. Air pollution maps reveal a dramatic change.
Air pollution fell substantially as the city restricted car traffic and made way for parks and bike lanes.
www.washingtonpost.com

olivierklein.bsky.social
Olivier Klein @olivierklein.bsky.social · Aug 29
This post has not aged badly unfortunately.

Reposted by Jan W. Mueller, Olivier Klein, Scott L. Greer , and 13 more

annetteyreed.bsky.social
Annette Yoshiko Reed @annetteyreed.bsky.social · Aug 27
“Chicago has long helped to keep alive tiny fields & esoteric areas of humanistic study... Without the univ’s support, & the continued training of grad students who can keep these bodies of kn going, entire spheres of human learning might eventually blink out.” www.theatlantic.com/culture/arch...
If the University of Chicago Won’t Defend the Humanities, Who Will?
Why it matters that the University of Chicago is pausing admissions to doctoral programs in literature, philosophy, the arts, and languages
www.theatlantic.com

Reposted by Olivier Klein, Armelle Andro, Klaus Oschema , and 1 more

vincent-lemire.bsky.social
Vincent Lemire @vincent-lemire.bsky.social · Aug 23
Plus envie d'argumenter, plus envie de documenter. Tout est là, sous nos yeux. Mais comment faire prendre conscience de ce qu'est une famine?

Reposted by Lisa W. Fazio, Olivier Klein, Hugo Mercier , and 3 more

mehr.nz
samuel mehr @mehr.nz · Aug 20
My dept at the University of Auckland (NZ) will be hiring in social psych at the junior level this cycle. Official ad to follow

It's a big research-active dept with fun colleagues, plus you can commute to uni on a boat, paired with a pleasant walk thru Albert Park (this pic from heading home today)
Late afternoon sun in Albert park

Reposted by Gordon Hodson, Olivier Klein, Sabine Pahl

brenttoderian.bsky.social
Brent Toderian @brenttoderian.bsky.social · Aug 19
As our kids go #BackToSchool, never forget that we ARE the traffic that we’re afraid of. If more kids walked, biked or rode transit to school, it would erase a massive number of car trips each day, and our kids would be safer, healthier and better at school. HT Ian Lockwood.

Spread the word.
Cartoon illustrating, how traffic induces more traffic. “There is too much traffic for Billy to walk to school, so we drive him.”

Reposted by Olivier Klein

sciencepoulb.bsky.social
Sciencepo ULB @sciencepoulb.bsky.social · Jul 31
[Job] The Policy Lab at @ulbruxelles.bsky.social seeks to recruit a postdoctoral researcher (full time, 2 years) in the framework of the project 'Metropolitan internet meets post-growth'
Deadline: 30 August

olivierklein.bsky.social
Olivier Klein @olivierklein.bsky.social · Jul 31
Merci pour ce gigantesque travail, qui n’a pas l’écho qu’il mérite.

Reposted by Olivier Klein

dingdingpeng.the100.ci
Julia M. Rohrer @dingdingpeng.the100.ci · Jul 28
New blog post! Calculating a correlation is easy enough. But let's say you calculated two of them and they happen to differ. What follows from that? Turns out there are too many moving parts for an easy answer.

www.the100.ci/2025/07/28/w...
What’s in a correlation?
Correlation may not imply causation, but let’s just ignore that for a second. Correlations are standardized effect size metrics and as such have some quirks by design. These are benign enough when you...
www.the100.ci

Reposted by Olivier Klein, Martin Paul Eve, Felicity Callard , and 1 more

jgcarpenter.com
Julie Carpenter, PhD @jgcarpenter.com · Jul 26
I'm quoted in this piece. In short: do not use ChatGPT or any generative AI as a “therapist.” It’s not sentient. It doesn’t care. It may even lead people toward harm. And nothing shared is protected by HIPAA or real privacy standards; it's fodder for the machine. www.dazeddigital.com/life-culture...
AI is transforming how we communicate in relationships
‘All I wanted was to feel seen, heard and understood by him, but instead, he was sending me a robot’s questions’
www.dazeddigital.com

olivierklein.bsky.social
Olivier Klein @olivierklein.bsky.social · Jul 26
www.nytimes.com/2025/07/26/w...
No Proof Hamas Routinely Stole U.N. Aid, Israeli Military Officials Say
www.nytimes.com

Reposted by Olivier Klein

kenzonera.bsky.social
Kenzo Nera @kenzonera.bsky.social · Jun 24
🎉Starting September 1st, I'll be an Associate Editor for the British Journal of Social Psychology (BJSP). It is a great honor! 🎉

I won't make jokes about bribery options to get your paper published through me, as I am not sure yet if I'm allowed to* and I don't want to be fired before I start. 1/2

Reposted by Olivier Klein

lesoir.be
Le Soir @lesoir.be · Jul 15
Ils veulent assassiner un magistrat, indignons-nous
Ils veulent assassiner un magistrat, indignons-nous
La menace qui pèse actuellement sur la vie de Julien Moinil, procureur du Roi de Bruxelles, est de nature différente : ils veulent assassiner l’un des principaux visages de la lutte contre le narcotrafic. Et devant cette situation extrêmement choquante, quasi aucune réaction du monde politique.
www.lesoir.be

olivierklein.bsky.social
Olivier Klein @olivierklein.bsky.social · Jul 10
Great! And thanks for curating this list. Super useful and it’s indeed where the action happen(ed)s.

Reposted by Olivier Klein, Catherine E. De Vries

gordonhodsonphd.bsky.social
Gordon Hodson @gordonhodsonphd.bsky.social · Jul 9
Clear advice from @catherinedevries.bsky.social on clear writing.

Who could argue with such solid advice? (he naively asks the internet)
A Rough Guide to Writing Clearly To write clearly is to take your readers seriously. It means refusing the safety of abstraction and meeting the moment with language that informs rather than obscures. In the spirit of Orwell’s rules, here’s a working checklist for writing clearly: Spotlight our core claim: Don’t hide an argument behind abstraction. If we believe something, state it plainly. If we're uncertain, say so. Define our terms: Especially in public writing, don’t assume our readers to share our definition of “liberalism,” “resilience,” or “hegemony.” And let’s be just as clear about what we don’t mean. Be specific: Abstract claims are weaker than grounded ones. If we write that “many scholars argue,” be ready to name or quote them. Trim the fat: Ask: Can this be said more clearly? More simply? Our reader’s time is precious, and we should respect it. Avoid the passive: “The report was released” distances cause and effect. Say who did what: “The agency released the report.” Check our tone: Clarity doesn’t require condescension. Be precise without being pedantic, concise without being abrupt. Above all, write to be understood: Don’t write to be clever, to be admired, but write to connect.

Reposted by Olivier Klein

adrienfillon.bsky.social
Adrien Fillon @adrienfillon.bsky.social · Jul 9
Is there a difference between falsification and refutation?

Popper used the former in the book about logic of scientific discovery and the latter in the last (conjecture and refutation). And I never understood the difference.

olivierklein.bsky.social
Olivier Klein @olivierklein.bsky.social · Jul 9
Dan Simons had one. But not sure it’s still accessible.

olivierklein.bsky.social
Olivier Klein @olivierklein.bsky.social · Jul 2
Yes. Very sad. 😞

olivierklein.bsky.social
Olivier Klein @olivierklein.bsky.social · Jun 29
Very sad to learn that Helen De Cruz, who had been a constant online presence for me on Twitter and then here, passed away. Read her last blog post. A little gem on what we leave to others.

Reposted by Olivier Klein

panettonepazzo.bsky.social
Ultimes scories @panettonepazzo.bsky.social · Jun 28
La Pride de Budapest interdite par Orban.
Rien n’arrête les libertés.
Surtout pas le fascisme
Photo montrant des 10aines de milliers de participants à la Pride de Budapest pourtant interdite par le pouvoir d’Orban en Hongrie

olivierklein.bsky.social
Olivier Klein @olivierklein.bsky.social · Jun 24
Lucky BJSP, who has gained a wise, enthusiastic and witty new associate editor!
kenzonera.bsky.social Kenzo Nera @kenzonera.bsky.social · Jun 24
🎉Starting September 1st, I'll be an Associate Editor for the British Journal of Social Psychology (BJSP). It is a great honor! 🎉

I won't make jokes about bribery options to get your paper published through me, as I am not sure yet if I'm allowed to* and I don't want to be fired before I start. 1/2

Reposted by Olivier Klein

ourworldindata.org
Our World in Data @ourworldindata.org · Jun 16
Measles causes more than an acute illness: it suppresses immune memory and increases the risk of complications for years.

Even in a typical case of measles, children who survive the infection recover slowly.

Reposted by Håvard Kauserud, Olivier Klein, Femi Oyebode , and 1 more

krassenstein.bsky.social
Krassensteins @krassenstein.bsky.social · Jun 15
Best image of the day:

Reposted by Olivier Klein, Wim Van Lancker, Patrick S. Forscher , and 1 more

dingdingpeng.the100.ci
Julia M. Rohrer @dingdingpeng.the100.ci · Jun 12
"Simpson's gender-equality paradox" surely deserve some award for best title 👑
The gender-equality paradox seems really central to some narrative people have constructed (and successfully sold). I absolutely wouldn't be surprised if it turned out 100% confounding.>

www.pnas.org/doi/10.1073/...

Reposted by Olivier Klein

lakens.bsky.social
Daniel Lakens @lakens.bsky.social · Apr 4
New episode of @nulliusinverba.bsky.social ! We (very) critically discuss the classic paper by John Ioannidis 'Why most published research findings are false'. What did he get wrong, and why is it still interesting to read the paper? nulliusinverba.podbean.com/e/episode-56...
Episode 56: Cur Plerumque Investigation Publica Falsa Est | Nullius in Verba
Ioannidis, J. P. A. (2005). Why Most Published Research Findings Are False. PLoS Medicine, 2(8), e124. https://doi.org/10.1371/journal.pmed.0020124 Neher, A. (1967). Probability Pyramiding, Research E...
nulliusinverba.podbean.com