David C. Vaidis
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vaidis.bsky.social
David C. Vaidis
@vaidis.bsky.social
97 followers 68 following 54 posts
Professor in Social Psychology at Université de Toulouse, France
Interested in Psychological Science, Cognitive Dissonance, Meta-Science, Epistemology, History of Science, Societal Impact, Human Development...
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vaidis.bsky.social
I didn't want to get into this discussion, but after seeing strong reactions to Kelly (2025), I think it's worth helping colleagues think more critically about what the paper actually shows—and doesn't show.
Spoiler: not the bombshell some claim.
#SocialPsychology #CognitiveDissonance
Debunking “When Prophecy Fails”
In 1954, Dorothy Martin predicted an apocalyptic flood and promised her followers rescue by flying saucers. When neither arrived, she recanted, her group dissolved, and efforts to proselytize ceased.....
onlinelibrary.wiley.com
November 8, 2025 at 12:54 PM
vaidis.bsky.social
Excited to be in Limerick for a few days, collaborating with @paulmaher.bsky.social, and presenting a talk today on cognitive dissonance and the replication crisis! @ulpsych.bsky.social
a slide of presentation of a talk about cognitive dissonance and the replication crisis
November 3, 2025 at 11:40 AM
vaidis.bsky.social
🎉👶 Welcome to the last new born in the Open Science effort!
Replication Research is a diamond open access journal dedicated to robust, transparent and reproducible science.

#OpenScience #ScientificPublication #Replication #OpenAccess
Replication Research
Replication Research is a diamond open-access and researcher-led journal that publishes reproductions, replications, and conceptual articles on repetitive research
www.uni-muenster.de
October 10, 2025 at 10:57 AM
Reposted by David C. Vaidis
irisvanrooij.bsky.social
Was looking into what Cognitive Scientists mean by ‘domain-general’ cognition, and then hit upon this. This is definitely NOT how we use that term.

Tip: read the last sentence to understand what went wrong here.

Sigh.
Domain-General Cognitive Ability In subject area: Psychology Domain-general cognitive abilities refer to cognitive skills that are not unique to humans but are present across various primate species and potentially other mammals and birds, indicating a general factor underlying cognitive performance that correlates with brain size and is associated with selective attention and working memory capacity. AI generated definition based on: Trends in Cognitive Sciences, 2012
August 4, 2025 at 10:17 PM
vaidis.bsky.social
Oups. 😄 It seems my close colleague forgot to cut my joke at the end of the sentence... And then not the editor, nor the people in charge of editing considered necessary to change it before publication! #SciencePublication #FunButSad #SadButTrue #FrenchAcademic
August 12, 2025 at 3:32 PM
vaidis.bsky.social
240,245 participants in a single study, not too bad. The effect size is modest, but ecological validity is high due to real-world implementation! #BehavioralScience #SocialPsychology #Megastudy #ClimateChange #ImplementationScience
www.sciencedirect.com/science/arti...
Redirecting
doi.org
August 10, 2025 at 9:38 AM
vaidis.bsky.social
The 4th Big Team Science Conference (aka #BTSCON) will be held online October 6-8. A unique opportunity to discuss, join and anticipate the future of BTS. Registration is free/'what you can' but beware submission deadline is short! (31st July). bigteamscienceconference.github.io/submissions/
#psysci
submissions
>>> Submit your abstract here! Submissions for all session types are now open! * *Panels, hackathons, and symposia:* maximum 500 words * *Talks, lightning talks, and unconferences:* maximum 250 words ...
bigteamscienceconference.github.io
July 8, 2025 at 5:56 AM
Reposted by David C. Vaidis
improvingpsych.org
Awarded projects will receive:
✔️ Research funding from SIPS (up to $2,000 USD)
✔️ A recommendation decision from PCI-RR.

Deadline: August 1st.

🔗 More details: buff.ly/AigqCod
June 2025
The Society for the Improvement of Psychological Science (SIPS) and Peer Community In Registered Reports (PCI-RR), together invite researchers to submit empirical research projects for consideration…
improvingpsych.org
July 7, 2025 at 5:36 PM
vaidis.bsky.social
Shame on Wiley!
pci-regreports.bsky.social Peer Community in Registered Reports @pci-regreports.bsky.social · Jun 17
NEW: Statement from the PCI RR Managing Board on the withdrawal of Infant and Child Development as a PCI RR-friendly journal, and the decision by Wiley to refuse preprints that have been peer-reviewed by @peercommunityin.bsky.social / @pci-regreports.bsky.social

Read here ➡️ osf.io/tn8mh
In 2024, Infant and Child Development (ICD) withdrew as a PCI RR-friendly journal and reneged on three Stage 1 recommendations issued by PCI RR. In addition, Wiley – the publisher of ICD – notified PCI RR and the PCI core team of its decision to withdraw all Wiley journals from PCI and PCI RR, including an additional 9 PCI-friendly journals. Finally, Wiley appears to have banned all of its ~1600 journals from considering submissions that have been previously reviewed by PCI or PCI RR. This statement explains the history of ICD joining PCI RR and developments that led to the current outcome. The PCI RR Managing Board believes that this shift in policy to become “PCI-hostile” renders Wiley journals incompatible not only with community-based preprint review but with preprint archiving in general.
June 17, 2025 at 2:37 PM
Reposted by David C. Vaidis
adrips-comm.bsky.social
Ce fut une rencontre fort plaisante. Encore merci à tou•tes les communicant•es, au comité d'organisation et à toutes les personnes ayant assistées au CJC2025.

A bientôt pour une prochaine rencontre de l'ADRIPS !

#ADRIPS #CJC2025 #Besançon
June 4, 2025 at 2:00 PM
vaidis.bsky.social
In France, only 3% of public spending goes to research — just €27B budgeted for 2025. Shockingly low for a country that prides itself on innovation.

🧪 Underfunded labs
🧠 Brain drain
🏫 Poor faculty conditions

Investing in the future isn’t optional.
#Research #Science #France #WhereGoesTaxes
June 3, 2025 at 3:23 PM
vaidis.bsky.social
Great having @protzko.bsky.social at the (big) Lab these past two weeks! Inspiring discussions and exciting ideas in #metascience.
Thanks for the engaging talk at the #AtelierMMS (Methodology, MetaScience & Stats Lab Meeting). #UniversitéDeToulouse #UT2J
May 22, 2025 at 1:29 PM
vaidis.bsky.social
Our EIM model paper with Ben Aubert-Teillaud and Alex Bran "Expectation violation and cognitive dissonance theory" was among the top 10% most viewed in EJSP in 2023... Good for an 'august' paper ! 😏
📄 onlinelibrary.wiley.com/doi/full/10....

#CognitiveDissonance #FormalizedModel #SocialPsychology
Expectation violation and cognitive dissonance theory: Proposal for an epistemic inconsistency management model
A crucial dilemma for any individual facing contradictory information is whether to maintain or disengage from an expectation. Cognitive dissonance theory offers an influential model of these situati...
onlinelibrary.wiley.com
April 16, 2025 at 12:21 PM
vaidis.bsky.social
Comment aider les chercheurs disposant de moins de ressources ou des réseaux moins développés à faire de la recherche ? L'étude bit.ly/GrEenwIch cartographie cela et s'adresse à des C, EC et post-doc. 20GBP à la clé pour les participants (voucher ou don). #FrenchAcademic #recherche à diffuser
Online Survey Software | Qualtrics Survey Solutions
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bit.ly
April 5, 2025 at 7:30 AM
vaidis.bsky.social
Toulouse University, France, offers refuge to US researchers in fields under threat by the Trump administration.
www.univ-toulouse.fr/actualites/c...
#UniversitédeToulouse #Academicsky #ScienceNotSilence
La communauté universitaire toulousaine tend la main aux chercheurs américains en difficulté | Communauté d'universités et établissements de Toulouse
Face aux menaces et aux coupes budgétaires drastiques et ciblées qui frappent la recherche aux États-Unis, le site universitaire toulousain propose d’accueillir des chercheuses et chercheurs dont les ...
www.univ-toulouse.fr
April 1, 2025 at 12:36 PM
vaidis.bsky.social
⚠️ Nous recherchons des chercheur-euse-s (C, EC, post-doc) pour participer à une étude collaborative internationale menée par l'Université de Greenwich. #FrenchAcademic #FrenchUniversities

📌 Lien vers l’étude : bit.ly/GrEenwIch

Attention : les doctorants ne font pas partie de la population cible.
March 18, 2025 at 1:32 PM
Reposted by David C. Vaidis
hongch.bsky.social
How accurately do citations reflect the original research? Do authors truly engage with what they cite?

In a new study, we analyze millions of citation sentence pairs to measure citation fidelity and how it varies depending on authors’ engagement with prior literature.

arxiv.org/abs/2502.20581

⬇️
March 11, 2025 at 1:29 AM
vaidis.bsky.social
Another time, other practices, other threats. Yet in this dark period, Merton's take on the norms of science remains strikingly contemporary, relevant and necessary! #ElonMusk #Science #Openscience #Metascience #academicsky

law.unimelb.edu.au/__data/asset...
law.unimelb.edu.au
March 6, 2025 at 3:02 PM
vaidis.bsky.social
A meta-epistemological problem... In short, this resolves the replication crisis with an upper class problem, as understanding knowledge itself IS the problem! Happy Friday.
The tautology problem of epistemology
Epistemology is faced with a fundamental dilemma that is reminiscent of Baron Munchausen’s famous attempt to pull oneself out of the swamp…
medium.com
February 28, 2025 at 8:50 AM
vaidis.bsky.social
US is firing researchers? Bad news 😤 (stupid choice) but lucky opportunity for you! Liberty🗽 🇫🇷 France's application session is opening very soon! Transparent process, tenured positions and now a much easier portal in English. odyssee.enseignementsup-recherche.gouv.fr/accueil?lang... #sciencesky
Odyssée
odyssee.enseignementsup-recherche.gouv.fr
February 16, 2025 at 8:45 AM
vaidis.bsky.social
Got the same from France, with translation. Due to its allegiance and the power we grant it, Google threatens democracy by rewriting history. What a shame! #Google #democracy #MakeAmericaAdultAgainNotDangerousBullyingAsshole
alexh.bsky.social Alex Holcombe @alexh.bsky.social · Feb 11
holy capitulation to clowns. Google's even doing this to us here in Australia
February 11, 2025 at 2:55 PM
vaidis.bsky.social
We talk a lot about predatory journals, but I just encountered my first PREDATORY PODCAST!🚨 www.scipod.global
They reach out, set up a meeting, then—when you ask about their economic model—you realize they want £1000 for a 10-min recorded podcast. That’s here you run away.
#PredatoryJournal #Scisky
February 10, 2025 at 1:38 PM
Reposted by David C. Vaidis
grahamkendall.bsky.social
"Editors resign from Springer immunology journal to launch nonprofit title" | @RetractionWatch.com | https://buff.ly/3CD3rco
February 10, 2025 at 7:39 AM
vaidis.bsky.social
Hoooops too bad. I won't change my practice concerning RR but I will delve into their registered report! I also think that finally, RRR are RR but I bet they are much more cited than any regular paper!
markrubin.bsky.social Mark Rubin @markrubin.bsky.social · Feb 4
New study finds Registered Reports have lower citation counts than non-Registered Reports

doi.org/10.1037/amp0...
After more than a decade of practice, registered reports (RRs) are widely adopted in psychology. However, the acceptance of RRs in terms of postpublication academic recognition and public dissemination, compared with nonregistered reports (non-RR), remained largely unexplored. This matched meta-evaluation identified and analyzed 119 pairs of original research articles (RR vs. non-RR) from 33 psychology journals, matched for the journal of publication, time of publication, and research topic. The exploratory results show that RRs significantly reduced publication bias against null results and improved method and data transparency. However, RRs had lower citation counts than non-RRs, with a small effect size when controlling for days since publication. Additional exploratory analyses found that this effect remained significant after controlling for null-result reporting, transparency, the number of studies in an article and length of method and result sections, article title perception, open access, and authorship metrics (including the number of authors, the h-index of the first or corresponding authors). The overall public impact indexed by Altmetric attention scores and the number of Twitter posts were not significantly different between RRs and non-RRs. However, Twitter posts, but not citations and Altmetric attention scores, were moderated by journal reputation, with RRs receiving more attention in lower impact journals (5-year impact factor below 4.5). These exploratory findings help generate testable hypotheses about the potential differential effects of RRs on academic recognition and public attention, informing future directions for open science practice.
February 4, 2025 at 6:43 PM
Reposted by David C. Vaidis
minzlicht.bsky.social
Roy Baumeister called ego depletion "one of the most replicable findings in social psychology." As someone who spent 20 years studying it—and ultimately had to admit it wasn't real—I have to respectfully disagree. Here's my perspective of what went so wrong.
The Collapse of Ego Depletion
Science's Biggest Self-Control Failure
open.substack.com
January 29, 2025 at 2:49 PM