Aurélien Allard
@aurelienallard.bsky.social
Philosopher and Social Psychologist. Assistant professor at Nantes University. Studying justice, morality, replicability and open science. Personal website: https://aurelienallard.netlify.app/
Reposted by Aurélien Allard
I started a podcast! Metascience Matters features conversations with metascientists.
Two episodes are live:
Chirag Patel on Exposomics, and Vibration of Effects: youtu.be/RT2nypyb-iM?...
@floriannaudet.bsky.social on Clinical Trials, Registered Reports, and Psychiatry: youtu.be/fn4qtnc99Xo?...
Two episodes are live:
Chirag Patel on Exposomics, and Vibration of Effects: youtu.be/RT2nypyb-iM?...
@floriannaudet.bsky.social on Clinical Trials, Registered Reports, and Psychiatry: youtu.be/fn4qtnc99Xo?...
Exposomics, Vibration-of-Effects, and the Future of AI in Health | Metascience Matters #1
YouTube video by Metascience Matters
youtu.be
January 23, 2026 at 12:49 PM
I started a podcast! Metascience Matters features conversations with metascientists.
Two episodes are live:
Chirag Patel on Exposomics, and Vibration of Effects: youtu.be/RT2nypyb-iM?...
@floriannaudet.bsky.social on Clinical Trials, Registered Reports, and Psychiatry: youtu.be/fn4qtnc99Xo?...
Two episodes are live:
Chirag Patel on Exposomics, and Vibration of Effects: youtu.be/RT2nypyb-iM?...
@floriannaudet.bsky.social on Clinical Trials, Registered Reports, and Psychiatry: youtu.be/fn4qtnc99Xo?...
Reposted by Aurélien Allard
Comparing registrations to published papers is essential to research integrity - and almost no one does it routinely because it's slow, messy, and time-demanding.
RegCheck was built to help make this process easier.
Today, we launch RegCheck V2.
🧵
regcheck.app
RegCheck was built to help make this process easier.
Today, we launch RegCheck V2.
🧵
regcheck.app
RegCheck
RegCheck is an AI tool to compare preregistrations with papers instantly.
regcheck.app
January 22, 2026 at 11:05 AM
Comparing registrations to published papers is essential to research integrity - and almost no one does it routinely because it's slow, messy, and time-demanding.
RegCheck was built to help make this process easier.
Today, we launch RegCheck V2.
🧵
regcheck.app
RegCheck was built to help make this process easier.
Today, we launch RegCheck V2.
🧵
regcheck.app
Reposted by Aurélien Allard
This paper is great up through table 4 -- very nice RCT evidence that free gym increases exercise and course completion.
At table 5, they start controlling for post-treatment variables and drawing unsupported conclusions about mechanisms.
Remove to improve!
At table 5, they start controlling for post-treatment variables and drawing unsupported conclusions about mechanisms.
Remove to improve!
University students who were provided with a free gym card (in a randomized experiment) exercised more and had a significant improvement in academic performance. The treated students were also less likely to drop out of classes
www.journals.uchicago.edu/doi/full/10....
www.journals.uchicago.edu/doi/full/10....
University of Chicago Press Journals: Cookie absent
www.journals.uchicago.edu
November 24, 2025 at 9:47 PM
This paper is great up through table 4 -- very nice RCT evidence that free gym increases exercise and course completion.
At table 5, they start controlling for post-treatment variables and drawing unsupported conclusions about mechanisms.
Remove to improve!
At table 5, they start controlling for post-treatment variables and drawing unsupported conclusions about mechanisms.
Remove to improve!
Reposted by Aurélien Allard
A colleague at MPI asked how to get better at math. My vote is Thompson and Gardner's classic *Calculus Made Easy* (originally published in 1910!) I've uploaded my own (almost complete) worked problem sets from this classic book. A few thoughts.../
January 20, 2026 at 11:00 AM
A colleague at MPI asked how to get better at math. My vote is Thompson and Gardner's classic *Calculus Made Easy* (originally published in 1910!) I've uploaded my own (almost complete) worked problem sets from this classic book. A few thoughts.../
Reposted by Aurélien Allard
I spend more and more time on Substack. I find it surprisingly good and stimulating. You can find me here: substack.com/@sachaaltay
Sacha Altay | Substack
Postdoc working on misinformation, misperceptions, social media & trust.
substack.com
January 20, 2026 at 1:38 PM
I spend more and more time on Substack. I find it surprisingly good and stimulating. You can find me here: substack.com/@sachaaltay
Reposted by Aurélien Allard
One common criticism of research on conspiracy mentality is that real conspiracies do exist. But of course they do!
Believe or not to Believe in Conspiracy Claims? That is a Question for Signal Detection Theory: https://osf.io/sdqp3
January 20, 2026 at 9:32 AM
One common criticism of research on conspiracy mentality is that real conspiracies do exist. But of course they do!
Reposted by Aurélien Allard
Many think LLM-simulated participants can transform behavioral science. But there's been a lack of accessible discussion of what it means to validate LLMs for behavioral scientists. Under what conditions can we trust LLMs to learn about human parameters? Our paper maps the validation landscape.
1/
1/
December 18, 2025 at 5:53 PM
Many think LLM-simulated participants can transform behavioral science. But there's been a lack of accessible discussion of what it means to validate LLMs for behavioral scientists. Under what conditions can we trust LLMs to learn about human parameters? Our paper maps the validation landscape.
1/
1/
Reposted by Aurélien Allard
OSF preprints disappeared, PsyArXiv moderators think that I am not doing psychology; what are the alternatives for posting preprints? SSRN owned by Elsevier? Are there some better options?
January 19, 2026 at 10:35 AM
OSF preprints disappeared, PsyArXiv moderators think that I am not doing psychology; what are the alternatives for posting preprints? SSRN owned by Elsevier? Are there some better options?
Reposted by Aurélien Allard
Using this as an excuse to re-share this meme
January 16, 2026 at 3:39 PM
Using this as an excuse to re-share this meme
Reposted by Aurélien Allard
J'apprends donc que le NJEM AI a "un processus fast track" : "un éditeur évalue lui-même le manuscrit, demande à deux IA génératives différentes – GPT5 et Gemini 2.5 – leurs avis, puis présente le tout devant l’équipe éditoriale."
Question donc : le format de publication a encore du sens ?
Question donc : le format de publication a encore du sens ?
🟢 Les robots à la relecture
L’IA générative ajoute un stress pour les auteurs soumettant leur manuscrit à une revue : les reviewers l’ont-ils passé à la moulinette de ChatGPT ? Si oui, que vaut leur relecture ?
Des réponses dans notre analyse de la semaine :
themeta.news/bientot-revi...
L’IA générative ajoute un stress pour les auteurs soumettant leur manuscrit à une revue : les reviewers l’ont-ils passé à la moulinette de ChatGPT ? Si oui, que vaut leur relecture ?
Des réponses dans notre analyse de la semaine :
themeta.news/bientot-revi...
January 16, 2026 at 4:43 PM
J'apprends donc que le NJEM AI a "un processus fast track" : "un éditeur évalue lui-même le manuscrit, demande à deux IA génératives différentes – GPT5 et Gemini 2.5 – leurs avis, puis présente le tout devant l’équipe éditoriale."
Question donc : le format de publication a encore du sens ?
Question donc : le format de publication a encore du sens ?
Reposted by Aurélien Allard
🇫🇷 We are hiring 🇫🇷
Assistant or Associate Professor Position in Computational Sociology @crestsociology.bsky.social @ipparis.bsky.social
Details here (please RT)
www.shorturl.at/E57le
Assistant or Associate Professor Position in Computational Sociology @crestsociology.bsky.social @ipparis.bsky.social
Details here (please RT)
www.shorturl.at/E57le
October 20, 2025 at 2:40 PM
🇫🇷 We are hiring 🇫🇷
Assistant or Associate Professor Position in Computational Sociology @crestsociology.bsky.social @ipparis.bsky.social
Details here (please RT)
www.shorturl.at/E57le
Assistant or Associate Professor Position in Computational Sociology @crestsociology.bsky.social @ipparis.bsky.social
Details here (please RT)
www.shorturl.at/E57le
Reposted by Aurélien Allard
Some day, OSF's integration into my workflows as the go-to repository for research data will be seamless.
But not today.
But not today.
January 16, 2026 at 10:23 AM
Some day, OSF's integration into my workflows as the go-to repository for research data will be seamless.
But not today.
But not today.
Reposted by Aurélien Allard
The kings also set up a huge section for their young children, expecting that many of them would die. But with falling child mortality, many of the graves have remained empty.
Credit to Bastian for the photo and this perspective.
Credit to Bastian for the photo and this perspective.
January 16, 2026 at 8:18 AM
The kings also set up a huge section for their young children, expecting that many of them would die. But with falling child mortality, many of the graves have remained empty.
Credit to Bastian for the photo and this perspective.
Credit to Bastian for the photo and this perspective.
Reposted by Aurélien Allard
Get that nice shiny "preregistered" badge while retaining full analytic flexibility with this one simple trick (preregistering your analysis plan as "we will analyze the effect of the IVs on the DVs") 🫠
January 16, 2026 at 8:57 AM
Get that nice shiny "preregistered" badge while retaining full analytic flexibility with this one simple trick (preregistering your analysis plan as "we will analyze the effect of the IVs on the DVs") 🫠
Reposted by Aurélien Allard
I started reading up on the whole "loneliness pandemic" narrative because this seems like a literature where the age-period-cohort problem may be relevant (or maybe it isn't?).
Here's data from Australia (HILDA), average agreement with the statement "I often feel very lonely" (SD of ca. 1.8).>
Here's data from Australia (HILDA), average agreement with the statement "I often feel very lonely" (SD of ca. 1.8).>
January 15, 2026 at 1:24 PM
I started reading up on the whole "loneliness pandemic" narrative because this seems like a literature where the age-period-cohort problem may be relevant (or maybe it isn't?).
Here's data from Australia (HILDA), average agreement with the statement "I often feel very lonely" (SD of ca. 1.8).>
Here's data from Australia (HILDA), average agreement with the statement "I often feel very lonely" (SD of ca. 1.8).>
Reposted by Aurélien Allard
It would be nice if we could simultaneously control for cohort and age. But it is impossible. We cannot compare [20y.o.s from the 1990 cohort] in 2010 with [20y.o.s from the 1990 cohort] in 2020. Because in 2020, the 1990 cohort will be 30. And 20y.o.s will belong to the 2000 cohort.>
January 15, 2026 at 1:24 PM
It would be nice if we could simultaneously control for cohort and age. But it is impossible. We cannot compare [20y.o.s from the 1990 cohort] in 2010 with [20y.o.s from the 1990 cohort] in 2020. Because in 2020, the 1990 cohort will be 30. And 20y.o.s will belong to the 2000 cohort.>
Reposted by Aurélien Allard
I am reading "Killer Instinct: The popular science of human nature in 20th century America" by Nadine Weidman, and I am learning a lot. I was aware that Konrad Lorenz (father of field of ethology, winner of 1973 Nobel prize) was a Nazi, but didn't know he was so enthusiastic about it.
January 15, 2026 at 12:25 PM
I am reading "Killer Instinct: The popular science of human nature in 20th century America" by Nadine Weidman, and I am learning a lot. I was aware that Konrad Lorenz (father of field of ethology, winner of 1973 Nobel prize) was a Nazi, but didn't know he was so enthusiastic about it.
Reposted by Aurélien Allard
New paper – and my first ✨Registered Report✨: Do hormonal contraceptives affect women’s sexuality?
We studied both average effects and individual differences in effects using longitudinal data: doi.org/10.1177/2700...
We studied both average effects and individual differences in effects using longitudinal data: doi.org/10.1177/2700...
Positive Treatment Effects and High Heterogeneity of Hormonal Contraceptive Use on Women’s Sexuality - Laura J. Botzet, Julia M. Rohrer, Lars Penke, Ruben C. Arslan, 2026
Different women experience hormonal contraceptives differently, reporting side effects on their sexuality that range from negative to positive. But research on ...
doi.org
January 15, 2026 at 8:14 AM
New paper – and my first ✨Registered Report✨: Do hormonal contraceptives affect women’s sexuality?
We studied both average effects and individual differences in effects using longitudinal data: doi.org/10.1177/2700...
We studied both average effects and individual differences in effects using longitudinal data: doi.org/10.1177/2700...
Reposted by Aurélien Allard
This is a belated post about our paper in @poqjournal.bsky.social.
We analyzed 100 survey experiments fielded by TESS (tessexperiments.org), using only information from the proposals to identify intended hypotheses.
Here are some of the things we learned:
We analyzed 100 survey experiments fielded by TESS (tessexperiments.org), using only information from the proposals to identify intended hypotheses.
Here are some of the things we learned:
An Audit of Social Science Survey Experiments
Abstract. Survey experiments have become a popular methodology for causal inference across the social sciences. We study the efficacy of survey experiment
doi.org
January 14, 2026 at 7:17 PM
This is a belated post about our paper in @poqjournal.bsky.social.
We analyzed 100 survey experiments fielded by TESS (tessexperiments.org), using only information from the proposals to identify intended hypotheses.
Here are some of the things we learned:
We analyzed 100 survey experiments fielded by TESS (tessexperiments.org), using only information from the proposals to identify intended hypotheses.
Here are some of the things we learned:
Reposted by Aurélien Allard
Well, my New Year's resolution is to read less (seriously). But made it through lots of great books this year, including several from fields I'm less familiar with. Here are 10 books I gave 5 stars to this year along with an excerpt (usually belief-related; I have a type) from each
December 31, 2025 at 10:41 PM
Well, my New Year's resolution is to read less (seriously). But made it through lots of great books this year, including several from fields I'm less familiar with. Here are 10 books I gave 5 stars to this year along with an excerpt (usually belief-related; I have a type) from each
Reposted by Aurélien Allard
So, firstly, this paper is extremely disingenuous. The authors used 5 different forms of vitamin D supplementation. The entire effect is derived from a comparison between 1 of these groups and a control group who got unfortified milk.
December 17, 2025 at 4:42 AM
So, firstly, this paper is extremely disingenuous. The authors used 5 different forms of vitamin D supplementation. The entire effect is derived from a comparison between 1 of these groups and a control group who got unfortified milk.
Reposted by Aurélien Allard
still one of the best explanations of principal component analysis (pca), explained at different levels from layman to the more math inclined stats.stackexchange.com/a/140579/132...
Making sense of principal component analysis, eigenvectors & eigenvalues
In today's pattern recognition class my professor talked about PCA, eigenvectors and eigenvalues.
I understood the mathematics of it. If I'm asked to find eigenvalues etc. I'll do it correctly li...
stats.stackexchange.com
January 13, 2026 at 3:51 PM
still one of the best explanations of principal component analysis (pca), explained at different levels from layman to the more math inclined stats.stackexchange.com/a/140579/132...
Reposted by Aurélien Allard
I've been working for ages on a comprehensive revamp of the Stanford Encyclopedia Entry on "Animal Consciousness", with new sections on non-Western perspectives, methodological challenges and evolutionary big pictures, and it's out today: plato.stanford.edu/entries/cons.... Hope you find it useful!
January 13, 2026 at 3:00 PM
I've been working for ages on a comprehensive revamp of the Stanford Encyclopedia Entry on "Animal Consciousness", with new sections on non-Western perspectives, methodological challenges and evolutionary big pictures, and it's out today: plato.stanford.edu/entries/cons.... Hope you find it useful!
Reposted by Aurélien Allard
Me: surely at least the statistics literature has its house in order.
The stats literature:
The stats literature:
January 12, 2026 at 2:58 PM
Me: surely at least the statistics literature has its house in order.
The stats literature:
The stats literature:
Reposted by Aurélien Allard
Interesting paper on estimating the effects of severe climate events.
Link: www.nber.org/papers/w34671
Link: www.nber.org/papers/w34671
January 12, 2026 at 10:00 AM
Interesting paper on estimating the effects of severe climate events.
Link: www.nber.org/papers/w34671
Link: www.nber.org/papers/w34671