Jean-Baptiste
Jean-Baptiste
@jbber.bsky.social
Data analyst, social sciences. I have a particular interest in data visualization and survey design.
Reposted by Jean-Baptiste
The advances we've made in statistics, experimental study design, and causal inference over the past century are remarkably useful for understanding our world. But there is never been a push to make people use them like we are seeing with generative AI. Perhaps take a moment to consider why.
November 7, 2025 at 9:07 AM
Fun fact, a few months ago, LinkedIn blocked access to my account without stating why. They are now asking me to provide a copy of my ID to unblock it. I don't have ID as it's not mandatory here, but no way I'd share it anyway, nowadays data breaches are too frequent to trust companies with that.
DEAR FOLLOWERS - LINKEDIN POSTING SURGE REQUESTED
The lobbying has started!
November 4, 2025 at 11:20 AM
Reposted by Jean-Baptiste
📌 Croissance de la population : une dangereuse obsession

C'est le titre d'un petit article que j'ai rédigé pour la revue Belveder, à la demande de l'Agence d'Urbanisme et d'Aménagement de Toulouse aire métropolitaine (AUAT). C'est par ici revue-belveder.org/index.php/cr... 🧵1/10
Croissance de la population : une dangereuse obsession - BelvedeЯ +
Dans leurs documents de planification, la quasi-totalité des territoires pensent leur développement futur en tablant sur des hypothèses démographiques optimistes. La population du territoire a diminué...
revue-belveder.org
November 4, 2025 at 5:43 AM
Reposted by Jean-Baptiste
People, including academics, spending the last decade or more hyping the predictive performance for these types of tools, and/or avoiding independent elevation of their performance, have a lot to answer for. They've very much helped normalize this ->
New: Videos show ICE/CBP agents are scanning peoples' faces on the street to verify citizenship. ICE has tool to instantly look up unprecedented number of databases with just a photo

“I’m an American citizen so leave me alone”

“Alright, we just got to verify that”

www.404media.co/ice-and-cbp-...
ICE and CBP Agents Are Scanning Peoples’ Faces on the Street To Verify Citizenship
Videos on social media show officers from ICE and CBP using facial recognition technology on people in the field. One expert described the practice as “pure dystopian creep.”
www.404media.co
October 29, 2025 at 6:35 PM
Reposted by Jean-Baptiste
The Python Software Foundation got a competitive US research grant, but it came with a condition that they recant and abjure any diversity and inclusion ideas, on penalty of having to repay the money.

Obviously this is not desirable or safe, so no grant.

Donations would help them not regret this
The PSF has withdrawn $1.5 million proposal to US government grant program
In January 2025, the PSF submitted a proposal to the US government National Science Foundation under the Safety, Security, and Privacy of Open Source Ecosystems program to address structural vulnerabilities in Python and PyPI. It was the PSF’s first time applying for government funding, and navigating the intensive process was a steep learning curve for our small team to climb. Seth Larson, PSF Security Developer in Residence, serving as Principal Investigator (PI) with Loren Crary, PSF Deputy Executive Director, as co-PI, led the multi-round proposal writing process as well as the months-long vetting process. We invested our time and effort because we felt the PSF’s work is a strong fit for the program and that the benefit to the community if our proposal were accepted was considerable. We were honored when, after many months of work, our proposal was recommended for funding, particularly as only 36% of new NSF grant applicants are successful on their first attempt. We became concerned, however, when we were presented with the terms and conditions we would be required to agree to if we accepted the grant. These terms included affirming the statement that we “do not, and will not during the term of this financial assistance award, operate any programs that advance or promote DEI, or discriminatory equity ideology in violation of Federal anti-discrimination laws.” This restriction would apply not only to the security work directly funded by the grant, **but to any and all activity of the PSF as a whole**. Further, violation of this term gave the NSF the right to “claw back” previously approved and transferred funds. This would create a situation where money we’d already spent could be taken back, which would be an enormous, open-ended financial risk. Diversity, equity, and inclusion are core to the PSF’s values, as committed to in our mission statement: > _The mission of the Python Software Foundation is to promote, protect, and advance the Python programming language, and to support and facilitate the growth of**a diverse and international community** of Python programmers._ Given the value of the grant to the community and the PSF, we did our utmost to get clarity on the terms and to find a way to move forward in concert with our values. We consulted our NSF contacts and reviewed decisions made by other organizations in similar circumstances, particularly The Carpentries. In the end, however, the PSF simply can’t agree to a statement that we won’t operate any programs that “advance or promote” diversity, equity, and inclusion, as it would be a betrayal of our mission and our community. We’re disappointed to have been put in the position where we had to make this decision, because we believe our proposed project would offer invaluable advances to the Python and greater open source community, protecting millions of PyPI users from attempted supply-chain attacks. The proposed project would create new tools for automated proactive review of all packages uploaded to PyPI, rather than the current process of reactive-only review. These novel tools would rely on capability analysis, designed based on a dataset of known malware. Beyond just protecting PyPI users, the outputs of this work could be transferable for all open source software package registries, such as NPM and Crates.io, improving security across multiple open source ecosystems. In addition to the security benefits, the grant funds would have made a big difference to the PSF’s budget. The PSF is a relatively small organization, operating with an annual budget of around $5 million per year, with a staff of just 14. $1.5 million over two years would have been quite a lot of money for us, and easily the largest grant we’d ever received. Ultimately, however, the value of the work and the size of the grant were not more important than practicing our values and retaining the freedom to support every part of our community. The PSF Board voted unanimously to withdraw our application. Giving up the NSF grant opportunity—along with inflation, lower sponsorship, economic pressure in the tech sector, and global/local uncertainty and conflict—means the PSF needs financial support now more than ever. We are incredibly grateful for any help you can offer. If you're already a PSF member or regular donor, you have our deep appreciation, and we urge you to share your story about why you support the PSF. Your stories make all the difference in spreading awareness about the mission and work of the PSF. How to support the PSF: * Become a Member: When you sign up as a Supporting Member of the PSF, you become a part of the PSF. You’re eligible to vote in PSF elections, using your voice to guide our future direction, and you help us sustain what we do with your annual support. * Donate: Your donation makes it possible to continue our work supporting Python and its community, year after year. * Sponsor: If your company uses Python and isn’t yet a sponsor, send them our sponsorship page or reach out to [email protected] today. The PSF is ever grateful for our sponsors, past and current, and we do everything we can to make their sponsorships beneficial and rewarding.
pyfound.blogspot.com
October 28, 2025 at 7:16 AM
Reposted by Jean-Baptiste
Submission: I did a thing.

Reviewer: Too bad it’s not the thing I imagined while half-reading your abstract.

Revision: What a coincidence, it is now.
October 27, 2025 at 7:39 AM
Reposted by Jean-Baptiste
Solutions like open science, preregistration and registered reports fall apart in this space because much of the research isn't p-hacked... it's design biased.

For example, the thresholds industry studies use for significance when espousing benefits tend to be looser than identifying harm.
October 24, 2025 at 12:12 AM
Reposted by Jean-Baptiste
I'm excited to finally have a preprint of this paper up, a few years in the making.

In it we argue that industry-driven manipulation of social media research is well underway and that norms and institutions in the field are ill-prepared to resist tech's influence.

arxiv.org/abs/2510.19894
October 24, 2025 at 12:12 AM
Reposted by Jean-Baptiste
Positive story about evidence changing practice for the better
www.1news.co.nz/2025/10/20/a...
Advice to feed babies peanuts helped 60,000 kids avoid allergies
Peanut allergies in children ages 0 to 3 declined by more than 27% after guidance for high-risk kids was first issued in 2015.
www.1news.co.nz
October 20, 2025 at 6:34 AM
Reposted by Jean-Baptiste
We only count the costs for helping people. We never count the costs when hurting people. That makes the math much easier.
October 16, 2025 at 7:06 AM
Reposted by Jean-Baptiste
Looks like a good guide - the general data cleaning part is a lean intro to some very common issues in all sorts of data. Would be great if every phd who touches raw data was offered a short course in these basics (in R or Python or whatever HipsterScript) cleaning-data-r.ala.org.au/2_general-cl...
October 15, 2025 at 9:44 AM
Reposted by Jean-Baptiste
PLEASE SPREAD THE WORD!!

The University of Texas-Austin is beginning a process to eliminate the Black Studies, Latino Studies, and Gender Studies departments in the College of Liberal Arts. This is a grave threat to the educational liberty of students, faculty, staff, and the people of Texas. 1/
October 13, 2025 at 4:37 PM
Reposted by Jean-Baptiste
We should do a study on how much of the funded applied research suffers from problems that the unfunded methods research could have helped prevent or resolve
October 9, 2025 at 2:32 PM
Reposted by Jean-Baptiste
"Uncooperative statistician": the term used (typically by a senior clinician) to describe a well-trained and knowledgeable statistician who refuses to conduct flawed or fraudulent research.
October 3, 2025 at 12:59 PM
Reposted by Jean-Baptiste
A lot of psych is already conducted with online convenience samples & ppl are probably excited about silicon samples bc it would allow them to crank out more studies for even less 💸

How about we reconsider the idea that sciencey science involves collecting own data.
www.science.org/content/arti...
AI-generated ‘participants’ can lead social science experiments astray, study finds
Data produced by “silicon samples” depends on researchers’ exact choice of models, prompts, and settings
www.science.org
October 1, 2025 at 4:17 AM
Reposted by Jean-Baptiste
Science is grounded in observation. Measurement is a tool for observation. Measurements should be evaluated for validity and reliability/uncertainty. Scientists who use measurements without understanding their properties are not really scientists at all.
Can large language models stand in for human participants?
Many social scientists seem to think so, and are already using "silicon samples" in research.

One problem: depending on the analytic decisions made, you can basically get these samples to show any effect you want.

THREAD 🧵
The threat of analytic flexibility in using large language models to simulate human data: A call to attention
Social scientists are now using large language models to create "silicon samples" - synthetic datasets intended to stand in for human respondents, aimed at revolutionising human subjects research. How...
arxiv.org
October 1, 2025 at 5:39 AM
Reposted by Jean-Baptiste
This paper shows that children are significantly less likely to enter the academic track if they come from a low socio-economic status family. A low-intensity mentoring program can improve long-run education outcomes of disadvantaged children and reduce inequality of opportunity.
September 19, 2025 at 4:53 AM
Reposted by Jean-Baptiste
Closing a Department of Statistics, in this day and age, is incredible and shortsighted. Please, read below. I encourage everyone from all over the world to submit their feedback here

apc.unl.edu/fall-2025-bu...
September 16, 2025 at 11:24 AM
Reposted by Jean-Baptiste
Ce n'est peut-être pas évident pour qui n'a jamais travaillé sur le recensement (j'ai été amené à m'assurer de la bonne transmission des consignes de collecte dans un petit nombre de communes) mais c'est une décision de nature à complètement détruire la qualité des données statistiques du pays.
And now the census
August 7, 2025 at 2:36 PM
Reposted by Jean-Baptiste
Success rates

Complicated interventions benefit from pilot studies, where you try to implement the intervention and see how feasible it is.  These are not designed as evaluations of how good the intervention is; they're typically too small for that and they may have insufficient attention paid to…
Success rates
Complicated interventions benefit from pilot studies, where you try to implement the intervention and see how feasible it is.  These are not designed as evaluations of how good the intervention is; they're typically too small for that and they may have insufficient attention paid to representativeness.  You typically still would look at the outcome of the intervention, and you would have some idea of what you hoped to see. 
www.statschat.org.nz
August 8, 2025 at 4:10 AM
Reposted by Jean-Baptiste
Several ppl sent me this extraordinary chart crime. Thank you I love it
August 7, 2025 at 12:09 PM
Reposted by Jean-Baptiste
In our next episode of Nullius In Verba we will dive into the history of metascience. The first mention of 'metascience' in the literature we could find is Morris, 1938. Do you know of an earlier mention of the term 'metascience'?
August 6, 2025 at 4:40 PM
Reposted by Jean-Baptiste
Are frequency and complexity related in Chinese characters/words? Our analysis shows the association is negative but very weak. The article, pre-registration, and data are openly available to whoever wants to read about it. Feel free to drop a comment if you have questions.
doi.org/10.1007/s418...
A tale of two scripts: Applying the principle of least complexity to simplified and traditional Chinese - Journal of Cultural Cognitive Science
Is there a relationship between the frequency of characters and their respective complexity? This hypothesis, which we may call the Principle of Least Complexity, was recently tested across a number o...
doi.org
August 6, 2025 at 8:55 AM
Reposted by Jean-Baptiste
Hey #stats and #methods people!

I will be teaching #psych MA students statistical modelling this year.

I'm looking for podcast *episode* recommendations 🎧

Give me your best!

(See list of topics I will be introducing below:)
August 6, 2025 at 6:44 AM
Reposted by Jean-Baptiste
I was going to write a blog post about this, but I don't think there is enough material to justify this.

I've used the term "Science Support Staff" pejoratively to refer to applied statistics and data science. Obviously, we need science support staff, but the role can grind one down easily.
I don't want to analyze data anymore. I don't want to read your inane method just because you wrote down some integrals.

I want to go to the gym and cook lunch. I want to walk my dog, and read books.
August 5, 2025 at 3:07 AM