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Pierre-Yves de Müllenheim

@pydemullenheim.com
28 followers 51 following 11 posts

Assistant Professor (Angers, France). Skeet wearable device-based methods, sports sciences, statistics, and programming stuff. Author and maintainer of the {activAnalyzer} R package.

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Reposted by Pierre-Yves de Müllenheim
Journal for the Measurement of Physical Behaviour @jmpbjournal.bsky.social · 03/09/2026
📣 We have an active Call for Associate Editors, who help ensure the articles that publish in the journal are rigorously peer reviewed. This is a great opportunity for researchers who want to shape the field through service. More info: journals.humankinetics.com/fileasset/JM... 📅 Deadline: 9/18/26
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SocArXiv @socarxiv.bsky.social · 11/08/2026
Important news from our host, COS. Starting in November SocArXiv users will no longer be able to create new OSF Projects. You will need to host research materials in another repository, such as Zenodo, and link out to them. Existing public projects will be preserved. Preprints service will continue.
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Hadley Wickham @hadley.nz · 23/07/2026
It’s the end of an era: we are sunsetting rpubs.com, quartopub.com, and shinyapps.io in favour of connect.posit.cloud. These services are important, but we need to focus our efforts on a single platform (and it’s overall less confusing to have one place to publish everything you do in R or Python).
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Joel Pick @joelpick.bsky.social · 19/03/2026
I'm excited to announce that the @sortee.bsky.social Guidelines for Data and Code Quality Control in Ecology and Evolutionary Biology are now published in Peer Community Journal peercommunityjournal.org/articles/10....
peercommunityjournal.org
The SORTEE guidelines for data and code quality control in ecology and evolutionary biology
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Daniel Lakens @lakens.bsky.social · 10/03/2026
If you currently do not have a reproducible workflow where you can share data and code where possible, I expect you will soon not be able to publish in good journals. Beyond being best practice, journals will use this to identify papers written by AI. Plan a new project accordingly.
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Daniel Lakens @lakens.bsky.social · 14/08/2025
It can be so frustrating to read STS research. Here are Bartscherer and Reinhart osf.io/rbyt6_v1/ Look at their flawed logic: Replication is *used as a career strategy*. The evidence? People were not known for earlier research. The clear confound? ECR’s drove the replication movement! 1/x
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Frank Harrell @f2harrell.bsky.social · 14/08/2025
New blog article in Statistical Thinking: www.fharrell.com/post/aci/ #Statistics #StatsSky #RStats
fharrell.com
Measures of Central Tendency for an Asymmetric Distribution, and Confidence Intervals – Statistical Thinking
There are three widely applicable measures of central tendency for general continuous distributions: the mean, median, and pseudomedian. Each measure has its own advantages and disadvantages, and the ...
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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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Matthieu Boisgontier @matthieuboisgontier.com · 11/06/2025
Can you make it easier than "the probability of getting results at least as extreme as the ones you observed, given that the null hypothesis is correct"?
fivethirtyeight.com
Not Even Scientists Can Easily Explain P-values
P-values have taken quite a beating lately. These widely used and commonly misapplied statistics have been blamed for giving a veneer of legitimacy to dodgy stu…
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Daniel Lakens @lakens.bsky.social · 17/05/2025
Finally got around to incorporating all Github feedback on my open access textbook, making around 20 minor improvements, and updating some references. 17 chapters of state of the art stats and methods education, freely available for any course you teach. lakens.github.io/statistical_...
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Bruno Rodrigues @brodriguesco.bsky.social · 18/05/2025
Julia works quite well through Nix, but I need to do some further testing and make sure that the top, say, 100 packages build correctly for the list of dates I choose to support (rix::available_dates()). This will become my next milestone for rix.
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Daniel Lakens @lakens.bsky.social · 17/05/2025
Researchers should not make claims based on exploratory analyses because the probability that these claims are wrong can be unacceptably high. doi.org/10.1080/0264...
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Communications in Kinesiology (CiK) @cik.bsky.social · 09/03/2025
We are delighted to now be part of the Free Journal Network, a community of free-to-read and free-to-publish journals like ours! freejournals.org/current-memb...
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Layan Fessler @layanfessler.bsky.social · 03/03/2025
New pre-print out! 🔬In this article, we explain why our clinical trial to improve the automatic tendency to approach PA failed and offer recommendations to help future studies maximise patient acceptability. doi.org/10.1101/2025... @labosens.bsky.social @bcheval.bsky.social
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Bruno Rodrigues @brodriguesco.bsky.social · 03/03/2025
In all my years using #RStats, I’ve seen this kind of posts often. I think that R has evolved past the "traditional" way of using it which was installing it system-wide, and then installing packages system-wide. That worked, because there were less packages, but also because the kind of projects 1/3
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Davis Vaughan @davisvaughan.bsky.social · 21/02/2025
@lionelhenry.bsky.social and I are so excited to finally announce Air - an extremely fast R code formatter! 🎉 With Air, you'll never need to worry about styling your #rstats code ever again. All you need to do is save, and Air takes care of the rest. www.tidyverse.org/blog/2025/02...
tidyverse.org
Air, an extremely fast R formatter
We are thrilled to announce Air, a new R formatter.
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Pierre-Yves de Müllenheim @pydemullenheim.com · 14/02/2025
Now published in PeerJ (@PeerJLife is a PCI friendly journal) without further peer-review and with a few minor adjustments (abstract, figure 5 correction, typos). peerj.com/articles/18885 #Cardiology #Rehabilitation #SportsMedicine
peerj.com
Change in exercise capacity, physical activity and motivation for physical activity at 12 months after a cardiac rehabilitation program in coronary heart disease patients: a prospective, monocentric a...
Background Exercise capacity (EC) and physical activity (PA) are relevant predictors of mortality in patients with coronary heart disease (CHD) but the CHD-specific long-term trajectories of these out...
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Nathan Yau @flowingdata.com · 13/02/2025
Dishonest charts are coming from all directions, and they're only going to hit harder. Unless we push back. So, an interactive guide: Defense Against Dishonest Charts flowingdata.com/projects/dis...
flowingdata.com
Defense Against Dishonest Charts
This is a guide to protect ourselves and to preserve what is good about turning data into visual things.
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Dan Quintana @dsquintana.bsky.social · 05/02/2025
The 'PRISMA2020' R package can used to make both static and interactive 'PRISMA' Flow Diagrams. Thanks to @heeminkang.bsky.social for the tip! cran.r-project.org/web/packages...
cran.r-project.org
PRISMA2020: Make Interactive 'PRISMA' Flow Diagrams
Systematic reviews should be described in a high degree of methodological detail. The 'PRISMA' Statement calls for a high level of reporting detail in systematic reviews and meta-analyses. An integral...
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Matthieu Boisgontier @matthieuboisgontier.com · 12/01/2025
Our new #preprint led by @bcheval.bsky.social is out: Neural correlates of approach-avoidance tendencies toward physical activity & sedentary stimuli: an MRI study. doi.org/10.1101/2025...
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Peer Community In @peercommunityin.bsky.social · 10/01/2025
Here are some 2024 highlights of PCI and Peer Community Journal.📊 Grateful to everyone who contributed to this success🦸. We're excited and prepared for an amazing 2025🤩!
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Eiko Fried @eikofried.bsky.social · 06/01/2025
New Sci Rep paper with odd-looking figures that don't look like any image conversion issue I've seen before. Has some AI vibes (fonts, line spacing of legend), but there are likely better explanations. Any thoughts? @nature.com pls investigate (who copy-edited this) www.nature.com/articles/s41...
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Boris Cheval @bcheval.bsky.social · 30/12/2024
How to move more and reduce sedentary behavior in daily life? 💡 Since September, during my teleworking days, I’ve covered 720 km (the equivalent of over 17 marathons), taken 1.2 million steps, and burned 50,000 Kcal — all during my working hours!
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Matthieu Boisgontier @matthieuboisgontier.com · 31/12/2024
A list of 1,360 predatory publishers 😮 predatoryjournals.org/publisher-li...
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PCI Archaeology @pciarchaeology.bsky.social · 27/12/2024
Brave decision by JHE Editorial Board. Hopefully there are transparent, open and even free initiatives out there for human evolution scientific publications.
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Pierre-Yves de Müllenheim @pydemullenheim.com · 20/12/2024
#rstat note to myself: If you want to convert a factor variable that contains numbers between quotes (eg, "1", "3", etc) to a numeric variable while keeping the original numbers: DO: as.numeric(as.character(my_var)) NOT DO: as.numeric(my_var) The 2nd option returns variable level numbers!
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Philipp Herzog @herzog.bsky.social · 16/12/2024
It was about time…🕰️
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Pierre-Yves de Müllenheim @pydemullenheim.com · 11/12/2024
Sharing data along with an article is important for transparency/repro. A nice consequency is that it allows teachers to propose interesting examples to students for improving/assessing data analysis skills. So thanks to Communications in Kinesiology & @pci-hms.bsky.social for their policies!
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Dirk Eddelbuettel @eddelbuettel.com · 09/12/2024
Call for Help: As AE for JSS, I am looking for reviewers for a neat paper (and #Rstats package) with low/mid/high precision float support, something of interest for (very) large models and machine learning. If you,dear reader, could review this please get in touch via email. Thanks in advance.
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Matt Tenan PhD ATC @tenanatc.bsky.social · 05/12/2024
There are more authors on this paper than cases of CTE in the manuscript.
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PubPeer @pubpeer.com · 26/11/2024
We’re encouraging meaningful commentary with $1,000 rewards for selected PubPeer comments. bsky.app/profile/pubp... Now imagine if @hhmi.bsky.social , NIH, NSF, etc also awarded outstanding public reviews. These could boost careers and CVs while building a vital layer of scientific evaluation.
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Peer Community in Health & Movement Sciences @pci-hms.bsky.social · 25/11/2024
If you want a more affordable publishing system, you should prioritize the review of preprints with us 🙂
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Dan Quintana @dsquintana.bsky.social · 24/11/2024
Currently reading: Trends in hoaxes of academic communication doi.org/10.1101/2024...
Figure 1 from the paper. This illustrates the number of hoaxes from 2000 to 2020. There was a peak around 2017
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Peer Community in Health & Movement Sciences @pci-hms.bsky.social · 24/11/2024
Once your preprint is peer-reviewed & recommended by us, if you decide to submit to a journal that is not @peercomjournal.bsky.social, please be sure to cite the @peercommunityin.bsky.social recommendation with its DOI to acknowledge our contribution & to make readers aware of the PCI initiative.
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Matthieu Boisgontier @matthieuboisgontier.com · 18/11/2024
'MatchIt' is an excellent #Rstats package! We used it to match each person with stroke to 5 adults without stroke, ensuring similar propensity scores (i.e. similar covariate distributions) at baseline, when all participants were stroke-free. doi.org/10.1093/ptj/...
doi.org
Prestroke Physical Activity Matters for Functional Limitations: A Longitudinal Case–Control Study of 12,860 Participants
AbstractObjective. In the chronic phase after a stroke, limitations in basic activities of daily living (ADLs) and instrumental activities of daily living
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Pierre-Yves de Müllenheim @pydemullenheim.com · 17/11/2024
Very happy of this one ! Nice first experience with the PCI process!
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Bruno Rodrigues @brodriguesco.bsky.social · 16/11/2024
Let me share a couple of links I think you could find useful: raps-with-r.dev -> Learn how to build reproducible pipelines with #RStats, #renv and #Docker docs.ropensci.org/rix/ -> rix, an R package that generates #Nix expressions you can use to set up per project development environments
raps-with-r.dev
Building reproducible analytical pipelines with R
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Steve Haroz @steveharoz.com · 24/06/2024
This is why I don't recommend using G*Power. Its labels are extremely confusing to the point of being misleading.
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Layan Fessler @layanfessler.bsky.social · 21/06/2024
Happy to have presented some initial results from my latest PhD study on the association between affective responses, perceived exertion and physical activity in people with chronic disease at ICAMPAM 2024! A sneak peek here, just a few months away from pre-print👀. @labosens.bsky.social
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Daniel Lakens @lakens.bsky.social · 25/05/2024
What does it mean to say ‘preregistration is a plan, not a prison’? In my recent paper on When and How to Deviate From a Preregistration online.ucpress.edu/collabra/art... I explain the value of the plan, but also when to deviate from it. >🧵
online.ucpress.edu
When and How to Deviate From a Preregistration
As the practice of preregistration becomes more common, researchers need guidance in how to report deviations from their preregistered statistical analysis plan. A principled approach to the use of pr...
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Daniel Lakens @lakens.bsky.social · 26/05/2024
The journal JPE will now require preregistration of empirical work. The number of journals requiring preregistration and a detailed statistical analysis plan will only grow. There will be room for well-justified exceptions, but this will be the default. www.journals.uchicago.edu/journals/jpe...
journals.uchicago.edu
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Matthew Kay @mjskay.com · 07/03/2024
remember SOFTWARE CITATIONS, people I can see you
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Matthieu Boisgontier @matthieuboisgontier.com · 29/02/2024
Insight into why we move slower as we age: it isn’t because of diminished motivation, it is because of the increased effort required to move. t.co/pDI4lNgsPl
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Peer Community In @peercommunityin.bsky.social · 12/02/2024
Hello Bluesky! We're a non-gouvernemental and non business organisation (peercommunityin.org). We manage a platform hosting scientific communities evaluating and recommending scientific articles posted in open archives and preprint servers in their field, for free.
peercommunityin.org
Peer Community In - free peer review & validation of preprints of articles
PCI is a non-profit open science organization of scientists to evaluate, recommend and publish research preprints in free open access
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Center for Open Science @cos.io · 29/01/2024
We’re excited to announce that COS is collaborating on a pilot program with Meta. Using innovative methods from the open science movement to promote rigor and transparency, Meta and COS will pilot a new approach to industry-academia partnerships for accessing social media data. bit.ly/48OzLnu
bit.ly
Meta Partners with the Center for Open Science to Share Data to Study Well-being Topics
Using innovative methods from the open science movement to promote rigor and transparency of research, Meta and the Center for Open Science will pilot a new approach to industry-academia partnerships ...
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Daniel Lakens @lakens.bsky.social · 29/01/2024
New episode of @nulliusinverba.bsky.social on preregistration. I love recording with Smriti. She brings up an intriguing argument for preregistration that is different from my viewpoint, but very valid. We talked so long, part 2 will follow. nulliusinverba.podbean.com/e/preregistr...
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