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pydemullenheim.com
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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Prolific Poster

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"?

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_...

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.

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...

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...

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

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

@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...

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

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...

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...

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...

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🤩!

Forgot to say, we'll be submitting this to @psych.peercommunityin.org once it launches, but we'd love any feedback form people before then if they have any 😊

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...

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!

A list of 1,360 predatory publishers 😮 predatoryjournals.org/publisher-li...

Brave decision by JHE Editorial Board. Hopefully there are transparent, open and even free initiatives out there for human evolution scientific publications.

#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!

It was about time…🕰️

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!

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.

There are more authors on this paper than cases of CTE in the manuscript.

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.

If you want a more affordable publishing system, you should prioritize the review of preprints with us 🙂

Currently reading: Trends in hoaxes of academic communication doi.org/10.1101/2024...

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.

Really great to see this recommended in @pci-hms.bsky.social after all Hannah's hard work. Also a great review process with @mbieleke.bsky.social and the other reviewer really helping improve and tighten up the manuscript, thanks! 🙏

'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/...

Very happy of this one ! Nice first experience with the PCI process!

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

This is why I don't recommend using G*Power. Its labels are extremely confusing to the point of being misleading.

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

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. >🧵

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...

remember SOFTWARE CITATIONS, people I can see you

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

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.

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

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...

1/8 New tutorial preprint led by @bsiepe.bsky.social in which we present different descriptive statistics & data visualization techniques with the goal to better understand EMA item functioning. Preprint: osf.io/preprints/ps... Brief overview thread 🧵

🎨 Welcome the latest addition to my color link collection: oklch-smooth, a smooth full spectrum sRGB palette for data visualisation. Developed by by Stephen Hutchingson. 👉 www.s-ings.com/scratchpad/o... What do others think, are they well-designed? cc @lisacmuth.bsky.social @fabiocrameri.ch

v impressive sleuthing to identify fale peer review ring at MDPI predatoryreports.org/news/f/revie... Will be interesting to see if publisher takes prompt action to retract affected papers. i always thought their pressure for v rapid review would encourage papermills

A scientific paper is a necessary but not sufficient summary of the scientific research. Fully reporting your work means making data (or anonymized summaries) and the analysis code that produces all results in the paper transparently available.