🎉 Now published in Nature Communications! 🧠 We develop a novel computational reinforcement learning & habit model of Twitter data, and show that younger people & women are more behaviourally sensitive to 'Likes'. Read the paper: bit.ly/4f1vsKS

Have you used Bayes factor to test point-null hypotheses in Hierarchical models and wondered: 1. Bridge sampling (BS) or Savage-Dickey density ratio (SDDR)? 2. If SDDR, which density estimation method? 3. How many MCMC samples? 4. What's the cost-benefit trade-off? This may be of interest to you.

Scary stories about teens sell. The data tells a different story. After decades studying adolescent mental health, here's what I found: This isn't an anxious generation. It's a resilient one. Let's start treating them that way. go.ted.com/candiceodgers

The standard random-effects model in meta-analysis assumes that the amount of heterogeneity is homoscedastic. This assumption may not be true. I derived and examined various tests for heteroscedastic heterogeneity. See osf.io/cavhy for a preprint describing these methods. #MetaAnalysis #RStats

Reposting again because this is so good. Wonder where this leaves quarto esp with V2 in prep with very promising features.

🎉 Announcing Calepin 🎉 A new tool to create computational notebooks and static websites, built on Typst. Write code and prose directly in your .typ files, then publish them as documents or as a full website. vincentarelbundock.github.io/calepin/ 1/6 🧵 #Rstats #Pydata #Typst

A book about teaching open science with a chapter called "How to… develop and use Open Educational Resources" is not open and in fact costs £85.50... for Elgar members.

Cool

Finally out in Psychological Review (psycnet.apa.org/doi/10.1037/...), our update to Signal Detection Theory. We show that contrary to the prevailing Gaussian assumption, evidence distributions in recognition memory are likely minimum extreme Gumbel!

The whole thing is an amazing resource. Great example of open education materials (or textbooks in the area generally)

Psych-DS is spellcheck for your datasets, and it has an R package now! Available in beta now, made by the excellent Brian Leonard, instructions here: psych-ds.github.io/psychds-r/

"Preprints are awful because they are not peer reviewed 😭"

This incident was my first realization of the difference between academia as it sees itself and academia as it acts in the world. (I know, i know. trust me I know. I was late and i am an idiot.)

Honoured to share our new paper in @nature.com today. Across 12 countries in eastern and southern Africa and Southeast Asia, 1 in 6 internet-using children had experienced technology-facilitated child sexual exploitation and abuse. A thread 🧵

This looks great!

Official petition for the UK to rejoin the EU, open to UK citizens and residents: petition.parliament.uk/petitions/74... Takes literally 1 minute, very quick. With changing political climate, worth making your UK voice heard if this is your view. Petition closes June 8th 2026.

The quarto-preprint @quarto.org format now includes "boxes" (boring grayscale callouts likely more appropriate for academic papers vs. default quarto callouts): github.com/mvuorre/quar...

We just launched #GuesstheReplication (GutheR). It is a challenging game where you predict replicability based on the abstract and title of an original study. Play it now and beat my high score at lukasroeseler.github.io/GuessTheRepl... or use our free slides for teaching zenodo.org/records/1985...

New work-in-progress #ggplot2 extension package for chord diagrams hopefully coming soon! #RStats #DataViz

I've read this paper a bunch of times. It's great.

I spent the past semester building interactive teaching apps with AI-assisted coding. I used my personal website to share them with my students, but that makes them hard to find for other educators. So I built Galvoro — galvoro.app

I’m at the @improvingpsych.org online conference at a session about #PsyArXiv moderation, which switched from a post-moderation system (DOI assigned before moderation) to a pre-moderation system in 2025 for reasons that should be apparent on this plot.

Lazy AI slop shouldn't prevent us from sharing complete data fully openly for maximum reuse. Participants don't care if I solve my pet problem with their data but rather that the most "value" is derived from their efforts.

🚨 Does social media use show established neurocognitive signatures of addiction? Concerns about social media addiction are widespread, yet whether platforms' design features actually engage the same neurocognitive pathways as established addictions has remained untested. doi.org/10.31234/osf...

People writing pre-registrations: make them shorter. Like 92% shorter. What's the data, what's the model, what are the decision rules.

I sympathise with review pressures but cannot believe this is anywhere near an optimal solution: the ERC panel review is the weakest part of the process, based on short summaries & non-topic experts-- punishments will be given unfairly, not even based on the actual B2 applications

Our new review with Berna Güler (@bernaguler.bsky.social) is out! We ask a basic but under-specified question: What shapes the segmented nature of episodic memories?

Hell yeah. Sadly people are afraid of trying new things. Especially in academia.

PDF-Direct Firefox extension ('Bypass "fancy online reader" and just get the darn pdf') updated: addons.mozilla.org/en-US/firefo... & now supports ACM ACS Cambridge University Press Elsevier IEEE JSTOR Nature OUP PLOS PNAS Royal Society Publishing Sage Science Springer Nature Taylor & Francis Wiley

"Preprinting Does Not Meet Science’s Duty of Care Responsibility to Society" raises questions such as "why do they talk of science as a monolithic thing but only discuss a narrow corner of it?" and "what the hell?" journal.trialanderror.org/pub/preprint...

The governing body for 14 Dutch universities (UNL) has published a "Vision on Publication Culture" that is so inspiring and forward thinking. Worth a read for those trying to changes publishing and research assessment practices. Take a read: www.universiteitenvannederland.nl/files/public...

And another Quarto announcement; I've alluded to it before, but we're making it "official". We've started work on Quarto 2. The blog post has an overview: quarto.org/docs/blog/po... We'll share more in future blog posts, but here's what you can expect from the Quarto 2 dev effort: (1/)

Huge new paper (with great data for further analyses) on replicability in psych just dropped.

To lead in open science efforts, we must engage in open science practices. These papers reporting on the reproducibility et al of science projects aren't even accessible. At least one of the commentaries was also closed access. This is a huge lost opportunity and sets a bad example to all.

Meta-Psychology owns April 1st with the "Inaugural Editorial of Questionable Research Ideas and OtherPeculiarities: The QRAP section": open.lnu.se/index.php/me...

The Relation Between Attributions of Mental Capacities and Moral Standing Across Six Diverse Cultures: journals.sagepub.com/doi/full/10....

I made it to the fifth most impactful researcher! I kept hitting APCs but thought did well on publications!

Openalex is great but this number is probably hugely inflated. Eg all versions of zenodo repositories and OSF preprints appear as separate entities in OA search results.

New preprint! ✨ Do you and your partner have made-up words ("eggy" to mean awkward)? Do you and your bestie have an anecdote you love to tell together (that time one of you tripped over an acorn)? Do you and your closest colleague have a cherished ritual (weekly lunch at "the usual spot")? 🧵

Another great Rust tool for R. Air and Jarl make code review a lot easier.

lol crikey lol again

My moderation shift. This was not sophisticated forgery but even with low effort it's child's play with LLMs to make something that looks like a real paper to a quick skim. And we don't go around accusing people without being sure. So I wasted a chunk of time on the first before I noticed the others

there's an interview in Da Ali G show where he asks a lawyer how he can sue Sony for stealing his idea for the Playstation 2 "when the playstation came out I told me mate dave, they should make one of these, but, you know, better."

OpenAlex (openalex.org) is totally badass. I am not convinced the coverage is the best but compared to competition (WoS and other BS) the functionality is miles ahead. And I get to share the data on the other end.

Updates to #PsyArXiv moderation policies blog.psyarxiv.com/2026/03/23/u...