Looking forward to see many of you at #APS26BCN this week! I'm extra excited to hear about the amazing research of Kendra Wyant (Wisconsin), Paula Philippi (Wuppertal), and @eikofried.bsky.social (Leiden) in our symposium on Saturday at 10:30 in Room 123; their talks are going to be ✨spectacular✨

The wonderful Claudi Bockting @clbockting.bsky.social on “Mental Health As a Wicked Problem In Societal Challenging Times”, in room 113 at #APS26BCN

1/5 🧵🧵🧵 My #APS26BCN program this year. FRI 9am: I'll be presenting a new idea on psychiatric classification I'd like to work on in the next half decade. Please come and give feedback! Feat. @clbockting.bsky.social & @chops310.bsky.social!

1/5 🧵🧵🧵 My #APS26BCN program this year. FRI 9am: I'll be presenting a new idea on psychiatric classification I'd like to work on in the next half decade. Please come and give feedback! Feat. @clbockting.bsky.social & @chops310.bsky.social!

Using (multilevel) VAR models? Ever checked how well they actually fit your data? @jmbh.bsky.social & I created VARcheck, an R package for visual model checking for VAR models. Blogpost with workflow: bsiepe.github.io/blog/2026-05... 📝Paper: doi.org/10.31234/osf... 💻Docs: bsiepe.github.io/VARcheck/

Given the increasing delays associated with posting to preprint servers such as PsyArXiv and MetaArxiv (due to the lengthening moderation queues they have to deal with, largely due to AI slop), I regret I need a place to post preprints that is faster (1 day or less). Does Zenodo work for that?

Japan: let’s reduce the sales tax from 8% to 0%. Cash registers: we literally can’t compute a value of x if we don’t add 8%. It can’t be done.

Fred ­Kerley won the men’s 100m at the Enhanced Games, as one of the few athletes completing cleanly. His statement after winning: “Man, they need to do better than that. They need to work a little bit harder, get on that shit a little bit more.” 🙃 www.theguardian.com/sport/2026/m...

Wonderful work, talk, and database by Björn. Highly recommended.

any academics paying for kagi.com? I tried it for like 20 min and it's obvious that its standard search is far better than Google's, while also being better than free alternatives (qwant, duckduckgo etc) & ad-less I wonder if its 'academic lens' produces better results to Google Scholar?

Awww @psychscience.bsky.social that's very kind <3

Has anyone looked at this paper more closely? I've seen many of my bachelor students refer to it when it comes to depressive disorders. Authors find worldwide depression rates doubled from 1990 to 2020, which seems like a lot. pubmed.ncbi.nlm.nih.gov/40313474/

100% worth your 63 seconds if you have my reading speed. sinceyouarrived.world/taken

In the interview, the authors say this, which made me quickly close the tab and help make the decision not to look into this book further.

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...

Biologists are having a lot of fun over here so worth checking out 🫣

My uni has now started blocking its own emails as spam 🫣 ... (in this case, an email telling me to log into the system where we grade student theses)

Two new facts stand out: 1. 85% of hallucinated citations in preprints are also in the subsequent journal version (thanks, peer review!) 2. Fake cites more likely to use the names of (male) scholars who are already highly cited, creating a fake-citation Matthew effect. arxiv.org/abs/2605.07723

Collabra: Psychology, the official journal of the Society for the Improvement of Psychological Science, seeks applications for Editor-in-Chief! The SIPS Publications Committee encourages editors with innovative ideas about how Collabra: Psychology can best accomplish its mission to apply.

Smartphones can do a lot, but apparently they cannot keep you from analysing your data in an incredibly wacky manner to feed a certain narrative about smartphones.

Just watched one of the craziest science videos I've seen. TL;DR: many molecules in the universe have different structures—polymorphs. Some of these are more stable. In the case of the HIV/AIDS drug Ritonavir, the spread of the more stable polymorph means we can no longer produce the drug today. 🧵

APS had scheduled overlapping symposia 1 and 2 in which I present, but quickly fixed in after I reached out in April to move symposium 1 to another day. A few days ago, they now also moved symposium 2 to the same time on the same day, so I'm now double booked again.

Minutes that matter: A microburst approach to adolescents’ resolution of affect in response to daily stressors osf.io/preprints/ps...

For some reason, the new report of the National Survey on Drug Use and Health is geo-locked, and cannot be accessed from the Netherlands (or, I assume, from anywhere outside the US). As US based VPN solves the issue. Any thoughts why this would be the case? nsduhweb.rti.org/respweb/home...

New paper in Nature Mental Health: www.nature.com/articles/s44... After decades of seeing limited progress in depression research despite enormous scientific effort, we started asking a more fundamental question:

Hey @freieuniversitaet.bsky.social, why is it mandatory for me to consent to you storing my personal data when I am trying to *unsubscribe* from a newsletter?

I got to collaborate with *MIRI'S DAD*!! Can you image?

Turns out empirically derived phenotypes (data-driven symptom sets) nested within traditional mental disorders can help reduce diagnostic heterogeneity! We learned so much cool and interesting stuff in this study. I could talk (/post) about it all day, but here’s a few highlights (🧵)

Cool work by Josip, Jasmina, @bringmannlaura.bsky.social & @domimaciejewski.bsky.social in which uni students were unable to identify their own estimated EMA networks above chance level. Looking forward to seeing whether this replicates in people w mental health problems! osf.io/preprints/ps...

Found this account @celestialsem.bsky.social and it's my new favorite thing on bluesky.

Beautiful piece by Awais. Money quote below. My one concern is that many psychiatrists do not in fact mean what Awais means when they say "you have ADHD". They mean it in exactly the same way one says "you have liver cancer". And it's very harmful for mental health science and practice.

New paper showing insufficient evidence for neuroimaging features to define reproducible, biologically valid, & clinically meaningful schizophrenia subtypes. The subtypes identified to date likely reflect continuous variation within the disorder rather than discrete, biologically distinct entities.

We’ll see many more of these, in most cases based on security weaknesses in code discovered by AI. I saw some recent zero-day vulnerabilities discovered in the Linux kernel, for instance. www.theguardian.com/world/2026/m...

Hi @cos.io friends: trying to clean up my ~100 OSF talks, linked as components in a project. After redesign, they're exceedingly difficult to see/ edit. Takes me minutes clicking "see more" just to see lowest talk, let alone drag. I'm sure I'm doing something wrong, pls help :) !

Wimsatt: Perhaps, just perhaps, the best explanation of a phenomenon at a given level is to be found at the same level. Kendler: Noone would seek to explain hypertension at the level of quarks. A few of my favourite papers on this topic of absurd biological reductionism: 🧵

Hey psychologists, when you're explaining some psychological phenomenon that's perfectly well captured in psychological terms, maybe you don't need to refer to some shitty neuroimaging study with ten people to make it seem more "sciencey"...

Panic over x

I think I see some pattern in the data ...

Beautiful.

Following up on our discussions in the last days on implausible effect sizes: psilocybin RCT with n=40 and an odds ration of 18. jamanetwork.com/journals/jam...

Ch et al. 2023 was finally retracted. I reported this paper in Feb 2025. The journal allowed the authors to correct but the 'corrected' figures were once again littered with mistakes. 10 months later it was finally retracted.... (pubpeer.com/publications...)

Wish it were so simple pure.amsterdamumc.nl/en/publicati...

🚨 New article klaxon 🚨 Gaby Mahrholz, @emilynordmann.bsky.social and I have our article "Practice What You Preach: Designing Student Assignments That Advance Open and Reproducible Science" published in AMPPS. doi.org/10.1177/2515...

Nazi party in a part of Eastern Germany is close to 50%. Latest polls project 41%, but GER drops parties <5%. So if BSW, GRÜNE & SONSTIGE all had 4%, AFD with would be ~47%.

[2016] A French literature Prof was celebrated by the French national assembly, Nobel prize winners, former government ministers, MPs, decorated scientists and academics for winning award ... [2026] ... that he now appears to have made up. www.theguardian.com/world/2026/m...

Speaking of crazy d values, this reminds me of this feature I was thinking about adding to the forest() function in metafor. #Rstats #MetaAnalysis

Just found this incisive 2019 US Supreme Court decision on partisan latent variable modeling.

Great discussion, and I understand some of the concerns. I’ll say that if people who wrote our R packages thought like that though — open software, but only for some or under some conditions — we’d be in serious trouble as a field.

Killer paper intro, from this 2021 paper on arxiv: arxiv.org/pdf/2106.11285