Hey friends, my new paper was just published in JAMA Psychiatry. I draw on biological species classification to sketch a new framework for psychiatric nosology. Brief summary follows below. Full text link: jamanetwork.com/journals/jam... 🧪 #PsychSciSky #MentalHealth

Nice piece from @claudia-lopez.bsky.social @thetransmitter.bsky.social on the proposed NIH data sharing policies, featuring our own @anniejwa.bsky.social

Power After the Results are Known (PARKing) floggingpvalues.blog/2026/03/13/p...

One year after, we Stand Up for Science one more time at @pasteur.fr #StandUpForScience @standupforscifr.bsky.social ✊

Current NIH leadership want you to think they are using rigorous, consistent & scientific processes to screen studies to align them with agency priorities. But the process that they have put down on paper is a sham. It’s important to know NIH is not following its own guidance. Here’s why: 🧵1/

If you want to take your mind off awful politics and look at awful science stuff instead, this is a good read: www.sciencedetective.org/scientific-d...

The problem cannot be reduced to the for-profit nature of scholarly publishers. In domains where there is real competition, like groceries, cars, or TVs, the free market delivers products that constantly get better, and cheaper. www.experimental-history.com/p/the-one-sc...

Only 2 weeks left to apply to a 3-day hackathon to build tools to improve the visibility of replications! Apply by 16 March: indico.uni-muenster.de/e/marco2

This is consistent with earlier psychometric work that suggests 5-7 is the best response scale options, but good to see that the finding holds up in contemporary research. Also, good to see that labeling scales whether anchored or not has little impact on findings. academic.oup.com/ijpor/articl...

This is the swamp in which we work. To pretend that these men are exceptional mistakes the deep misogyny & racism built into American higher ed. These same men have fashioned themselves as heterodox thinkers against the world of woke but this is who they really are. www.chronicle.com/article/unma...

The boys’ club: How Epstein’s influence shaped the exclusion of women in STEM ctmirror.org/2026/02/23/t...

Thank you to @joshuasweitz.bsky.social. The origin of the current assault on science and public health has a direct tie to COVID contrarianism. But Bhattacharya, Prasad and the rest couldn’t rise without help and patronage. 1/ joshuasweitz.substack.com/p/grievance-...

A different kind of reproducibility crisis.

Paper on statistical power necessary for interaction effects doi.org/10.1177/2515...

Take a load off your minds everyone, it was regular old misogyny the whole time

Recent work has shown how vulnerable online survey research is to LLMs. Motivated by this, we examined our online Posner cueing data from Prolific. It's concerning. We now must carefully consider when (or whether?) online behavioral data can be trusted. see our comment: www.pnas.org/doi/10.1073/...

How the processes of recuperation vitiate apparent methodological advances in medical research, from meta-analysis to Mendelian randomization

Babbage, 1830, discussing the problem that scientists selectively report findings that they want to be true. Confirmation bias is a strong human tendency. This is why we need to design science in a way that prevents conformation bias from leading us away from the truth.

This article raises the larger point that it’s not just Individual decisions or moral failings that the Epstein files reveal. It’s a culture and clique that was self-reinforcing and enabling.

New paper, on a worrying trend in meta-science: the practice of anonymising datasets on, e.g., published articles. We argue that this is at odds with norms established in research synthesis, explore arguments for anonymisation, provide counterpoints, and demonstrate implications and epistemic costs.

New blog post about the age-period-cohort identification problem! In which, for the first time ever, I ask "What's the mechanism?" and also suggest that sometimes you may actually *not* be interested in causal inference. www.the100.ci/2026/02/13/o...

Happy birthday to one of my favourite haters, Charles Darwin

A meta-analysis on reducing discrimination finds: 1) passive interventions, such as short-term education or bias reminders, are ineffective 2) targeting behavior directly to inhibit bias (eg making individuals accountable or changing social norms) is helpful psycnet.apa.org/doiLanding?d...

I have a new paper. We look at ~all stats articles in political science post-2010 & show that 94% have abstracts that claim to reject a null. Only 2% present only null results. This is hard to explain unless the research process has a filter that only lets rejections through.

New: "Effect of Artificial Intelligence on Learning: A Meta-Meta-Analysis" by Wagenmakers and colleagues revealing evidence for "severe publication bias and extreme between-study heterogeneity" in existing meta-analyses of the effects of AI on learning: osf.io/preprints/ps...

***Just Published** We tested whether purpose in life mediates the relation between #loneliness and future risk of death. Loneliness seems to set in motion the erosion of purpose in life, that has downstream consequences on length of life. Paper (open access) doi.org/10.1016/j.so...

"Based on your results, we assume this comes as a great relief to you. The bridge trolling field requires little formal education, none whatsoever to be precise. If you are reading this letter at school, you may leave at any moment and head straight for the nearest bridge." buff.ly/8VX7EQ9

Journal Article: A Framework For Assessing the Trustworthiness of Scientific Research Findings (via @pnas.org) www.pnas.org/doi/full/10.... @cos.io

New preprint! So, what's a multiverse analysis good for anyway?> With @jessicahullman.bsky.social and @statmodeling.bsky.social juliarohrer.com/wp-content/u...

Our new paper, with colleagues from the Strategic Council of the National Academies, offers an integrative framework of the several components that contribute to making research findings trustworthy including ethics, methodology, transparency, inclusion, assessment, etc www.pnas.org/doi/10.1073/...

New meta finds no correlation between testosterone and risk preference, buuuuut testosterone was mainly measured using 2D:4D (nonsense) or saliva (still bad) and we know from Frey et al. 2017 that the risk measures don't tap into a coherent preference. www.sciencedirect.com/science/arti...

Very happy that our new paper is out in Collabra: Psychology! 😀 Across three studies, we failed to replicate social class-based differences in conformity, which raises further questions about key assumptions of the social cognitive theory of social class.

Read my latest post for reflections on reproducibility, research quality and a summary of a great new study which shows how NOT to do it https://open.substack.com/pub/tomstafford/p/gambling-with-research-quality

Do conscientious people age more slowly? Check it out in our work on epigenetic aging and personality differences. 🔍🧬🕰 doi.org/10.1177/0890...

Really cool work!

No One Notices Area Man's Marginal Attempts To Change

📣Revised preprint by @cas-goos.bsky.social Measurement reliability, validity, and reporting in psychology still has a long way to go... We compared original studies w replications, and where possible recalculated reliability & unidimensionality. Some findings > osf.io/preprints/ps...

#jobs #stellenangebote #GESISjobs #jobfairy #TrustedResearchEnvironments Pursue your scientific career at GESIS! youtu.be/zMY2zqYFIMg Apply now for a job as a Associate in Trusted Research Environments (Salary group 11 TV-L, working time 39,5 h/week, unlimited contract) gesis.jobs.personio....

The Personality Interest Group Including Espresso journal club (PIG-IE) at the University of Illinois at Urbana-Champaign now has a public reading schedule: pig-ie-reading-vote.lovable.app/schedule. 1/

A very comprehensive review of the genetics of personlity led by @tedmond.bsky.social This is a great onramp for those who haven't checked into psychiatric genetics or bahviour genetics in a while. www.annualreviews.org/content/jour...

Improving scientific practice can seem daunting. In this fantastic talk (and thread below), Julia Rohrer shares practical ways to communicate methodological insights to a wider audience of researchers.

Comparing registrations to published papers is essential to research integrity - and almost no one does it routinely because it's slow, messy, and time-demanding. RegCheck was built to help make this process easier. Today, we launch RegCheck V2. 🧵 regcheck.app

@forrt.bsky.social and the Münster Center for Open Science are organizing a Love Replications Week this year. Get in touch if you would like to contribute with tutorials, case studies, or discussions surrounding #reproductions and #replications! The full program will be announced soon!

A bit of a Festivus inspired post about CLPMs and RI-CLPMs: floggingpvalues.blog/2026/01/20/t...

Dusted off the ol' blog after years of heavy disuse because I'm h*ckin' excited to tell y'all about some of the exciting things we're trying in our stats/methods/skills curriculum at Brunel! Read! Share! Tell us what you think! #psychscisky 🧪 #philsci #methodology #teaching

New post: replicating Loftus and Palmer at scale. rolfzwaan.substack.com/p/memory-mis...

I started reading up on the whole "loneliness pandemic" narrative because this seems like a literature where the age-period-cohort problem may be relevant (or maybe it isn't?). Here's data from Australia (HILDA), average agreement with the statement "I often feel very lonely" (SD of ca. 1.8).>

So thrilled to see this paper in print at PSPR—I propose a new theoretical model of self-protection motivation that reimagines how people might think, feel, and act when navigating self-threats. I enjoy this sort of theoretical work & excited to share it! journals.sagepub.com/doi/10.1177/...

This adds another meaning to "I'm Irish"