CPCR Associate Professor Dr. David Yaden was interviewed in an article with the Atlantic, providing insights on the safety, efficacy, and opportunities for psychedelic studies: www.theatlantic.com/health/2026/...

In a recent paper, CPCR researchers analyzed the first full year of data from the Oregon Health Authority, examining how Oregon’s policy has balanced safety and access to psychedelics outside of clinical settings. See the full paper here: www.sciencedirect.com/science/arti...

Dr. Tiwari joins the Division of Behavioral Biology and the Center for Psychedelic and Consciousness Research, where she will conduct both preclinical neuroscience and clinical studies to explore translational research on psychedelics.

Congratulations to Dr. Praachi Tiwari on her promotion to faculty at the Johns Hopkins University School of Medicine!

I wrote a book! It's called WHY WE ASK WHY, and it's about the human drive to explain, combining psychology, philosophy, and stories. It will be released on October 6, but it's currently available for pre-order from Barnes & Noble at 25% off with code PREORDER25.

Beautiful work on causal generalization and delusion maintenance from @m-meyer.bsky.social now accepted at Schiz Bull - we show people with delusions overgeneralize cause and under generalize its absence, perhaps related to aberrant prediction error: osf.io/preprints/ps...

Society for Philosophy and Psychology @socphilpsych.bsky.social at @jhu.edu this weekend. Stanton award winner @levelsof.bsky.social gave an extraordinary address on her work addressing the question: “when does thought begin?” Elegant experiments with deep implications about how the mind might work

New preprint 🚨 Transformative *Shared* Experience and Collective Decisions: Can We Rationally Choose What You or I Alone Cannot? -- with Isaac Hadfield and Daniel Villiger www.researchgate.net/publication/...

In an open access article Daniel Villiger investigates the role of expectations in transformative experiences doi.org/10.1080/0951...

Congratulations, Melissa Kibbe (@levelsof.bsky.social), on winning the Society for Philosophy and Psychology’s 2026 Stanton Prize and, more generally, for your rich research program demonstrating the origins of abstract, generative thought in human infants.

Society for Philosophy and Psychology @socphilpsych.bsky.social at @jhu.edu this weekend. Stanton award winner @levelsof.bsky.social gave an extraordinary address on her work addressing the question: “when does thought begin?” Elegant experiments with deep implications about how the mind might work

Who's excited for #SPP2026 happening at JHU? @socphilpsych.bsky.social

Packed house for the “Nature/Nurture” panel at @socphilpsych.bsky.social! #SPP2026

New work from my lab! Young children find it easier to represent mutually-exclusive possible identities of an object than possible locations of an object - an early object-rep-architecture limitation on possibility reasoning! Work led by @esranur.bsky.social recently accepted in Open Mind ✨

It’s a bird, it’s a plane, it’s…another creative & impactful project from the rocket-fueled @talboger.bsky.social, applying the wickedly cool “visual anagrams” method to animacy! Read the paper in @elife.bsky.social today, then attend his presentation at @socphilpsych.bsky.social later this week. 🦆✈️

Yessssss such a great paper, I'm so happy this is officially out!

Do we perceive animacy itself, beyond its lower-level visual correlates? In @elife.bsky.social, @chazfirestone.bsky.social and I leverage “visual anagrams” — images whose interpretations change with orientation — to suggest the answer is: yes! elifesciences.org/reviewed-pre...

Come find me at SPP (at my poster on June 18) to hear more, or even just to grab a coaster! Demo page here: www.perceptionresearch.org/anagrams_ani...

Final, fancy, official program available for @socphilpsych.bsky.social SPP 2026!! Can't wait to see everyone in Baltimore!! It's been such a blast organizing this program with the wonderful @joshrottman.bsky.social !!! www.socphilpsych.org/pastprograms...

My contribution to Time' magazines 250 ideas for America. There is no such thing as general intelligence- instead many diverse intelligences trading-off time.com/collection/o...

Atlantic article discussing current/novel psychedelics, emphasizing parameters like expectancies, context, compound, dose, etc. There is SO MUCH scientific work to do to improve on preliminary work & explore altering variables that have not yet been tested! www.theatlantic.com/health/2026/...

Balancing safety and access in Oregon’s psilocybin services. By Katherine Cheung, Caleigh Propes, David Yaden | International Journal of Drug Policy www.sciencedirect.com/science/arti...

With Deborah Mayo, Kent Staley, and Wendy Parker we are editing a special issue of Synthese on "Severity and Learning from Error": link.springer.com/collections/... Deadline for submissions is the 15th of December, 2026. If this is a topic that you are interested in, consider contributing!

Join us tomorrow, Wednesday May 27, for the Psychedelic Archives Project Guest Speaker Series! 🎤Dr. Timo Schmidt ( @Titoschmi ) 🗓 May 25, 2026 | ⏰ 4:30 PM EDT 🎟 Free to attend — sign up at the link below and in our bio!👇 jhubluejays.zoom.us/j/92622903856

JHU PhD student Katherine Cheung and PhD Candidate Caleigh Propes, with CPCR Associate Professor Dr. David Yaden, evaluated comparison sets on the price of Oregon’s psilocybin services.

🚨 New paper! Think of a place you feel deeply attached to. When you're in that place, do you feel like your life is more meaningful? New work from @ashleykrause.bsky.social suggests you probably do! Just accepted at Journal of Environmental Psychology, we find places can give our life meaning 🧵

CPCR Medical Director, Dr. Sandeep Nayak, will be speaking at the Interdisciplinary Conference on Psychedelic Research in the Netherlands on June 4-6!

Since joining Dr. Ceyda Sayalı’s lab, Guerra’s leadership and technical expertise have played an essential role in studying the effects of psilocybin using TMS/EEG. Congratulations, Rodrigo! Image: Will Kirk / Johns Hopkins University

I spend the past 2 days at a conference on the science of belief change at Stanford It struck me that Belief formation now occurs inside environments engineered for engagement rather than accurayc. For most of history, belief formation was constrained by geography, institutions & stable networks.

What is a psychological theory? Here's our take on this tricky and controversial question in this week's Experimentology chapter summary. Many things called "theories" in psychology aren't actually theories — they're frameworks. 🧵 experimentology.io

New interactive simulation in my online textbook illustrating publication bias in meta-analyses, and some techniques to model bias-adjusted effect sizes. None of these work perfectly. We need an unbiased literature to draw valid inferences. lakens.github.io/statistical_...

Here's an airplane. And here's a duck. But wait — they're the very same image, just rotated! Right now in the Banyan Breezeway, @talboger.bsky.social shows how these and other 'visual anagrams' can be used to study the perception of animacy. (This is also your chance to grab your lab merch) #VSS2026

🍄 Our new living systematic review and meta-analysis on MDMA for PTSD is now live on medRxiv. Here's what we found and how we built upon our open science infrastructure to support it 🧵 www.medrxiv.org/content/10.6...

Genuinely groundbreaking work in psychedelic anthropology here! I understand that this is the first well-documented case of indigenous psilocybin use outside of the Americas. Fieldwork led by @eselster.bsky.social under @manvir.bsky.social also w/ Sandeep Nayak and myself

For the full story -- but with better writing -- check out the Substack below! open.substack.com/pub/unpublis...

Psilocybin mushrooms are found worldwide, yet I have long argued (based on direct evidence) that traditional use is confined to Mesoamerica. I was wrong! In a new paper led by @eselster.bsky.social, we document Indigenous psilocybin mushroom use—potentially very old—in highland southern Africa.

Genuinely groundbreaking work in psychedelic anthropology here! I understand that this is the first well-documented case of indigenous psilocybin use outside of the Americas. Fieldwork led by @eselster.bsky.social under @manvir.bsky.social also w/ Sandeep Nayak and myself

People claim that psychedelics have been used by Indigenous groups around the world for millennia. But clear evidence of serotonergic psychedelic use has long been confined to the Americas. Until now. Here, we document clear evidence of Indigenous psilocybin use in Lesotho. 🍄 osf.io/preprints/so...

The Biden administration before and now the Trump administration signed support for psychedelic research. As a scientist, I think psychedelics are an essential subject of research––but I think it is important they not be conflated with other cultural/political/religious agendas:

My new paper 'Mapping profiles of animal affect' is now out in Biology and Philosophy. In it, I explore why understanding species-specific “affect profiles” matters for animal welfare research, and sketch some possible ways we might begin to map them. Available open access: doi.org/10.1007/s105...

Finished @mikejay.bsky.social's PSYCHONAUTS. Been a fan since reading his essays in Fortean Times and Anomalist (great piece on Coleridge!). Approachable, with deep insights. Text runs from Freud to Yeats, H.G. Wells, to Crowley, Blavatsky to Baudelaire. Bold, rich, nuanced.. and fun! 🔥 #BookSky

Psychological scientists are determined to figure out the best practices for online surveys, who—or what—is behind bad data, and how to best protect surveys from the new and emerging threat of #AI. @justinsulik.bsky.social

What can large-scale studies tell us about reproducibility? In our webinar on April 16, researchers from COS, I4R, and META-REP will discuss findings from three papers—one from the recently published SCORE effort—and insights on reproducibility, transparency, and credibility cos-io.zoom.us/webin...

Full Psych Science paper from @bxjaeger.bsky.social available at: journals.sagepub.com/doi/10.1177/... Here is the pattern of judgments for the individual targets:

How do people decide whether it’s wrong to harm a pig? A chimp? A baby? In the West, these judgments are based more on *experience* (being able to feel) than on *agency* (being able to think and act) New study finds that same pattern across other cultures journals.sagepub.com/doi/10.1177/...

Reminder! The Open Encyclopedia of Cognitive Science (OECS) hosts summaries of what we know vs don't about a host of fascinating issues. All freely available. What a terrific alternative to doomscrolling: learning about (e.g.) The Mind-Body problem, Delusion, or Free Will. oecs.mit.edu

TIL despite the opening sentence of “Reasons and Persons”, Derek Parfit did in fact *not* own a cat.

#Artemis II, the first crewed lunar mission in 50+ years, provides a new perspective from the far side of the #moon. Seeing Earth from space can ignite the overview effect—a profound sense of awe and understanding. Explore the psychology of space travel: https://bit.ly/4tVvKIb @existwell.bsky.social

Join us Wednesday for the Psychedelic Archives Project Guest Speaker Series! 🎤 Jeffrey Breau, MDiv. 🗓 April 15, 2026 | ⏰ 4:30 PM EDT 🎟 Free to attend — sign up at the link below and in our bio!👇 jhubluejays.zoom.us/j/92622903856

My book just came out in a Japanese translation. I’d be happy to speak to any classes or groups who happen to read it-