David Yaden

David Yaden

@existwell.bsky.social

Science of psychedelics & other altered states of consciousness Center for Psychedelic and Consciousness Research @jhpsychedelics.bsky.social Johns Hopkins University School of Medicine Oxford Uehiro Institute Yaden Lab www.YadenLab.com

1.2K followers353 following206 posts

Psychedelics are such a common subject of discussion in medical and clinical contexts, that an understanding of the state of science is useful for any clinician. Here is a way to learn about psychedelic science and medicine:

What should clinicians know about psychedelic-assisted treatments? Learn from our experts and earn 6.5 CME/CE credits! 🔗 ⬇️ Fri, Oct. 9th | Online | 8:45am-4:30pm ET hopkinscme.cloud-cme.com/course/cours...

Psychedelics are a common subject in medical and clinical contexts these days. This CME course provides an overview of the scientific state of the evidence. It is led by clinicians and scientists at @jhpsychedelics.bsky.social and one of the most efficient ways to get a sense for the field:

Just 2 days away from our online CME/CE course on psychedelic-assisted treatments, taught by our clinicians and expert scientists! Join us on Friday, Oct 9th from 8:45am-4:30pm ET. More info and registration link below! hopkinscme.cloud-cme.com/course/cours...

David Yaden reposted

Amazing recognition for a remarkable advancement that has fueled modern neuroscience. Congrats to all!

NPR@npr.org

The Nobel Prize in medicine was awarded Monday to three scientists working on the mechanisms the brain uses to switch on, or off, the activity of individual nerve cells. n.pr/4rNyBD2

David Yaden reposted

Support open-access research in psychological science – join the PsyArXiv Moderation team! 🧑‍🏫Moderator training is provided 🕰️Commitment: ~2 hours a month 📝Checking submissions for relevance, scope, and appropriate metadata 🌐Moderation work can be done asynchronously buff.ly/6TlgL7Q

buff.lySign up to be a moderator for PsyArXivIt is amazing that you are considering becoming a moderator. Moderation is a small job when there are plenty of moderators, which is why we are always on the lookout for people to join the team. We…
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Behaviors showed a variety of dose-response profiles in male/female rats. HTR (/WDS) was roughly bell-shaped (which I did not know!), immobility went up with dose, rearing & grooming reduced, sniffing/digging declined at higher doses, and circling varied by dose and sex:

David Yaden reposted

If you had to guess whether someone’s a philosopher, what’d be more predictive? Their decisions about thought experiments? Or their scores on assessments of neurodivergent traits? In more than 1000 people, the measures of #autistic (and other traits) were more predictive:

doi.orgThinking differently: neurodivergent traits and responses to thought experiments in philosophers and the general populationPhilosophers have long speculated that individual differences in temperament influence philosophical thinking, yet empirical research has rarely explored the role of neurodivergent traits in this d...

New paper, by me & Rebecca Ehrenkranz (former postdoc at The Yaden Lab at @jhpsychedelics.bsky.social), now asst prof of biostats at @northwellhealth.bsky.social : We validated & shortened the Persisting Effects Questionnaire (PEQ), used to measure pos and neg changes after psychedelic exp-

New paper – Validating and Creating a Short-Form of the Persisting Effects Questionnaire: A Measure of Positive and Negative Outcomes from Psychedelic Experiences

From 144(!) items, to just 14 plus three stand-alone items. We validated this using factor analysis (initial factor structure did not replicate), qualitative procedures to ensure participants understand items, and getting near identical results b/w long and short form in trials

Eddie Jacobs PhD representing TheYadenLab, @jhpsychedelics.bsky.social, HOPE––and I think the consensus of many psychedelic scientists––at @fda.gov Any clinical application of psychedelics should, at least initially, use safeguards based on the clinical trial context until data can be gathered.

Representing Dr. David Yaden's (@existwell.bsky.social) lab at the CPCR & Hub at Oxford for Psychedelic Ethics (HOPE) — see Postdoc Eddie Jacobs, PhD from the FDA public hearing this week on the importance of safeguards based on standardized evidence on psychedelic treatments in clinical trials.

David Yaden reposted

Replying to @jhpsychedelics.bsky.social

In clinical trials, these risks can be much lower due to screening, medical oversight, and controlled environments, but they are not zero. At Johns Hopkins CPCR, we try to share a reminder about risks every year. Promising clinical signals deserve careful science, not hype. youtu.be/uhQj9FgGIwc

youtu.beRisks in Psychedelic Clinical Trials | Johns Hopkins Center for Psychedelic & Consciousness ResearchPsychedelics are not risk-free. In recreational settings, risks can include panic, impaired judgment, worsening of psychiatric symptoms, and persistent perceptual changes, all of which can be…

In order to adjust safeguards based on data on risks and benefits, evidence needs to be collected - and collected well, that is, in a standardized manner and comparable to other treatments and substances!

He also cited our @jamapsychiatry.com article by Jared Hinkle, Marianna Graziosi, Sandeep Nayak, me showing that psychedelics do sometimes result in serious adverse events (4% in neuropsychiatric populations)-important to remember alongside the real benefits jamanetwork.com/journals/jam...

jamanetwork.comAdverse Events in Studies of Classic PsychedelicsThis systematic review and meta-analysis assesses the frequency and severity of adverse events (AEs), including serious and nonserious AEs, among studies of classic psychedelics in 4 research database...

David Yaden reposted

Join the Psychedelic Archives Project guest speaker series with Dr. Charles Nichols this Wednesday through the zoom link, no sign up is required. jhubluejays.zoom.us/j/92622903856

Dr. Charles Nichols joins us for the Psychedelic Archives Project guest speaker series, presenting “Psychedelic Use in Preconquest Mesoamerica: Probably Not What You’ve Been Told”, on Wednesday, September 16, 2026, at 4:30pm ET. Join on this Zoom link: jhubluejays.zoom.us/j/92622903856

Interesting discussion prompted by @xphilosopher.bsky.social & @androidson.bsky.social on our study correlating philosophical views with psychological traits in philosophers: when philosophers indicate they “accept” a view (eg on PhilPapers survey), do they believe it or just defend it? Thoughts?

Experimental Philosophy@xphilosopher.bsky.social

Many of you will know the famous finding from @existwell.bsky.social and Derek Anderson: Philosophers' views on philosophical questions are not predicted by their personality traits But why not? I asked Anderson about this, and he had a very intriguing suggestion philarchive.org/rec/YADTPO-2

David Yaden reposted

Replying to @xphilosopher.bsky.social

If you are doing something morally bad, people think two things: - that you can still be happy at this specific moment (see figure on left) - that in some larger way, you are not happy (see figure on right)

Happening now!

David Yaden@existwell.bsky.social

What does psychedelic science have to learn from social sciences and humanities? We were concerned about reinventing the wheel, but now also about importing historical baggage through outdated theories and under-validated measures. Book event Wednesday in Washington, DC + Zoom

David Yaden reposted

What does psychedelic science have to learn from social sciences and humanities? We were concerned about reinventing the wheel, but now also about importing historical baggage through outdated theories and under-validated measures. Book event Wednesday in Washington, DC + Zoom

David Yaden reposted

What should psychedelic science take - and not take - from other disciplines? Join us in celebrating the book launch of The Oxford Handbook of Psychedelic, Religious, Spiritual, and Mystical Experiences on Wed, Aug 5th from 10am-2pm ET. Attend in-person in Washington DC or virtually on Zoom.

David Yaden reposted

Replying to @existwell.bsky.social

Included in the book and discussion - are the terms that constitute the title of this book even useful?