Robin Carhart‑Harris, PhD

Robin Carhart‑Harris, PhD

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Neuroscientist; psychedelic science; consciousness and therapeutic mechanisms.

Weekly Psil
SocialApr 15, 2026

Weekly Psil

Big up Eric et al for driving this: Observing the mind under psychedelics: conceptual metaphors used following four once-weekly macrodoses of psilocybin https://t.co/gPYGMNkep0

By Robin Carhart‑Harris, PhD
Emotional Breakthrough Reaffirms as Top Response Predictor
SocialMar 27, 2026

Emotional Breakthrough Reaffirms as Top Response Predictor

Pleased to be included in this work. Emotional breakthrough as a strong predictor of response (again): https://t.co/pAPCipfd1U

By Robin Carhart‑Harris, PhD
Restarting SSRIs Improves Outcomes Over Med‑Free Approach
SocialMar 25, 2026

Restarting SSRIs Improves Outcomes Over Med‑Free Approach

When we published our H2H in @NEJM Ian Jordan raised an excellent letter re SSRI discontinuation & how it might impact response. We looked & found he was right. Those who discontinued SSRIs and went back on (escitalopram) did far...

By Robin Carhart‑Harris, PhD
Study’s Bias: Excluding TAD Nonresponders, Uncontrolled Therapy
SocialMar 25, 2026

Study’s Bias: Excluding TAD Nonresponders, Uncontrolled Therapy

Here it is again. Amazing how researchers could get away with this back then. Regular systematic bias of excluding TAD nonresponders. Also note another thing inconsistent with core psychedelic trial period i.e., that Ps were allowed to continue psychotherapy outside...

By Robin Carhart‑Harris, PhD
Escitalopram Yields -16.6 HAM‑D Drop After 8 Weeks
SocialMar 25, 2026

Escitalopram Yields -16.6 HAM‑D Drop After 8 Weeks

Anyone have a PDF of this? Perhaps there isn't a digital copy... This one showed an impressive -16.6 HAM-D drop with 8 weeks of escitalopram. It would be good to know their methodology. https://t.co/P5GCYcbxjk

By Robin Carhart‑Harris, PhD
Venlafaxine Shows Unexpected -15.2 HAM‑D Drop in TAD Trial
SocialMar 25, 2026

Venlafaxine Shows Unexpected -15.2 HAM‑D Drop in TAD Trial

See this for just 1 of the TAD trials from recent @psybalazs and @QuantPsychiatry comparative analysis. 1 of several deck stacks favoring TADs. This trial reported a surprising -15.2 HAM-D drop with venlafaxine. Not so surprising when you look closer......

By Robin Carhart‑Harris, PhD
Expectancy Effects Vary: Present in TAD, Not PAT
SocialMar 22, 2026

Expectancy Effects Vary: Present in TAD, Not PAT

I can’t let this point go w’out comment. @psybalazs is first author on work that showed expectancy effects between PAT and a TAD are not uniform. They were operative for the TAD but not PAT. Why isn’t that cited?! https://t.co/kb9wrkAmVb

By Robin Carhart‑Harris, PhD
Blinding Doesn't Affect Psychedelic Trial Outcomes, Study Finds
SocialMar 22, 2026

Blinding Doesn't Affect Psychedelic Trial Outcomes, Study Finds

It follows that if TADs are biased by expectancy, Open Label trials will show better outcomes than blinded. Further, if expectancy is not a strong driver of response to psychedelics, then blinding shouldn’t matter as much. This is what they...

By Robin Carhart‑Harris, PhD
Mid‑session Unblinding Doesn’t Equal Procedural Equivalence
SocialMar 19, 2026

Mid‑session Unblinding Doesn’t Equal Procedural Equivalence

But one set of trials (TAD) were open label and other set of trials (psychedelic) included impt elements of experimental control, procedures like randomization and blinding. Does functional unblinding mid-session justify treating these trials as procedurally equivalent? No.

By Robin Carhart‑Harris, PhD
Comparing Psychedelic Trials to Antidepressants Skews Results
SocialMar 18, 2026

Comparing Psychedelic Trials to Antidepressants Skews Results

Does it stack the deck in favor of the standard antidepressants to pull data from placebo-controlled trials for one condition (the psychedelic) and compare it with single condition data for the standard antidepressants? Also...

By Robin Carhart‑Harris, PhD
Magic vs Psychology Reflects Ego, Not Primary Consciousness
SocialMar 17, 2026

Magic vs Psychology Reflects Ego, Not Primary Consciousness

Magic vs psychology is a modern parse. It is of ego consciousness, not primary consciousness. https://t.co/5GQcFWxsFm

By Robin Carhart‑Harris, PhD
Emotional Breakthrough Outperforms Mystical Experiences in Psychedelic Therapy
SocialMar 10, 2026

Emotional Breakthrough Outperforms Mystical Experiences in Psychedelic Therapy

Off all the constructs/phenomena that predict therapeutic response with psychedelic therapy, the best is emotional breakthrough (EB). It's not "oceanic boundlessness", it's not "mystical-type experiences," it's EB. Expect more on this soon...

By Robin Carhart‑Harris, PhD
New Study Examines Psychedelic Use–Schizophrenia Connection
SocialMar 9, 2026

New Study Examines Psychedelic Use–Schizophrenia Connection

Exciting & important new study from my lab. Have you ever wondered how strong that alleged connection is between psychedelic use and #Schizophrenia? This project aims to point the telescope there & give it a focused look. Please share widely. @AlexaM_Molinaro...

By Robin Carhart‑Harris, PhD