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Nate Heller @nate-h-heller.bsky.social · 2d

🧠 New Psychedelic Article in Schizophrenia Bulletin!

We argue that visual hallucinations in psychedelics and Lewy body disease may share common mechanisms ⇒ visual degradation & cortical excitation.

academic.oup.com/schizophreni...

Excited to see this spark discussion!
#Neuroscience #Psychedelics

Visual Hallucinations in Serotonergic Psychedelics and Lewy Body Diseases

AbstractBackground and Hypothesis. Visual hallucinations (VH) are a core symptom of both Lewy body diseases (LBDs; eg, Parkinson’s disease and dementia wit

academic.oup.com

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Eric Schwitzgebel @eschwitz.bsky.social · Aug 4

Terrific framing of my work on "weirdness" by Ellie and David, before after and during their interview of me on Overthink. Probably the best engagement with that dimension of my work that I've seen so far.

podcasts.apple.com/us/podcast/w...

Weirdness with Eric Schwitzgebel

Podcast Episode · Overthink · 07/15/2025 · 57m

podcasts.apple.com

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existwell @existwell.bsky.social · 9d

New in Philosophical Psychology: Derek Anderson & I review Feltz & Cokely’s Diversity and Disagreement (OUP, 2024). We applaud their empirical rigor linking personality & philosophical views, but question their (to our minds) overly hasty and sweeping philosophical conclusions.🧵

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Keith Frankish @keithfrankish.com · 6d

We need heroes. People to respect and emulate. People who inspire us to do our best and be our best. Jane Goodall was a hero, and she will remain one.

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Phil Corlett @philcorlett.bsky.social · 8d

I think we can show that people with delusions vs people with lots of esoteric beliefs both have aberrant prediction errors, but for very different neurobiological reasons: one bottom up (patients) and one top-down (psychics)

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existwell @existwell.bsky.social · 8d

exciting! can we request a mysterious indecipherable preview?

agreed about the profound psychological impact of getting new data to analyze...

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existwell @existwell.bsky.social · 9d

I think Feltz & Cokely could say something like: if responses to the question in your study are systematically swayed by personality, then that introduces an obstacle to agreement, since these operative reasons couldn't be articulated.

(this ^ is a more minimal take on their much broader argument)

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Experimental Philosophy @xphilosopher.bsky.social · 9d

I don’t understand why one would think we are getting evidence against the reliability of intuitions when we find correlations between intuitions and personality traits

Suppose we run a study and find that 60% or people give one response, 40% give the opposite response…

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existwell @existwell.bsky.social · 9d

New in Philosophical Psychology: Derek Anderson & I review Feltz & Cokely’s Diversity and Disagreement (OUP, 2024). We applaud their empirical rigor linking personality & philosophical views, but question their (to our minds) overly hasty and sweeping philosophical conclusions.🧵

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existwell @existwell.bsky.social · 9d

thank you for letting me know! I tagged them in a post on the thread as well-

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existwell @existwell.bsky.social · 9d

Book by Feltz & Cokely @ethicalinteraction.bsky.social

The book is OpenAccess, so can be accessed for free here!
link.springer.com/book/10.1007...

Diversity and Disagreement

This book details the discovery and exploration of one of the major scientific revelations that has emerged from the field of experimental philosophy

link.springer.com

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existwell @existwell.bsky.social · 9d

(Also, there may be a meeting on this book and the overall topic at Hopkins in the future. Please let me know if interested!)

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existwell @existwell.bsky.social · 9d

full review available here: researchgate.net/publication/...

We recommend reading the book!

(PDF) Diversity and disagreement: Agreeing to disagree about disagreement: Diversity and disagreement: from fundamental biases to ethical interactions, by Feltz & Cokely, Oxford, Oxford University Pre...

PDF | Psychologists Feltz & Cokley cover an important, yet to our minds surprisingly under-studied and under discussed question: why do different kinds... | Find, read and cite all the research you ne...

researchgate.net

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existwell @existwell.bsky.social · 9d

We conclude by reiterating our appreciation for the topic Feltz & Cokely have raised. We find it frankly bizarre that it isn't more discussed! They have done great empirical work and nice review of parts of the xphi lit. We view the implications discussion as an important one-

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existwell @existwell.bsky.social · 9d

We find some problems with this stance, eg: 1) the difficulty of determining whether a given trait-view relation is epistemically virtuous or vicious remains, 2) the level of skepticism may be self-undermining, and 3) what about the small magnitude of effect?

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existwell @existwell.bsky.social · 9d

Feltz & Cokely take a strong stance here. They argue that the empirical findings show that one’s endorsement of some philosophical claims is at least partially a function of one’s personality, which they argue undermines many projects in philosophy (by showing intuition faulty)

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existwell @existwell.bsky.social · 9d

but WHAT, if anything, should such findings about psychological traits and philosophical views or answers to thought experiments mean, philosophically?

Here we diverge with Feltz & Cokely

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existwell @existwell.bsky.social · 9d

Notably, in our survey of professional philosophers, most (~68%) of the sample thought that these kinds of associations between psychological factors and beliefs would have philosophical implications

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existwell @existwell.bsky.social · 9d

We (Derek Anderson and I) also found that some additional psychological traits beyond personality predict some philosophical views in professors of philosophy:
www.researchgate.net/publication/...

(PDF) The psychology of philosophy: Associating philosophical views with psychological traits in professional philosophers

PDF | Do psychological traits predict philosophical views? We administered the PhilPapers Survey, created by David Bourget and David Chalmers, which... | Find, read and cite all the research you need ...

www.researchgate.net

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existwell @existwell.bsky.social · 9d

In several topics with measurable thought experiments: free will, (side-effect effect (Knobe effect), and ethics - the authors show convincingly that personality traits (especially extraversion) reliably--though to a small degree--predicts responses on these thought experiments.

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existwell @existwell.bsky.social · 9d

Feltz & Cokely conducted many of these studies themselves, but cite many others. They review work by Josh Knobe @xphilosopher.bsky.social,
Fiery Cushman (@fierycushman.bsky.social), and others in #xphi. The book is a great review of a lot of good work in experimental philosophy (#xphi).

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existwell @existwell.bsky.social · 9d

Feltz & Cokley cover a fascinating question: why do different kinds of people tend to hold different kinds of philosophical views? While these associations tend to be of a small magnitude they have been shown in replicated studies to exist.

What should we make of the findings?

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existwell @existwell.bsky.social · 9d

The entire book--Diversity and Disagreement: From Fundamental Biases to Ethical Interactions by Adam Feltz and Edward Cokely--is open access, so free to read!
It can be found here:
library.oapen.org/handle/20.50...

Diversity and Disagreement

library.oapen.org

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existwell @existwell.bsky.social · 9d

New in Philosophical Psychology: Derek Anderson & I review Feltz & Cokely’s Diversity and Disagreement (OUP, 2024). We applaud their empirical rigor linking personality & philosophical views, but question their (to our minds) overly hasty and sweeping philosophical conclusions.🧵

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Experimental Philosophy @xphilosopher.bsky.social · 11d

Mikayla Kelley has an important new paper on why human beings even have a concept of intentional action

The key question: What does this concept do in our lives?

Her answer: Since we can't possibly evaluate all actions, it helps us choose which ones to evaluate

philpapers.org/rec/KELTNF-3

Mikayla Kelley, The Normative Function of Intentional Action - PhilPapers

This essay identifies a normative function of the concept of intentional action. Specifically, I argue that the concept of intentional action functions to focus our evaluative concern on some doings r...

philpapers.org

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Johns Hopkins Psychedelic Research Center @jhpsychedelics.bsky.social · 13d

10/ Led by former @hopkinsmedicine.bsky.social Megan Hosein and Zach Cordner, cochairs @fredbarrettphd.bsky.social and Trisha Suppes, CPCR’s Dr. Matthew Reid, @existwell.bsky.social, and Sarah Walser, Stu Charney, UT Austin’s D. Greg Fonzo, and Utah’s Dr. Ben Lewis

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