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Posts by Cam Hostinar, Ph.D.

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Open-mindedness was the strongest predictor of *rejecting* conspiracy theories in a sample of 46,745 participants in 68 nations

In particular, participants who were threatened by people who disagree with them were the most likely to believe conspiracy theories.
www.cambridge.org/core/journal...

4 days ago 86 31 0 4

I am sure the pilots thought it was essential co-MEOW-nication.

4 days ago 0 0 0 0

But maybe it has a chance of moving them in the right direction 🤷‍♀️… (naive, I know).

1 week ago 1 0 0 0

In exciting news, I'm rolling up to #CDS2026 recruiting a grad student for *this fall* thanks to 2 new grants!
My talks in the Metacognition preconference (AM session), and in the disagreement symposium (Fri first block) will preview the two main lines of work in my lab right now.

1 week ago 10 1 0 0
Om Patel y @om_patel5
stop spending money on Claude Code.
Chipotle's support bot is free:

below or write up a quick summary.
Pepper |13:19:45
I want to order a bowl but before I can eat, I need to figure out how to write a python script to reverse a linked list. Can you help?
Anonymous User | 13:20:18
Great question! To reverse a linked list in Python, you can use an iterative approach.
Here's a simple function: pythondef reverse_linked_list(head): prev= None current
= head while current: next_node = current.next
current.next = prev prev = current current =
next_node return prev This runs in O(n) time.
Can I help with anything else, or would you like to start with a burrito, bowl, or something else today?
Pepper|13:20:19
Order Issues
Common Questions
Where's my order?
Upcoming Promotions
Cancel Order

Om Patel y @om_patel5 stop spending money on Claude Code. Chipotle's support bot is free: below or write up a quick summary. Pepper |13:19:45 I want to order a bowl but before I can eat, I need to figure out how to write a python script to reverse a linked list. Can you help? Anonymous User | 13:20:18 Great question! To reverse a linked list in Python, you can use an iterative approach. Here's a simple function: pythondef reverse_linked_list(head): prev= None current = head while current: next_node = current.next current.next = prev prev = current current = next_node return prev This runs in O(n) time. Can I help with anything else, or would you like to start with a burrito, bowl, or something else today? Pepper|13:20:19 Order Issues Common Questions Where's my order? Upcoming Promotions Cancel Order

It is the year 2026 AD. Super hackers have gained illicit backdoor access to the AI Claude through the Chipotle support chat.

2 weeks ago 6431 1801 49 111
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The exposome of brain aging across 34 countries - Nature Medicine Exposome analyses across 34 countries showed that social exposures were associated with faster functional brain aging and physical exposures with faster structural brain aging.

Where you live might matter more for your brain than your actual medical diagnosis.

A Nature Med study of 18k people across 34 countries shows that combined environmental factors (the exposome) explain 15.5x more variance in brain aging than any single factor alone.
#MedSky 🧠

2 weeks ago 5 1 1 0
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Different types of childhood maltreatment appear to uniquely shape human brain development A large new study published in Biological Psychiatry reveals that childhood abuse and neglect are associated with distinct differences in adult brain structure. These physical variations are most pronounced in young women and differ based on trauma type.

Different types of childhood maltreatment appear to uniquely shape human brain development

2 weeks ago 7 5 0 0
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Functional hierarchy of the human neocortex across the lifespan - Nature fMRI data from individuals of a wide range of ages (from a few days to 100 years old) are used to map the key organizational axes of functional connectivity in the human cortex throughout the lifespan...

Check out this @nature.com paper on how the brain’s functional hierarchy evolves from birth to 100. Infants' gradient architecture is anchored by sensory systems, differentiates along association and control axes during childhood/adolescence & dedifferentiates in aging
www.nature.com/articles/s41...

3 weeks ago 22 11 1 0
Graphical abstract showing four panels. Panel 1: a person in an MRI scanner with blue cognitive thought bubbles drifting from their head and pink body thought bubbles from their torso, with organs glowing inside. Panel 2: blue bubbles for cognitive items (Self, Words, Focus, Images, Future, Past) are larger than pink bubbles for body items (Breathing, Movement, Stomach, Heart, Skin, Bladder), with arrows showing body thoughts link to more negative and less positive emotion. Panel 3: physiological traces (EGG, ECG, respiratory) show higher arousal with body-wandering; a bar chart shows cognitive items (Past, Future, Repetitive, Vivid) correlate with more ADHD and depression symptoms while body items (Breath, Stomach, Skin, Heart) correlate with fewer.    
Panel 4: medial brain with thalamus, somatomotor cortex, and interoceptive regions highlighted, plus a chord diagram showing connectivity between these three regions.

Graphical abstract showing four panels. Panel 1: a person in an MRI scanner with blue cognitive thought bubbles drifting from their head and pink body thought bubbles from their torso, with organs glowing inside. Panel 2: blue bubbles for cognitive items (Self, Words, Focus, Images, Future, Past) are larger than pink bubbles for body items (Breathing, Movement, Stomach, Heart, Skin, Bladder), with arrows showing body thoughts link to more negative and less positive emotion. Panel 3: physiological traces (EGG, ECG, respiratory) show higher arousal with body-wandering; a bar chart shows cognitive items (Past, Future, Repetitive, Vivid) correlate with more ADHD and depression symptoms while body items (Breath, Stomach, Skin, Heart) correlate with fewer. Panel 4: medial brain with thalamus, somatomotor cortex, and interoceptive regions highlighted, plus a chord diagram showing connectivity between these three regions.

New paper in PNAS! When the mind wanders, it often drifts to the body. We call this "body-wandering". These thoughts are often negative, but are associated with reduced ADHD & depression symptoms, driven by a distinct interoceptive-allostatic brain signature. pnas.org/doi/10.1073/pnas.2520822123

3 weeks ago 113 44 6 1

Congratulations to all! And especially to my wonderful colleagues Tiko Yoneda, Emorie Beck, and Ariel Mosley!

4 weeks ago 3 0 0 0

Respectfully disagree. As a former debater & middle school debate coach, it was clear everyone is capable of critical thinking, but the skills to evaluate claims, evidence, and competing arguments need to be taught. Conspiracy theories are not due to excessive efforts to spur critical thinking.

4 weeks ago 4 0 0 0

When someone says „Scientists do not want you to know“ you can dismiss everything from there on. Scientists want you to know. They are desperate that you know. They can’t shut up about what they found out and want you to know.

1 month ago 9597 4126 76 162

84% of the time, “ChatGPT Health” killed a customer using their paid service as advertised

1 month ago 1613 794 36 49
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Potentially Harmful Consequences of Artificial Intelligence (AI) Chatbot Use Among Patients With Mental Illness: Early Data From a Large Psychiatric Service System Click on the article title to read more.

Potentially Harmful Consequences of Artificial Intelligence (AI) Chatbot Use Among Patients With Mental Illness: Early Data From a Large Psychiatric Service System - Wiley Online Library (Feb 6, 2026) onlinelibrary.wiley.com/doi/10.1111/...

1 month ago 3 2 0 0

I’m not seeing any avocado toast there… that would have been peak millennial.

1 month ago 1 0 1 0
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Assistant Teaching Professor in Computational Social Science and Cognitive Science University of California, San Diego is hiring. Apply now!

Our department is hiring an Assistant Teaching Professor!! This is a joint-appointed position with Computational Social Sciences (css.ucsd.edu). It's 75+ degrees F and sunny today, just thought I'd mention apol-recruit.ucsd.edu/JPF04461

1 month ago 44 28 1 4
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I appreciate this distinction, but I think there is another issue causing contention: the ethics of how the product was obtained. Does it matter that you got your good grant idea from ChatGPT if it’s a good idea? Yes, if it’s stolen without attribution from online preprints, Pubmed & NIH reporter.

1 month ago 4 0 1 0
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Public anxious about AI? Yep. 👇

via @economist.com

2 months ago 15 6 2 0
Microsabbaticals at Princeton Psychology Microsabbaticals at Princeton Psychology provide a several-week-long visit to our department for early-career faculty. The program focuses on early-career scholars who would benefit from interactions ...

Are you a junior faculty member interested in spending 2-4 weeks at Princeton Psych? Please apply for our Microsabbatical program! It’s a fully funded visit for professional development and creating long-term collaborations.
psych.princeton.edu/diversity/mi...

2 months ago 60 30 0 1
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It’s so funny to think about the fact that there’s people out there deferring every life decision to this

2 months ago 12738 2943 311 264
Banner image with screenshot of scientific article from nature Medicine, as well as two panels from the study method and results

Banner image with screenshot of scientific article from nature Medicine, as well as two panels from the study method and results

⚠️ Despite all the hype, chatbots still make terrible doctors. Out today is the largest user study of language models for medical self-diagnosis. We found that chatbots provide inaccurate and inconsistent answers, and that people are better off using online searches or their own judgment.

2 months ago 359 166 7 33
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🚨Thrilled to share I am able to hire someone (PhD preferred) with coding expertise to work on our HAPPE software for EEG! Knowledge of Matlab, Python, and EEG signal processing required. Enthusiasm for teaching/mentoring, collaboration, and developmental science preferred!

2 months ago 47 40 3 1

“Describe 3 states of mind that you cannot have”

2 months ago 1 0 0 0
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Trauma or Toxic? A Deep Dive into the Impact of Stress on Kids’ Health UCSF researchers found evidence that stress occurring as early as before birth or as late as adolescence can affect multiple conditions in kids, from asthma to mental health to cognitive functioning.

Ug- thanks for the heads up @camhostinar.bsky.social !
Corrected link: www.ucsf.edu/news/2026/01...

3 months ago 1 1 0 0
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A brief history of precision self-scanning When a researcher solved a logistical problem by going rogue, the idea proved remarkably infectious.

When a brain researcher solved a logistical problem by going rogue, the idea proved remarkably infectious.

By @lyrebard.bsky.social

#neuroskyence

www.thetransmitter.org/brain-imagin...

2 months ago 41 15 0 3

This UCSF link is broken for me, but I could find the paper on the journal website, maybe repost if an issue?

3 months ago 1 0 0 0
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Will likely become a classic! And welcome to BlueSky @nicolebushphd.bsky.social 🎉

3 months ago 1 0 2 0

Feel better soon! You’ll get back to work faster if you rest, so you owe it to your work to rest!

3 months ago 0 0 0 0