Hamid Razi
@hamidrazi.bsky.social
PhD student at University of East Anglia (PI: Dr. Neil Garrett).
Using behavioural experiments, computational modelling and fMRI to study learning from misinformation.
Using behavioural experiments, computational modelling and fMRI to study learning from misinformation.
Defended my PhD thesis last week and passed 🎉🥳
It took 5 hours but flew by thanks to the engaging discussions.
Grateful to my supervisors who made the past three years fun!
Will continue as postdoc in France with Prof. Jean-Claude Dreher.
Psyched!
It took 5 hours but flew by thanks to the engaging discussions.
Grateful to my supervisors who made the past three years fun!
Will continue as postdoc in France with Prof. Jean-Claude Dreher.
Psyched!
November 24, 2025 at 4:28 PM
Defended my PhD thesis last week and passed 🎉🥳
It took 5 hours but flew by thanks to the engaging discussions.
Grateful to my supervisors who made the past three years fun!
Will continue as postdoc in France with Prof. Jean-Claude Dreher.
Psyched!
It took 5 hours but flew by thanks to the engaging discussions.
Grateful to my supervisors who made the past three years fun!
Will continue as postdoc in France with Prof. Jean-Claude Dreher.
Psyched!
Reposted by Hamid Razi
🧠Our new preprint is out on PsyArXiv!
We study how getting more feedback (seeing what you could have earned) and facing gains vs losses change the way people choose between risky and safe options.
🖇️Link: doi.org/10.31234/osf...
It's a thread🧶:
We study how getting more feedback (seeing what you could have earned) and facing gains vs losses change the way people choose between risky and safe options.
🖇️Link: doi.org/10.31234/osf...
It's a thread🧶:
November 16, 2025 at 12:09 PM
🧠Our new preprint is out on PsyArXiv!
We study how getting more feedback (seeing what you could have earned) and facing gains vs losses change the way people choose between risky and safe options.
🖇️Link: doi.org/10.31234/osf...
It's a thread🧶:
We study how getting more feedback (seeing what you could have earned) and facing gains vs losses change the way people choose between risky and safe options.
🖇️Link: doi.org/10.31234/osf...
It's a thread🧶:
Reposted by Hamid Razi
🚨New WP🚨
Dialogues with our AI DebunkBot:
✔️Reduced belief in antisemitic conspiracy theories among believers
✔️Effect durable at 1+ month
✔️Improved attitudes towards Jews among initially negative participants
🟰Debunking works for deeply rooted, identity-linked conspiracies
osf.io/preprints/ps...
Dialogues with our AI DebunkBot:
✔️Reduced belief in antisemitic conspiracy theories among believers
✔️Effect durable at 1+ month
✔️Improved attitudes towards Jews among initially negative participants
🟰Debunking works for deeply rooted, identity-linked conspiracies
osf.io/preprints/ps...
November 22, 2025 at 3:23 PM
🚨New WP🚨
Dialogues with our AI DebunkBot:
✔️Reduced belief in antisemitic conspiracy theories among believers
✔️Effect durable at 1+ month
✔️Improved attitudes towards Jews among initially negative participants
🟰Debunking works for deeply rooted, identity-linked conspiracies
osf.io/preprints/ps...
Dialogues with our AI DebunkBot:
✔️Reduced belief in antisemitic conspiracy theories among believers
✔️Effect durable at 1+ month
✔️Improved attitudes towards Jews among initially negative participants
🟰Debunking works for deeply rooted, identity-linked conspiracies
osf.io/preprints/ps...
Reposted by Hamid Razi
I once saw a (very interesting) talk about sleep in which the speaker started by saying that we don't really know how to define sleep, and then proceeded to operationalize sleep in flies as basically periods when they are still for a long time. This got me thinking...
September 21, 2025 at 12:29 PM
I once saw a (very interesting) talk about sleep in which the speaker started by saying that we don't really know how to define sleep, and then proceeded to operationalize sleep in flies as basically periods when they are still for a long time. This got me thinking...
Can't wait to read this!
🚨 New paper out in Mind & Society!
Human reinforcement learning processes and biases: computational characterization and possible applications to behavioral public policy
🔗 link.springer.com/article/10.1...
Human reinforcement learning processes and biases: computational characterization and possible applications to behavioral public policy
🔗 link.springer.com/article/10.1...
August 12, 2025 at 9:37 AM
Can't wait to read this!
Reposted by Hamid Razi
New in TiCS w @dgrand.bsky.social @gordpennycook.bsky.social
It’s been ~10yrs since misinfo research exploded but our paradigms are stuck in the post-2016 “fake news” model
Time for new approaches:
o True/False → Content that misleads
o Belief → Behavior
o Eval interventions in ambiguous settings
It’s been ~10yrs since misinfo research exploded but our paradigms are stuck in the post-2016 “fake news” model
Time for new approaches:
o True/False → Content that misleads
o Belief → Behavior
o Eval interventions in ambiguous settings
August 6, 2025 at 1:40 PM
New in TiCS w @dgrand.bsky.social @gordpennycook.bsky.social
It’s been ~10yrs since misinfo research exploded but our paradigms are stuck in the post-2016 “fake news” model
Time for new approaches:
o True/False → Content that misleads
o Belief → Behavior
o Eval interventions in ambiguous settings
It’s been ~10yrs since misinfo research exploded but our paradigms are stuck in the post-2016 “fake news” model
Time for new approaches:
o True/False → Content that misleads
o Belief → Behavior
o Eval interventions in ambiguous settings
Reposted by Hamid Razi
1/11 Excited to share our @Naturestudy led by @leonooi.bsky.social @csabaorban.bsky.social @shaoshiz.bsky.social
AI performance is known to scale with logarithm of sample size (Kaplan 2020), but in many domains, sample size can be # participants or # measurements...
doi.org/10.1038/s415...
AI performance is known to scale with logarithm of sample size (Kaplan 2020), but in many domains, sample size can be # participants or # measurements...
doi.org/10.1038/s415...
July 17, 2025 at 1:36 AM
1/11 Excited to share our @Naturestudy led by @leonooi.bsky.social @csabaorban.bsky.social @shaoshiz.bsky.social
AI performance is known to scale with logarithm of sample size (Kaplan 2020), but in many domains, sample size can be # participants or # measurements...
doi.org/10.1038/s415...
AI performance is known to scale with logarithm of sample size (Kaplan 2020), but in many domains, sample size can be # participants or # measurements...
doi.org/10.1038/s415...
Reposted by Hamid Razi
Modern theories of emotion (especially “interoceptive inference”) often cite William James as a key inspiration. But what did James actually say about emotion, and is it supported by the data? Here’s a brief look at the core arguments and classic evidence. 🧵
July 13, 2025 at 7:47 AM
Modern theories of emotion (especially “interoceptive inference”) often cite William James as a key inspiration. But what did James actually say about emotion, and is it supported by the data? Here’s a brief look at the core arguments and classic evidence. 🧵
Reposted by Hamid Razi
Is risk-taking shaped by decision-making or by learning? In new work, we show that in experience-based risk-taking, very little variance is explained by decision-making (top), but a lot is explained by learning (bottom). www.nature.com/articles/s41...
July 12, 2025 at 2:15 PM
Is risk-taking shaped by decision-making or by learning? In new work, we show that in experience-based risk-taking, very little variance is explained by decision-making (top), but a lot is explained by learning (bottom). www.nature.com/articles/s41...
Such a great opportunity! but I can't apply because Trump wouldn't give a visa to an Iranian *sighs*
🚨 We’re hiring! The Computational Cognitive Neuroscience Lab at Virginia Tech is looking for a postdoc to join our team studying the neural + computational mechanisms of structure learning and flexible cognition: ccnvt.github.io#positions
CCN Lab
ccnvt.github.io
July 10, 2025 at 8:53 PM
Such a great opportunity! but I can't apply because Trump wouldn't give a visa to an Iranian *sighs*
As much as i love computational modelling, the fact that conceptually similar parameters do not generalise across task contexts is a bit disappointing.
Excellent paper btw!
Excellent paper btw!
It'ssssss PREPRINT THURSDAY! (Sadly not a thing). Approximately an era ago, I spent a *lot* of time discussing the assumptions that underpin the field of #ComputationalPskychiatry with the brilliant @jonroiser.bsky.social and @olijrobinson.bsky.social osf.io/preprints/ps...
OSF
osf.io
July 10, 2025 at 1:37 PM
As much as i love computational modelling, the fact that conceptually similar parameters do not generalise across task contexts is a bit disappointing.
Excellent paper btw!
Excellent paper btw!
Reposted by Hamid Razi
🚨 New paper in European Journal of Neuroscience:
Meta-Analysis Reveals That Explore–Exploit Decisions Are Dissociable by Activation in the Dorsal Lateral Prefrontal Cortex, Anterior Insula, and Dorsal Anterior Cingulate Cortex.
🔗 doi.org/10.1111/ejn.... (1/2)
Meta-Analysis Reveals That Explore–Exploit Decisions Are Dissociable by Activation in the Dorsal Lateral Prefrontal Cortex, Anterior Insula, and Dorsal Anterior Cingulate Cortex.
🔗 doi.org/10.1111/ejn.... (1/2)
Meta‐Analysis Reveals That Explore–Exploit Decisions Are Dissociable by Activation in the Dorsal Lateral Prefrontal Cortex, Anterior Insula, and Dorsal Anterior Cingulate Cortex
We conducted a coordinate-based meta-analysis (N = 23 studies) where we found activation in the dorsal lateral prefrontal cortex, anterior insula, and anterior cingulate cortex during exploration ver...
doi.org
July 7, 2025 at 1:00 PM
🚨 New paper in European Journal of Neuroscience:
Meta-Analysis Reveals That Explore–Exploit Decisions Are Dissociable by Activation in the Dorsal Lateral Prefrontal Cortex, Anterior Insula, and Dorsal Anterior Cingulate Cortex.
🔗 doi.org/10.1111/ejn.... (1/2)
Meta-Analysis Reveals That Explore–Exploit Decisions Are Dissociable by Activation in the Dorsal Lateral Prefrontal Cortex, Anterior Insula, and Dorsal Anterior Cingulate Cortex.
🔗 doi.org/10.1111/ejn.... (1/2)
Reposted by Hamid Razi
🚨New preprint! WHEN should we plan toward a goal? Most research focuses on how and where to plan, but the timing of planning initiation has been overlooked. We show humans leverage a cognitive map - called model-based meta-control - to learn when to deploy a plan.
🧵(1/15)
osf.io/preprints/ps...
🧵(1/15)
osf.io/preprints/ps...
July 5, 2025 at 7:19 AM
🚨New preprint! WHEN should we plan toward a goal? Most research focuses on how and where to plan, but the timing of planning initiation has been overlooked. We show humans leverage a cognitive map - called model-based meta-control - to learn when to deploy a plan.
🧵(1/15)
osf.io/preprints/ps...
🧵(1/15)
osf.io/preprints/ps...
Reposted by Hamid Razi
I am delighted to announce registration and abstract submission is open for "The Mechanistic Basis of Foraging 2025" to be held at the Edgbaston Park Hotel, University of Birmingham, UK on 3-5th November 2025. uobevents.eventsair.com/the-mechanis...
Homepage - The Mechanistic Basis of Foraging
uobevents.eventsair.com
July 4, 2025 at 8:50 AM
I am delighted to announce registration and abstract submission is open for "The Mechanistic Basis of Foraging 2025" to be held at the Edgbaston Park Hotel, University of Birmingham, UK on 3-5th November 2025. uobevents.eventsair.com/the-mechanis...
Reposted by Hamid Razi
We are looking for a post-doc (3 yrs) to lead neuroimaging experiments (using fMRI & EEG) investigating the multimodal basis of material perception
deadline **July 28th**
#neuroskyence
#VisionScience
#PsychSciSky
#compneurosky
@timkietzmann.bsky.social, @stephanierossit.bsky.social
deadline **July 28th**
#neuroskyence
#VisionScience
#PsychSciSky
#compneurosky
@timkietzmann.bsky.social, @stephanierossit.bsky.social
Senior Research Associate in Cognitive Neuroscience at University of East Anglia
Apply for the Senior Research Associate in Cognitive Neuroscience role on jobs.ac.uk, the top job board for academic positions in higher education. View details and apply now.
www.jobs.ac.uk
July 4, 2025 at 8:43 AM
We are looking for a post-doc (3 yrs) to lead neuroimaging experiments (using fMRI & EEG) investigating the multimodal basis of material perception
deadline **July 28th**
#neuroskyence
#VisionScience
#PsychSciSky
#compneurosky
@timkietzmann.bsky.social, @stephanierossit.bsky.social
deadline **July 28th**
#neuroskyence
#VisionScience
#PsychSciSky
#compneurosky
@timkietzmann.bsky.social, @stephanierossit.bsky.social
Reposted by Hamid Razi
If there was ever a moment where useful idiots who claim that misinformation isn't a clear concept, harms few, & is not widespread, have to come to terms with how their rhetoric is being co-opted by right-wing climate denial think thanks, this is THAT moment. The tobacco playbook - as predicted.
June 27, 2025 at 3:51 PM
If there was ever a moment where useful idiots who claim that misinformation isn't a clear concept, harms few, & is not widespread, have to come to terms with how their rhetoric is being co-opted by right-wing climate denial think thanks, this is THAT moment. The tobacco playbook - as predicted.
Reposted by Hamid Razi
I'm very excited that this is out as preprint. In this study, 370 participants completed up to 30 runs of reward learning. We see that BMI and and Binge eating are associated with distinct RL patterns. Includes hierarchical models using Stan (+ many hours of sampling) and MRI data of an effort task
Our big behavioral precision mapping preprint is out. Based on 1,486,950 observed choices in a reward learning task, we show that BMI is associated with higher and more variable learning rates. Binge eating was associated with lower reward sensitivity. #neuroskyence 🩺
www.medrxiv.org/content/10.1...
www.medrxiv.org/content/10.1...
June 23, 2025 at 12:23 PM
I'm very excited that this is out as preprint. In this study, 370 participants completed up to 30 runs of reward learning. We see that BMI and and Binge eating are associated with distinct RL patterns. Includes hierarchical models using Stan (+ many hours of sampling) and MRI data of an effort task
Will be at the SBDM conference next week in Lyon.
But lost all the excitement because of Israel's attack on my home country Iran.
Now I'm all worried.
But lost all the excitement because of Israel's attack on my home country Iran.
Now I'm all worried.
June 13, 2025 at 1:15 PM
Will be at the SBDM conference next week in Lyon.
But lost all the excitement because of Israel's attack on my home country Iran.
Now I'm all worried.
But lost all the excitement because of Israel's attack on my home country Iran.
Now I'm all worried.
Reposted by Hamid Razi
If you're a grad student or an undergrad interested in research I need to you listen to me very carefully.
You cannot learn to write good research papers if you do not read good research papers.
Stop asking LLMs to summarize papers for you.
You cannot learn to write good research papers if you do not read good research papers.
Stop asking LLMs to summarize papers for you.
May 3, 2025 at 8:25 PM
If you're a grad student or an undergrad interested in research I need to you listen to me very carefully.
You cannot learn to write good research papers if you do not read good research papers.
Stop asking LLMs to summarize papers for you.
You cannot learn to write good research papers if you do not read good research papers.
Stop asking LLMs to summarize papers for you.
Reposted by Hamid Razi
𝗛𝗼𝘄 𝘀𝗵𝗼𝘂𝗹𝗱 𝘄𝗲 𝗱𝗲𝗳𝗶𝗻𝗲 𝗮𝗻𝗱 𝗱𝗲𝘁𝗲𝗿𝗺𝗶𝗻𝗲 𝗮 𝗯𝗿𝗮𝗶𝗻 𝗿𝗲𝗴𝗶𝗼𝗻'𝘀 𝗶𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝗰𝗲?
We introduce the idea of "importance" in terms of the extent to which a region's signals steer/contribute to brain dynamics as a function of brain state.
Work by @codejoydo.bsky.social
elifesciences.org/reviewed-pre...
We introduce the idea of "importance" in terms of the extent to which a region's signals steer/contribute to brain dynamics as a function of brain state.
Work by @codejoydo.bsky.social
elifesciences.org/reviewed-pre...
Brain dynamics and spatiotemporal trajectories during threat processing
elifesciences.org
April 27, 2025 at 5:17 PM
𝗛𝗼𝘄 𝘀𝗵𝗼𝘂𝗹𝗱 𝘄𝗲 𝗱𝗲𝗳𝗶𝗻𝗲 𝗮𝗻𝗱 𝗱𝗲𝘁𝗲𝗿𝗺𝗶𝗻𝗲 𝗮 𝗯𝗿𝗮𝗶𝗻 𝗿𝗲𝗴𝗶𝗼𝗻'𝘀 𝗶𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝗰𝗲?
We introduce the idea of "importance" in terms of the extent to which a region's signals steer/contribute to brain dynamics as a function of brain state.
Work by @codejoydo.bsky.social
elifesciences.org/reviewed-pre...
We introduce the idea of "importance" in terms of the extent to which a region's signals steer/contribute to brain dynamics as a function of brain state.
Work by @codejoydo.bsky.social
elifesciences.org/reviewed-pre...
An exciting opportunity!
Significant update: turns out international candidates **are eligible** in principle for this PhD position.
Deadline imminent: 30th April.
PhD position in cognitive computational neuroscience available
@psychologyuea.bsky.social
Pls retweet.
#neuroskyence
#VisionScience
#compneurosky
Deadline imminent: 30th April.
PhD position in cognitive computational neuroscience available
@psychologyuea.bsky.social
Pls retweet.
#neuroskyence
#VisionScience
#compneurosky
April 26, 2025 at 9:06 PM
An exciting opportunity!
Reposted by Hamid Razi
I'm excited to share that the VOR for my latest manuscript with Lindsay Rondot, Zeb Kurth-Nelson, @mgarvert.bsky.social , Ray Dolan, @behrenstimb.bsky.social and Erie Boorman, is out in @elife.bsky.social !
Check it out here: elifesciences.org/articles/101...
A short thread below 🧵 (1/5):
Check it out here: elifesciences.org/articles/101...
A short thread below 🧵 (1/5):
Neural mechanisms of credit assignment for delayed outcomes during contingent learning
Orbitofrontal cortex and hippocampus reinstate representations of causal choices to associate with delayed outcomes, and the frontal pole supports this credit assignment process by maintaining pending...
elifesciences.org
April 16, 2025 at 5:12 PM
I'm excited to share that the VOR for my latest manuscript with Lindsay Rondot, Zeb Kurth-Nelson, @mgarvert.bsky.social , Ray Dolan, @behrenstimb.bsky.social and Erie Boorman, is out in @elife.bsky.social !
Check it out here: elifesciences.org/articles/101...
A short thread below 🧵 (1/5):
Check it out here: elifesciences.org/articles/101...
A short thread below 🧵 (1/5):
Reposted by Hamid Razi
Our first fMRI in a while where we investigate the neural bases or multi-step Reinforcement Learning and found a clear functional dissociation between the parietal and the peri-hippocampal cortex. More info by Fabien, below
🚨 New preprint on bioRxiv!
We investigated how the brain supports forward planning & structure learning during multi-step decision-making using fMRI 🧠
With A. Salvador, S. Hamroun, @mael-lebreton.bsky.social & @stepalminteri.bsky.social
📄 Preprint: submit.biorxiv.org/submission/p...
We investigated how the brain supports forward planning & structure learning during multi-step decision-making using fMRI 🧠
With A. Salvador, S. Hamroun, @mael-lebreton.bsky.social & @stepalminteri.bsky.social
📄 Preprint: submit.biorxiv.org/submission/p...
bioRxiv Manuscript Processing System
Manuscript Processing System for bioRxiv.
submit.biorxiv.org
April 16, 2025 at 3:40 PM
Our first fMRI in a while where we investigate the neural bases or multi-step Reinforcement Learning and found a clear functional dissociation between the parietal and the peri-hippocampal cortex. More info by Fabien, below
Reposted by Hamid Razi
🚨Preprint update!🚨
with @thecharleywu.bsky.social
Are Large Language Models (LLMs) conscious? 🧠💻
Most say: only if they replicate the brain's computations.
But we propose a shift: consciousness should be inferred from their behavior.
osf.io/preprints/ps...
with @thecharleywu.bsky.social
Are Large Language Models (LLMs) conscious? 🧠💻
Most say: only if they replicate the brain's computations.
But we propose a shift: consciousness should be inferred from their behavior.
osf.io/preprints/ps...
OSF
osf.io
April 14, 2025 at 9:04 AM
🚨Preprint update!🚨
with @thecharleywu.bsky.social
Are Large Language Models (LLMs) conscious? 🧠💻
Most say: only if they replicate the brain's computations.
But we propose a shift: consciousness should be inferred from their behavior.
osf.io/preprints/ps...
with @thecharleywu.bsky.social
Are Large Language Models (LLMs) conscious? 🧠💻
Most say: only if they replicate the brain's computations.
But we propose a shift: consciousness should be inferred from their behavior.
osf.io/preprints/ps...