Paul Sharp
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paulbsharp.bsky.social
Paul Sharp
@paulbsharp.bsky.social
Assistant professor of psychology, Bar-Ilan University | computational cognitive science & psychiatry

"Discovery happens less when you're trying to be the expert and more when you're trying to be the learner." - Itai Yanai

Website: sharplabbiu.github.io
Pinned
1st Sharp Lab preprint! 🚨 We tested how anxiety affects task generalization—not how people generalize threat stimuli, but how they reuse action-outcome structures when planning in new contexts.

Worry makes people avoid reusing actions that co-occurred w/ threat!
📄: osf.io/preprints/ps...

🧵 1/12
Got useful feedback! Check out our revised preprint on how humans learn to delay planning. We simulate our model w/ realistic costs to planning, retrieval, & maintenance to show why caching meta-control policies & replanning where control is necessary is resource-rational.

osf.io/preprints/ps...
November 25, 2025 at 1:46 PM
Computational modelling power issues

What happens when we assume all individuals' behavior is generated from the same model?

False positives and influence of outliers!

#computationalpsychiatry
November 22, 2025 at 5:30 PM
Reposted by Paul Sharp
📣🔥Thrilled to announce that 2026 Computational Psychiatry Conference will take place in New Haven, CT, btw July 14-16 -
www.cpconf.org

@robbrutledge.bsky.social @drrickadams.bsky.social @tobiasuhauser.bsky.social @docqhuys.bsky.social @clairegillan.bsky.social Sonia Bishop

More info to come soon!
November 21, 2025 at 7:27 PM
Reposted by Paul Sharp
Reposted by Paul Sharp
Excited to share a new preprint, accepted as a spotlight at #NeurIPS2025!

Humans are imperfect decision-makers, and autonomous systems should understand how we deviate from idealized rationality

Our paper aims to address this! 👀🧠✨
arxiv.org/abs/2510.25951

a 🧵⤵️
Estimating cognitive biases with attention-aware inverse planning
People's goal-directed behaviors are influenced by their cognitive biases, and autonomous systems that interact with people should be aware of this. For example, people's attention to objects in their...
arxiv.org
November 13, 2025 at 1:20 PM
Reposted by Paul Sharp
Anxiety biases task generalization: https://osf.io/c2jz5
October 21, 2025 at 4:20 PM
Inspiring!
Wow. The first woman to receive tenure in Physics at Harvard dropped out of high school to form an alternative school with friends and later codiscovered the top quark and Higgs boson. (And psst: she supports PhD students & loves books).💙

www.physics.harvard.edu/people/facpa...
Melissa Franklin | Department of Physics
www.physics.harvard.edu
October 30, 2025 at 4:51 AM
Looking forward to reading! @evanrussek.bsky.social and I found goal perseveration in a multigoal setting , and that it was exaggerated. I think goal stubbornness, and/ or goal myopia, is key to understanding mood and anxiety psychopathology
Super happy to see this review out! We ask why people are so reluctant to abandon goals and how this commitment could be understood computationally. Work with Jill O'Reilly & @yaelniv.bsky.social
Online Now: The adaptive value of stubborn goals
October 29, 2025 at 5:02 PM
Amazing opportunity!!
🚀 We’re hiring - Join our lab 🚀

🔍 Hiring: PhD (75% TV-L) & Postdoc (100% TV-L)
🧠 fMRI, VR, EEG, modelling

We combine a range of cognitive neuroscience methods to study flexible behaviour.

📅 Start: Feb 2026 or later | ⏳ Apply by Nov 3!

More details:
tinyurl.com/ms3a9ajt

#CognitiveNeuroscience
October 27, 2025 at 1:58 PM
Reposted by Paul Sharp
🚨 New preprint 🚨

How do people's mental models shape memory, prediction, and generalization? We find that people spontaneously construct goal-dependent causal abstractions that compress experience to privilege relevant information.

📃 osf.io/preprints/ps...
🔗 github.com/cicl-stanfor...
October 24, 2025 at 7:15 PM
Reposted by Paul Sharp
🚨 New publication: How to improve conceptual clarity in psychological science?

Thrilled to see this article with @ruimata.bsky.social out. We discuss how LLMs can be leveraged to map, clarify, and generate psychological measures and constructs.

Open access article: doi.org/10.1177/0963...
October 23, 2025 at 7:27 AM
Reposted by Paul Sharp
📢 Thrilled to share our paper is out now in @natcomms.nature.com

Shared computations underlie how we acquire actions that are mutually beneficial, instrumentally harmful (benefits self at the expense of others), altruistic (benefit others at the expense of self), or mutually costly

🧵 rdcu.be/eL8mZ
Neurocomputational basis of learning when choices simultaneously affect both oneself and others
Nature Communications - When learning to make choices that simultaneously affect the self and others, asymmetric encoding of information guides future social behaviors across mutually beneficial,...
rdcu.be
October 22, 2025 at 4:42 PM
Reposting our labs first task preprint on task generalization and anxiety - now available on OSF.
1st Sharp Lab preprint! 🚨 We tested how anxiety affects task generalization—not how people generalize threat stimuli, but how they reuse action-outcome structures when planning in new contexts.

Worry makes people avoid reusing actions that co-occurred w/ threat!
📄: osf.io/preprints/ps...

🧵 1/12
October 21, 2025 at 7:27 PM
What do folks thing are the best demonstrations of a (neuro)biological result constraining our theorizing at an algorithmic/psychological level? (If any)!
October 21, 2025 at 9:19 AM
Amazing opportunity!
Fully-funded 4-year #PhD in Cultural Evolution! Join my @erc.europa.eu project exploring how compression & compositionality drive cultural innovation: hmc-lab.com/ERCPhDCultur...
Apply by Nov 12!
Maybe of interest to folks from #COSMOS2025 or @eslr.bsky.social? Please feel free to share! 🙏
ERC funded PhD position on Cultural Evolution
ERC funded PhD position on Cultural Evolution posted on October 16, 2025 We are currently seeking a highly motivated individual for a ful...
hmc-lab.com
October 20, 2025 at 3:29 PM
Reposted by Paul Sharp
Interested in building computational models of anxiety? See below for a potential PhD opportunity with me

Feel free to reach out if you'd like to know more!

@kingsioppn.bsky.social @kingscollegelondon.bsky.social

kcl-mrcdtp.com/project/unde...
Understanding Negative Cognition in Anxiety Using Artificial Neural Networks - MRC DTP
Generalised anxiety disorder (GAD) is one of the most common mental health problems, but the mechanisms underpinning its symptoms remain poorly understood, limiting the development of novel interventi...
kcl-mrcdtp.com
September 25, 2025 at 2:41 PM
Congrats to all! Wow, what a journey 🥂
Congrats to everyone who submitted their first ERC today!

Can we all now collectively collapse?
October 14, 2025 at 12:51 PM
1st Sharp Lab preprint! 🚨 We tested how anxiety affects task generalization—not how people generalize threat stimuli, but how they reuse action-outcome structures when planning in new contexts.

Worry makes people avoid reusing actions that co-occurred w/ threat!
📄: osf.io/preprints/ps...

🧵 1/12
October 13, 2025 at 6:30 AM
Reposted by Paul Sharp
I'm recruiting grad students!! 🎓

The CoDec Lab @ NYU (codec-lab.github.io) is looking for PhD students (Fall 2026) interested in computational approaches to social cognition & problem solving 🧠

Applications through Psych (tinyurl.com/nyucp) are due Dec 1. Reach out with Qs & please repost! 🙏
codec lab
codec-lab.github.io
October 6, 2025 at 2:26 PM
Reposted by Paul Sharp
Happy to share our new work showing how social emotions such as anger and gratitude establish an interindividual form of actor-critic learning, which leads to the emergence of norms in groups of interacting individuals.

Now published at @apajournals.bsky.social: psycnet.apa.org/record/2026-...
October 3, 2025 at 8:17 AM
Reposted by Paul Sharp
🚨New preprint🚨

osf.io/preprints/ps...

In a sample of ~2 billion comments, social media discourse becomes more negative over time

Archival and experimental findings suggest this is a byproduct of people trying to differentiate themselves

Led by @hongkai1.bsky.social in his 1st year (!) of his PhD
September 26, 2025 at 8:30 PM
Looks super cool, looking forward to reading.
Super proud of this collaboration with rockstar Ryan Raut - born out of playing in the sandbox in our last year of grad school! Multi-scale brain activity can be predicted from a simple measure of arousal like pupil diameter. Out with linear causality, in with dynamic systems to explain neurobiology
Arousal as a universal embedding for spatiotemporal brain dynamics - Nature
Reframing of arousal as a latent dynamical system can reconstruct multidimensional measurements of large-scale spatiotemporal brain dynamics on the timescale of seconds in mice.
www.nature.com
September 26, 2025 at 7:19 AM
Reposted by Paul Sharp
🚨 I am over the moon 🌓 to announce that I am joining University College Dublin @ucddublin.bsky.social as an Assistant Professor this fall to start the Uncertain Mind (UMI) lab 💫

I am looking for PhD/Postdoc candidates to join (more below 👇 ). Please RT as the deadline is pretty soon 🙏
September 24, 2025 at 3:18 PM
This problem pervades many areas

Kozak and Miller 1982 have a great paper on this: "Hypothetical constructs versus intervening variables: A re-appraisal of the three-systems model of anxiety assessment"

psycnet.apa.org/record/1983-...
September 22, 2025 at 9:03 AM