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David Behery

@dahery.bsky.social
186 followers 192 following 30 posts

post-bac @kempnerinstitute.bsky.social‬ at Harvard in CCNLab under @gershbrain.bsky.social and @tomerullman.bsky.social beheryd.github.io

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Reposted by David Behery
Vivian Paulun @vivianpaulun.bsky.social · 25/09/2026
🚨 Preprint alert! 👶🧠🌊 "The Emergence of a Distinction between Things and Stuff" osf.io/preprints/ps... So excited to share my first infant study, with the wonderful Sanghee Song and Liz Spelke.🎉 Do babies expect sand to behave differently from solid objects? 🧵1/5
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Tomer Ullman @tomerullman.bsky.social · 22/09/2026
new preprint: "Directing large language models to follow the letter or spirit of the law" arxiv.org/pdf/2609.23083 (by Qian , Li, Chen, Murthy @soniakmurthy.bsky.social , Belinkov, and me) this is particularly cool/important, and I'm allowed to say it because it was headed by @pqian.bsky.social
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Ryan Truong @heyodogo.bsky.social · 10/09/2026
We present PlayTrain, a new Reinforcement Learning (RL) framework that reimagines how we build video-game environments for RL by harnessing LLMs’ ability to write JavaScript games. PlayTrain turns single-file JS browser games into RL environments ready for efficient training.
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Arthur Prat @arthurpr4t.bsky.social · 09/09/2026
We derived six laws of psychophysics from a single efficient-coding equation. The laws include Weber's law; scaling laws in visual working memory (which had been noted before, but with unclear theoretical justification); Wei & Stocker's law of human perception; arthurprat.com/pdfs/Prat-Ca...
arthurprat.com
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The Transmitter @thetransmitter.bsky.social · 07/09/2026
I fear that placing too much emphasis on a specific interpretation of dimensionality, or treating dimensionality as an end-all quantification of some aspect of neural computation, may lead us down the wrong path, writes @mattperich.bsky.social. #neuroskyence www.thetransmitter.org/neural-dynam...
thetransmitter.org
Dimensionality—neuroscience’s red herring?
Placing too much emphasis on a specific interpretation of dimensionality may lead neuroscience down the wrong path.
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Kempner Institute at Harvard University @kempnerinstitute.bsky.social · 31/08/2026
This month, the Kempner Institute bids farewell to research fellows Wilka Carvalho, @andykeller.bsky.social, and Gabriel Poesia. Learn more about their innovative work at the @kempnerinstitute.bsky.social and next steps: bit.ly/4d9ATGg
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Kempner Institute Celebrates the Work of Research Fellows Wilka Carvalho, T. Anderson Keller, and Gabriel Poesia - Kempner Institute
As Kempner Institute Research Fellows Wilka Carvalho, T. Anderson (Andy) Keller, and Gabriel Poesia conclude their fellowships this month, the Institute bids farewell to three scholars whose work has ...
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Arthur Prat @arthurpr4t.bsky.social · 21/08/2026
We broke Weber's law. By manipulating the prior (ie the frequencies of small and large magnitudes), we changed how people's accuracy depended on magnitude. When large magnitudes were more frequent, subjects became more precise about them. This points to efficient coding, dynamically implemented.
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Kempner Institute at Harvard University @kempnerinstitute.bsky.social · 03/08/2026
The application is now open for our Kempner Institute Research Fellowship! Postdocs studying the foundations of intelligence or applications of AI are encouraged to apply. Learn more and apply by Oct. 1: bit.ly/4pRzHNb
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Kempner Research Fellowship - Kempner Institute
The Kempner brings leading, early-stage postdoctoral scientists to Harvard to work on projects that advance the fundamental understanding of intelligence.
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Tomer Ullman @tomerullman.bsky.social · 03/08/2026
ASMR ISN'T REAL | 10 Hour Rant 😌 Muttering, Growling, Tapping 😴 (fast sleep)
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Ilenna Jones @ilennaj.bsky.social · 31/07/2026
What does synapse position buy a neuron? We trained a dendritic network to place its own synapses on a covariance task. It clustered correlated inputs onto shared branches, and shuffling that placement destroyed performance while every weight stayed intact. Preprint: arxiv.org/abs/2607.24503 🧵-->
arxiv.org
Synaptic clustering emerges from learning and supports covariance discrimination
Functional synapse clusters (FSCs) are synapses with correlated presynaptic activity that are colocalized on the same neuronal dendritic branch. FSCs have been observed after learning in cortical and ...
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The Onion @theonion.com · 27/07/2026
CHICAGO—Pulling out their phones to capture footage of the extraordinary event, lucky participants in a Chicago architecture tour reportedly witnessed a rare live feeding of the Willis Tower on Monday.
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Taylor Webb @taylorwwebb.bsky.social · 26/07/2026
I'm recruiting two postdocs (or potentially PhD students) to work on projects at the intersection of cognition, neuroscience, and AI (with a particular emphasis on mechanistic interpretability). Apply here: docs.google.com/forms/d/e/1F... and please share!
docs.google.com
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Kempner Institute at Harvard University @kempnerinstitute.bsky.social · 15/07/2026
We're thrilled to introduce the 2026 cohort of #KempnerInstitute Graduate Fellows! This year’s recipients include nine incoming and seven continuing graduate students enrolled across six @harvard.edu Ph.D. programs. Read more: bit.ly/3TkYe0G #AI #NeuroAI #ML
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Kempner Institute Announces Recipients of 2026 Graduate Fellowships - Kempner Institute
Cambridge, MA — The Kempner Institute for the Study of Natural and Artificial Intelligence today announced the names of 16 students chosen as the incoming 2026 cohort of Kempner graduate […]
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Liu, Shuze @liushuze.bsky.social · 10/07/2026
We're looking for volunteers for our #CCN2026 community event's live problem-solving demos! Join a 10min think-aloud session solving an everyday planning task or playing a video game, and help kick off our panel discussions. 🎬 🙌 Please sign up here if you're interested: forms.gle/D7HNwFE1pet9...
forms.gle
CCN 2026 Naturalistic Problem Solving event interest form
Please fill out this form if you're interested in attending our community event at CCN 2026! No sign-up required to join, but an RSVP helps us get a headcount. Time: Wednesday, 5th August 2026, 16:0...
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Liu, Shuze @liushuze.bsky.social · 06/07/2026
Do people solve hard problems by first building a mental model, then searching for the best solution? With @gershbrain.bsky.social, our new manuscript suggests a different route: people often start by retrieving cached solutions, and scaffold representations around them. osf.io/preprints/ps...
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The Transmitter @thetransmitter.bsky.social · 29/06/2026
To celebrate Pride Month, @thetransmitter.bsky.social spoke with three researchers to better understand how institutional support, harassment and policy intersect to shape LGBTQ neuroscientists’ careers. #neuroskyence #pride By Paige Miranda www.thetransmitter.org/science-and-...
thetransmitter.org
New survey quantifies experiences of LGBTQ+ neuroscientists
A survey of more than 400 LGBTQIA+ neuroscientists reveals challenges and actionable steps institutions can take to foster inclusion.
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Kempner Institute at Harvard University @kempnerinstitute.bsky.social · 22/06/2026
We’re thrilled to announce the 2026 cohort of post-bac scholars! Five recent college grads will undertake mentored research & professional development through the #KempnerInstitute Post-Baccalaureate Program. Read more: bit.ly/4vv9mGA @gsas.harvard.edu #AI #NeuroAI
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Announcing 2026 Kempner Post-Baccalaureate Scholars - Kempner Institute
The Kempner Institute for the Study of Natural and Artificial Intelligence at Harvard is pleased to announce the 2026 cohort of scholars awarded placement in the Kempner Institute Post-Baccalaureate P...
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Alicia Chen @aliciamchen.bsky.social · 16/06/2026
New paper with @rebeccasaxe.bsky.social "Expectations of reciprocal generosity are specific to equal relationships," in @openmindjournal.bsky.social. Thread below! Article: doi.org/10.1162/opmi... MIT News: news.mit.edu/2026/would-y...
news.mit.edu
Would you return a favor? Scientists say it depends on the relationship
People generally only engage in reciprocal generosity with others of equal or unknown status, MIT researchers experimentally demonstrated. During repeated interactions between people of different soci...
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Chaz Firestone @chazfirestone.bsky.social · 15/06/2026
It’s a bird, it’s a plane, it’s…another creative & impactful project from the rocket-fueled @talboger.bsky.social, applying the wickedly cool “visual anagrams” method to animacy! Read the paper in @elife.bsky.social today, then attend his presentation at @socphilpsych.bsky.social later this week. 🦆✈️
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Tomer Ullman @tomerullman.bsky.social · 28/05/2026
Patient: I can't do mental rotation and it's making me real sad :( Therapist: Oh come on, let's turn that frown upside-down! Patient: :(
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Kempner Institute at Harvard University @kempnerinstitute.bsky.social · 15/05/2026
Congratulations to our first cohort of Kempner post-bacs, who recently presented capstone research spanning AI & neuroscience, marking two years of intensive work and collaboration! Read more: bit.ly/49391Sr @shamkakade.bsky.social @blsabatini.bsky.social @dmelis.bsky.social
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Inaugural Kempner Post-Baccalaureate Capstone Showcases Work of First Cohort - Kempner Institute
Allston, MA — The Kempner Institute recently hosted its inaugural Post-Baccalaureate Capstone Event, celebrating the first four scholars as they near completion of the Kempner Post-Baccalaureate Progr...
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Tomer Ullman @tomerullman.bsky.social · 14/05/2026
woah look at this amazing line-up of speakers (and also Tomer Ullman), talking about Intuitive Physical Reasoning at #vss2026 tomorrow! I'd be there if I could, and I can, so I will. ~*~*~*~*~*~*~*~* @nancykanwisher.bsky.social @rtpramod.bsky.social @shariliu.bsky.social SP Arun Kelsey Allen
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Tomer Ullman @tomerullman.bsky.social · 14/05/2026
out now in Psych Review, a project many years in the making: "Reverse Engineering the Centered Self" bit.ly/4wp9fgN
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cogscikid.bsky.social @cogscikid.bsky.social · 07/05/2026
Do RL agents really need to replan from scratch for every new goal? Why do rodents "preplay" goals they haven't pursued? We think these questions share a candidate answer.
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Arthur Prat @arthurpr4t.bsky.social · 21/04/2026
The "Version of Record" of my paper with Mike Woodford is finally there. I am very glad with this paper that points to new laws of psychophysics, which we derived from a carefully considered principle of endogenous efficient coding.
elifesciences.org
Endogenous precision of the number sense
A theory of efficient coding wherein the precision of representations is endogenous, task-dependent, and prior-dependent predicts scaling laws for imprecision and is supported by numerosity perception...
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Sam Gershman @gershbrain.bsky.social · 21/04/2026
New work w/ Zach Kelso and @madeleinecsnyder.bsky.social www.biorxiv.org/content/10.6... Our negative results on classical conditioning in planarian flatworms. This was surprising, given the long history of work (including sensational findings of memory transfer and retention through decapitation).
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Halely Balaban @halely.bsky.social · 19/04/2026
New paper in PBR: "Working memory’s pointer system is governed by physical objecthood, not spatiotemporal information" rdcu.be/fd2tY Without valid WM pointers, we miss OBVIOUS changes in visible items; the study shows that this "resetting" process is all about objects and not spatiotemporal change!
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Jesse @requiemarm.bsky.social · 14/04/2026
you shouldn’t learn about bands from shady TikTok manipulation, you should learn about bands by hanging out with a girl you like but are also extremely afraid of
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Tomer Ullman @tomerullman.bsky.social · 05/04/2026
"And again I say unto you, It is easier for a camel to go through the eye of a needle, than for a rich man to enter into the kingdom of God"
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MIT Press @mitpress.bsky.social · 03/04/2026
How did “The Backrooms” go from an obscure creepypasta to an A24 film? For @shirachess.bsky.social, its rise reflects the “liminal aesthetic” and a new Institutional Gothic of corporate dread.
thereader.mitpress.mit.edu
‘Backrooms’ and the Rise of the Institutional Gothic
A new spin on an old genre replaces flesh-and-blood monsters with the mundanity of modern bureaucracy.
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Arthur Prat @arthurpr4t.bsky.social · 27/03/2026
Just posted an update of this study, where we show how the receptive fields of number-encoding neural populations shift and rescale with the prior — "distributed range adaptation" — in line with (dynamic) efficient coding, and predictive of behavior. Check it out! www.biorxiv.org/content/10.1...
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Jody Culham's Lab @culhamari-lab.bsky.social · 15/03/2026
Check out a new paper in Nature Communications Biology with @dianadima.com and Yalda Mohzenzadeh using fMRI-EEG fusion to reveal how brain responses to action videos and sentences unfold across the visual system over time www.nature.com/articles/s42...
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Neuroskeptic @neuroskeptic.bsky.social · 13/03/2026
What does it mean for culture to 'shape' cognition? pubmed.ncbi.nlm.nih.gov/41807136/ "Culture can (i) privilege some cognitive processes, while leaving alternative processes intact; (ii) prune unused alternative processes (iii) produce new cognitive processes; or (iv) have no effect"
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Sam Gershman @gershbrain.bsky.social · 26/02/2026
After several years of work, my lab is starting to put out our first papers on learning in a unicellular organism (Stentor coeruleus). Here we show evidence for a form of associative learning in Stentor: www.biorxiv.org/content/10.6...
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The Transmitter @thetransmitter.bsky.social · 24/02/2026
Functional MRI scans of more than 100 2-month-old infants suggest that they are capable of distinguishing among a variety of different objects. The findings challenge perceptions of cognitive development as a gradual process. By @helenak.bsky.social www.thetransmitter.org/cognitive-ne...
thetransmitter.org
Infant brain categorizes common objects by two months of age
Brain activity patterns in the ventral visual cortex appear to distinguish images across 12 categories, including birds and trees, fMRI scans suggest.
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Tomer Ullman @tomerullman.bsky.social · 18/02/2026
New preprint "Human-Like Coarse Object Representations in Vision Models" arxiv.org/pdf/2602.12486
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Matan Mazor @matanmazor.bsky.social · 10/02/2026
Very happy to see "Pretending not to know reveals a capacity for model-based self-simulation", a collaboration with @chazfirestone.bsky.social and @ianbphillips.bsky.social, out in Psych. Science! journals.sagepub.com/doi/10.1177... 🧵
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Sam Gershman @gershbrain.bsky.social · 05/02/2026
My lab is looking to recruit 1-2 paid summer interns to do wet lab work on learning in a unicellular organism (Stentor coeruleus). You can apply here: forms.gle/b47WpSobjFjo...
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Sam Gershman @gershbrain.bsky.social · 03/02/2026
A new and improved version of TheoryCoder, which learns to play video games in a human-like way by synthesizing both high-level abstractions and a low-level model of game mechanics: arxiv.org/abs/2602.00929
arxiv.org
Learning Abstractions for Hierarchical Planning in Program-Synthesis Agents
Humans learn abstractions and use them to plan efficiently to quickly generalize across tasks -- an ability that remains challenging for state-of-the-art large language model (LLM) agents and deep rei...
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Nancy Kanwisher @nancykanwisher.bsky.social · 02/02/2026
Fighting wins! www.nytimes.com/2026/02/02/u...
nytimes.com
Trump Drops Demand for Cash From Harvard After Stiff Resistance
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Tomer Ullman @tomerullman.bsky.social · 29/01/2026
What's going on in aphantasia? Balaban and I recently argued it might be 'broken rendering'; but then why do normies bother rendering anything? Monzel, Zeman & co wrote an interesting response: www.cell.com/trends/cogni... ...and this is our response response: www.cell.com/trends/cogni...
tomerullman.org
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Tomer Ullman @tomerullman.bsky.social · 27/01/2026
now accepted at ICLR! 🐺🥳🐺 arxiv.org/abs/2506.20666
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The Transmitter @thetransmitter.bsky.social · 22/12/2025
Amid the rise of billion-parameter models, I argue that toy models, with just a few neurons, remain essential—and may be all neuroscience needs, writes @marcusghosh.bsky.social. #neuroskyence www.thetransmitter.org/theoretical-...
thetransmitter.org
Not playing around: Why neuroscience needs toy models
Amid the rise of billion-parameter models, I argue that toy models, with just a few neurons, remain essential—and may be all neuroscience needs.
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Harvard Kenneth C. Griffin Graduate School of Arts and Sciences @gsas.harvard.edu · 17/12/2025
Even as Atte Kadoma and Isaias Ghezae are immersed in demanding PhD programs at Harvard, being resident advisor brings balance to their lives and enriches both their student experience and their scholarly pursuits.
gsas.harvard.edu
Building Community, Spreading Joy
Even as Atte Kadoma and Isaias Ghezae are immersed in demanding PhD programs at Harvard, being  resident advisor brings balance to their lives and enriches both their student experience and their…
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David Behery @dahery.bsky.social · 16/12/2025
Super great opportunity!
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Tomer Ullman @tomerullman.bsky.social · 10/12/2025
new: Eric Bigelow @ericbigelow.bsky.social suggests the 2 main ways of controlling LLMs (prompting & steering) can be understood as changing model beliefs (as in Bayesian belief updating) "Belief Dynamics Reveal the Dual Nature of In-Context Learning & Activation Steering" arxiv.org/pdf/2511.00617
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David Behery @dahery.bsky.social · 08/12/2025
Thanks Alex for the opportunity to work on this project!
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Alexandra Keinath @atkeinath.bsky.social · 08/12/2025
Another new paper from the lab: Predictive theories like the SR imply that navigators who navigate differently should have cognitive maps which differ in predictable ways. Here we show that this holds in mouse hippocampal CA1. www.sciencedirect.com/science/arti...
sciencedirect.com
Environmental representations in mouse hippocampal CA1 reflect the predictive structure of navigation
Predictive theories of cognitive mapping propose that these representations encode the predictive relationships among contents as experienced by the n…
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depths of wikipedia @depthsofwikipedia.bsky.social · 06/12/2025
"abandoned teddy bears" category on wikimedia commons
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