Elizabeth Jiwon Im

AI Surrogates and illusions of generalizability in cognitive science Recent advances in artificial intelligence (AI) have generated enthusiasm for using AI simulations of human research participants to generate new know…

Can AI simulations of human research participants advance cognitive science? In @cp-trendscognsci.bsky.social, @lmesseri.bsky.social & I analyze this vision. We show how “AI Surrogates” entrench practices that limit the generalizability of cognitive science while aspiring to do the opposite. 1/

We’re recruiting a postdoctoral fellow to join our team! 🎉

I’m happy to share that I’ve opened back up the search for this position (it was temporarily closed due to funding uncertainty).

See lab page and doc below for details!

infant data from experiment 1

conceptual schema for different habituation models

title page

results from experiment 2 with adults

Ever wonder how habituation works? Here's our attempt to understand:

A stimulus-computable rational model of visual habituation in infants and adults doi.org/10.7554/eLif...

This is the thesis of two wonderful students: @anjiecao.bsky.social @galraz.bsky.social, w/ @rebeccasaxe.bsky.social

🚨New paper out w/ @gershbrain.bsky.social & @fierycushman.bsky.social from my time @Harvard!

Humans are capable of sophisticated theory of mind, but when do we use it?

We formalize & document a new cognitive shortcut: belief neglect — inferring others' preferences, as if their beliefs are correct🧵

Flyer for the event!

*Sharing for our department’s trainees*

🧠 Looking for insight on applying to PhD programs in psychology?

✨ Apply by Sep 25th to Stanford Psychology's 9th annual Paths to a Psychology PhD info-session/workshop to have all of your questions answered!

📝 Application: tinyurl.com/pathstophd2025

New Open dataset alert:
🧠 Introducing "Spacetop" – a massive multimodal fMRI dataset that bridges naturalistic and experimental neuroscience!

N = 101 x 6 hours each = 606 functional iso-hours combining movies, pain, faces, theory-of-mind and other cognitive tasks!

🧵below

🚨New preprint with my stellar student Junsong

A Small-World Mind Theory of social cognition doi.org/10.31234/osf...

Big network, close connection🤯

It explains why low-dimensional findings dominate & high-dimensional evidence emerges

Naturalistic designs matter to understanding the complex mind

Can self supervised learning help understand how the brain learns to see the world?

Our latest study, led by Josephine Raugel (FAIR, ENS), is now out:

📄 arxiv.org/pdf/2508.18226
🧵 thread below

Social inference brain networks in autistic adults during movie-viewing: functional specialization and heterogeneity - Molecular Autism Background Difficulty in social inferences is a core feature in autism spectrum disorders (ASD). On the behavioral level, it remains unclear whether reasoning about others’ mental states (Theory of Mi...

❗New Paper Alert ❗

We found some (but overall weak) evidence for greater differential responses in brain networks underlying theory of mind inferences than those involved in empathic responses in autism. #neuroskyence #autism #openaccess
@hilaryrichardson.bsky.social

rdcu.be/eBZwE

Two new preprints from our lab!
@sabinemuzellec.bsky.social leads work on reverse(Brain➡ ANN) predictivity showing gaps in forward(ANN ➡ Brain) metrics shorturl.at/bnoFl
@marenwehrheim.bsky.social leads work on facial expression emerging from shared not segregated neural subspaces. shorturl.at/QAIl4

Job alert: I'm hiring a postdoc for my lab at CU Boulder starting Fall 2026!

We study person perception, stereotyping & prejudice, and intervention science using behavioral & neuroimaging methods.

Link: jobs.colorado.edu/jobs/JobDeta...

Review starts Nov 1 and continues until filled.

So cool to see our project, spearheaded by Igor Bascandziev, featured in Harvard's 'Usable Knowledge'!

Investigating action topography in visual cortex and deep artificial neural networks High-level visual cortex contains category-selective areas embedded within larger-scale topographic maps like animacy and real-world size. Here, we propose action as a key organizing factor shaping vi...

New preprint out! We propose that action is a key dimension shaping the topographic organization of object categories in lateral occipitotemporal cortex (LOTC)—and test whether standard and topographic neural networks capture this pattern. A thread:

www.biorxiv.org/content/10.1...

🧵 1/n

Lazarus et al. (2025): A simple act with a lasting impact: Holding babies skin-to-skin in the NICU helped support their development and reduced differences linked to family income. Early touch can be a powerful way to promote equity from the very start #infancypapers doi.org/10.1111/infa...

Visual Word Form Area demonstrates individual and task-agnostic consistency but inter-individual variability Ventral Occipital Temporal Cortex (VOTC) is home to a mosaic of categorically-selective functional regions that respond to visual stimuli. Within left VOTC lies the Visual Word Form Area (VWFA) - a te...

next preprint is out - ever wonder why findings about VWFA differ so much? @jyeatman.bsky.social @mayayablonski.bsky.social , Mia Fuentes-Jimenez, Hannah Stone, and I might have the answer...

www.biorxiv.org/content/10.1...

continuum of inductive potential from low (relatively minimal categories whose members are dissimilar) to high (coherent meaningful categories whose members are similar) above a cartoon child. an icon of a tiger appears under "high" inductive potential, with "closes eyes when happy" appearing as a feature of a tiger in a zoo, with an arrow pointing to the tiger icon, and a dashed arrow extending it to a tiger on a savanna. an icon of a pedestrian appears under "low" inductive potential, with "closes eyes when happy" appearing as a feature of a woman on a street, with Xs over arrows pointing to the pedestrian icon, and to a different pedestrian.

📣 new paper! people use some categories to generalize (e.g., we generalize something we learn about one tiger 🐯 to other tigers 🐅), but not others (e.g., we don't generalize from one pedestrian 🚶 to other pedestrians 🚶‍♂️). how do people learn what categories allow for generalization? 🧵

Attractor dynamics of working memory explain a concurrent evolution of stimulus-specific and decision-consistent biases in visual estimation People exhibit biases when perceiving features of the world, shaped by both external stimuli and prior decisions. By tracking behavioral, neural, and mechanistic markers of stimulus- and decision-rela...

Excited to share that our paper is now out in Neuron @cp-neuron.bsky.social (dlvr.it/TM9zJ8).

Our perception isn't a perfect mirror of the world. It's often biased by our expectations and beliefs. How do these biases unfold over time, and what shapes their trajectory? A summary thread. (1/13)

We tried very hard to study language and communication during strategic games like prisoner's dilemma. Veronica Boyce did many experiments chasing what could have been an interesting result but in the end wasn't very strong. Now she's written a nice postmortem: osf.io/preprints/ps...

New preprint! Led by Bill Pepe, with @brandonwoo.bsky.social and @ashleyjthomas.bsky.social. We asked if infants think helping and hindering stem from actors' dispositions (i.e. good/nice v bad/mean) or their social relationships, by testing expectations for future behavior: osf.io/preprints/ps...

🚨New paper! We know models learn distinct in-context learning strategies, but *why*? Why generalize instead of memorize to lower loss? And why is generalization transient?

Our work explains this & *predicts Transformer behavior throughout training* without its weights! 🧵

1/

Intersection of spatial and numerical cognition in the developing brain Abstract. Early mathematical development is thought to depend on visuospatial processing, yet neural evidence for this relationship in young children has b

So excited to see this paper with @ckaicher.bsky.social and @cantlonlab.bsky.social finally out!

Domain Interactions | CogSci 2025 Organizers

If you are attending #CogSci2025 I hope you will consider attending our pre-conference workshop on July 29 - "Putting it Together: Interactions Between Domains of Cognition"
sites.google.com/view/cogsci2...

I’m happy to be at #VSS2025 and share what our lab has been up to this year!

I’m also honored to receive this year’s young investigator award and will give a short talk at the awards ceremony Monday

Despite everything going on, I may have funds to hire a postdoc this year 😬🤞🧑‍🔬 Open to a wide variety of possible projects in social and cognitive neuroscience. Get in touch if you are interested! Reposts appreciated.

1/
New Preprint (also my first time posting on BlueSky haha)!!!
How do individual differences in habituation shape dishabituation magnitude?
Work with Qiong Cao, @mcxfrank.bsky.social and @shariliu.bsky.social

osf.io/preprints/ps...

Congrats Natalia!!

Shown is an example image that participants viewed either in EEG, fMRI, and a behavioral annotation task. There is also a schematic of a regression procedure for jointly predicting fMRI responses from stimulus features and EEG activity.

I am excited to share our recent preprint and the last paper of my PhD! Here, @imelizabeth.bsky.social, @lisik.bsky.social, Mick Bonner, and I investigate the spatiotemporal hierarchy of social interactions in the lateral visual stream using EEG-fMRI.

osf.io/preprints/ps...

#CogSci #EEG

my first time joining @stanfordpsypod.bsky.social as a co-host! It was super cool to talk with Kendrick. Go listen to it 🤩

Sayaka Murata’s Alien Eye The author of “Convenience Store Woman” has gained a cult following by seeing the ordinary world as science fiction.

Elif Batuman profiles Sayaka Murata, the best-selling author of “Convenience Store Woman,” who has gained a cult following by seeing the ordinary world as science fiction.

Hippocampal encoding of memories in human infants Humans lack memories for specific events from the first few years of life. We investigated the mechanistic basis of this infantile amnesia by scanning the brains of awake infants with functional magne...

Why do we not remember being a baby? One idea is that the hippocampus, which is essential for episodic memory in adults, is too immature to form individual memories in infancy. We tested this using awake infant fMRI, new in @science.org #ScienceResearch www.science.org/doi/10.1126/...