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Sami Yousif

@samiyousif.bsky.social
2.7K followers 316 following 87 posts

Asst Prof @ Ohio State. I study how we perceive and represent the (spatial) world. More here: spatialcognitionlab.org

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Sami Yousif @samiyousif.bsky.social · 29/09/2026
Two special things about this project: (1) This is our first project using a live, interactive game. (2) This is our first (hopefully not last!) collab. with @dorsaamir.bsky.social who was so awesome to work with. Thanks @chazfirestone.bsky.social for letting us borrow @talboger.bsky.social!
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Sami Yousif @samiyousif.bsky.social · 15/09/2026
My lab has been really interested in topological perception the past two years. In a new paper, we ask: How does a topological perspective (re-)shape our understanding of visual complexity? Work led by one of our many wonderful undergraduate students, Ashna Shah! link.springer.com/article/10.3...
link.springer.com
Topological structure and the creation of visual complexity - Psychonomic Bulletin & Review
What does it mean for something to be complex? Fundamentally, complexity is a cue that something is less easily represented by our minds. With this fact in view, complexity becomes a tool: By understa...
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Jake Quilty-Dunn @quiltydunn.bsky.social · 11/09/2026
New paper, co-authored with Justin Wood, in @cp-trendscognsci.bsky.social: The Nativist-Empiricist Debate Is Broken We argue that radical nativism and radical empiricism are compatible and, in some cases, both plausibly true. So something is wrong. 🧵 Author share link here, valid til Oct 31:
authors.elsevier.com
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Sami Yousif @samiyousif.bsky.social · 10/09/2026
Days after Mahwish stepped on campus as an undergrad two years ago, I recruited her into my lab, and we started talking about pursuing what, at the time, was the most ambitious project of my career - to study geometric representation through drawing. It was a great joy to work with her on this!
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Sami Yousif @samiyousif.bsky.social · 28/08/2026
For anyone who enjoys thinking about the formats of mental representation: I found this paper from Rodrigo Garro-Rivero to be thought-provoking! philpapers.org/rec/GARACA-19
philpapers.org
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Sami Yousif @samiyousif.bsky.social · 26/08/2026
Excited about a new paper (w @russellepstein.bsky.social): "Cognitive maps as a medium for thought", in @cp-trendscognsci.bsky.social! We discuss how maps are an important 'middle ground' rep. medium, and how they may interact with a 'language of thought'. www.sciencedirect.com/science/arti...
sciencedirect.com
Cognitive maps as a medium for thought
Cognitive maps are essential for navigation, but to what extent are they involved in thinking more broadly? In this opinion article, we examine whethe…
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Sam Gershman @gershbrain.bsky.social · 18/08/2026
@arthurpr4t.bsky.social has a new preprint with important results on a famous psychophysical law (Weber's law). It isn't, in fact, a law, because it can be broken. A more fundamental principle (efficient coding) shows when and why Weber's law holds true. www.biorxiv.org/content/10.6...
biorxiv.org
Efficient coding makes and breaks Weber's law
Weber's law is a rare quantitative regularity in psychology, yet its origins remain debated. Here we provide causal evidence that it arises from the more fundamental principle of efficient coding. Thi...
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Sami Yousif @samiyousif.bsky.social · 18/08/2026
There's been discussion about Prolific's dynamic pricing model here on bluesky. To learn more about this (and to make loads of cash, apparently!) I decided to become an actual Prolific participant. See thread below, but TLDR: What's happening on Prolific is not what I expected!👇
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tal boger @talboger.bsky.social · 13/08/2026
BBS recently published a great piece by @mdubova.bsky.social & @sabinasloman.bsky.social on “Excess capacity learning”. I argue D&S’s framework overlooks a special kind of representation that encodes information both minimally and perfectly: lossless compression. philpapers.org/archive/BOGC...
Figure for my BBS commentary ("Compression without compromise") on Dubova & Sloman's target article ("Excess capacity learning")
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Gabe Waterhouse @gabrielwaterhouse.bsky.social · 13/08/2026
Now out in JEP:G (w/ samiyousif.bsky.social)! Here, we explore what quantities (e.g., number, area, size) are perceived most automatically (and spoiler: it’s more complicated than we thought!). psycnet.apa.org/record/2028-...
psycnet.apa.org
APA PsycNet
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Melissa Kibbe @levelsof.bsky.social · 31/07/2026
Now out in an issue! Children find it easier to represent uncertainty about *what* an object is than *where* an object is, with interesting implications for both early possibility reasoning and object representations ~~ Check it out 👉 direct.mit.edu/opmi/article...
direct.mit.edu
Children’s Representations of Possibility: Uncertainty About “What” Is Easier Than Uncertainty About “Where”
Abstract. Young children struggle in situations involving mere possibility, such as when a target object could be in one of two possible locations. This difficulty is often interpreted as a general li...
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Sami Yousif @samiyousif.bsky.social · 15/06/2026
🫨
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Sami Yousif @samiyousif.bsky.social · 03/06/2026
There are many reasons I'm excited about this project. One is just the sheer amount of data involved. There are 13 different experiments included here -- a lab record! -- including several unique paradigms and data from adults and children.
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tal boger @talboger.bsky.social · 26/05/2026
Complexity is ubiquitous in the world around us. But different stimuli are complex for different reasons. Does the mind nevertheless represent a ‘unified’ notion of complexity across domains? In @nathumbehav.nature.com, @chazfirestone.bsky.social & I show the answer is: yes! osf.io/preprints/ps...
Complex and simple stimuli across a variety of domains. Even though these stimuli are complex for different reasons, we suggest the mind unifies them by their complexity. https://osf.io/preprints/psyarxiv/p9xe3_v1
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Sam McDougle @actlab.bsky.social · 08/05/2026
Thrilled to have this preprint out, from the amazing Zekun Sun! "Motor abstraction training generalizes to the refinement of specific movement patterns" In brief, across 8 experiments we found evidence of a causal role for abstract representations in motor learning www.biorxiv.org/content/10.6...
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Sami Yousif @samiyousif.bsky.social · 14/05/2026
Sadly I will not be at VSS this year, but here's what our lab is up to! (In solidarity with many VSS attendees, however, I may be foregoing many hours of sleep -- not for long walks on the beach but due to the anticipated arrival of a second child any day now...)
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Joey Saito @jsaito25.bsky.social · 13/05/2026
Memorability as an Emergent Property: How Representational Structure Creates Apparent Intrinsic Effects osf.io/preprints/ps...
osf.io
OSF
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Brynn Sherman @brynnsherman.bsky.social · 04/05/2026
After noticing another (significant!) drop in data quality this morning, I saw that Prolific is now recommending that participants be paid $48/hr
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Brynn Sherman @brynnsherman.bsky.social · 21/04/2026
New preprint led by awesome undergrad Abby Bonno! By probing temporal memory for individual items in a sequence, we uncover a 'representational space' of memories that reflects the structure of encoded experiences and provides insight into how different kinds of structure shape memory. osf.io/t5kyx
osf.io
OSF
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Sami Yousif @samiyousif.bsky.social · 25/03/2026
Recently, (recommended) prices at @joinprolific.bsky.social have doubled. Simultaneously, data quality and collection speed seem to have gone down noticeably (especially speed). Are others having this experience? These changes make the platform significantly less viable for our lab.
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Lauren Aulet @laurenaulet.bsky.social · 19/03/2026
We plan to hire a post doc to start in Fall 2026 (flexible), in the Aulet Lab at UMass Amherst, funded for two years. The postdoc will help establish our developmental fMRI research program studying symbolic number acquisition in 4-8 year old children (among other things!).
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tal boger @talboger.bsky.social · 06/03/2026
A few years ago, my favorite website (@puddingviz.bsky.social) put out this great piece analyzing a study of how randomizing ability changes with age. It includes demos where readers produce sequences of random coin flips, dice rolls, and locations in a 3x3 grid. pudding.cool/2022/04/rand...
pudding.cool
We think this cool study we found is flawed. Help us reproduce it.
Are 25 year olds really more random than 60 year olds?
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Sami Yousif @samiyousif.bsky.social · 27/02/2026
(Perceptual) space and time are warped by the gravity of objects and events in their vicinity. There's been a flurry of work recently documenting examples of this gravity, all resulting in some really neat illusions. @brynnsherman.bsky.social and I discuss all of those, here: rdcu.be/e5SWo
rdcu.be
Distortions of space and time in and around objects and events
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Sam McDougle @actlab.bsky.social · 09/02/2026
Very proud that this is finally out! Come for the new auditory illusion, stay for the brain imaging and speech analysis…..
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Lauren Aulet @laurenaulet.bsky.social · 03/02/2026
first empirical paper from the Aulet lab! What does learning to count do to a brain? We trained neural networks on different tasks and only counting (i.e., predicting the number of dots in a dot array) reorganized representations around number. New preprint:
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Sami Yousif @samiyousif.bsky.social · 03/02/2026
Over the past several months, I've been working (in collaboration with www.thoughtscape.com) to rebrand my lab and improve our website. This new version better captures our core interests/ideas. I'm really, really thrilled with how things turned out: spatialcognitionlab.org
spatialcognitionlab.org
Spatial Cognition Lab @ OSU
The Spatial Cognition Lab studies how we perceive, represent, and interact with the spatial world around us — all in the service of understanding how the mind works in general. We're also interested i...
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Brynn Sherman @brynnsherman.bsky.social · 20/01/2026
In a new paper, I delve into these two findings and muse on when prediction might help vs. hurt memory (and discuss why this matters for models of memory and the hippocampus). This is my first solo-author paper, and I had a lot of fun putting these ideas on paper! direct.mit.edu/opmi/article...
direct.mit.edu
How Prediction of the Future Affects Encoding of the Present: Cooperation or Competition?
Abstract. Each day brings new experiences and the opportunity to form new episodic memories. However, our everyday experiences are not isolated episodes; rather, there is significant spatial and tempo...
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Gabe Waterhouse @gabrielwaterhouse.bsky.social · 05/01/2026
I am very excited to announce that over the holidays, my first ever paper (w/ @samiyousif.bsky.social) was published in Cognitive Science! Here, we describe a new illusion of *number*: The Crowd Size Illusion! onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
The “Crowd Size Illusion” and the Relativity of Number Perception
When we investigate busy visual scenes, how do we estimate the number of objects that we see? Most work on number perception answers this question by focusing on properties of the to-be-estimated set...
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Sami Yousif @samiyousif.bsky.social · 08/12/2025
This dispute will have to be settled 'on the field' next semester. Looking forward to it. 👋
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Sami Yousif @samiyousif.bsky.social · 08/12/2025
Last night, we hosted the inaugural momentslab.org vs. spatialcognitionlab.org competition. After going down early following a disappointing Jenga loss, our team rallied to a 2-1 victory, winning in Codenames and pool. Proud to have won against such tough competition! 🏆
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Brynn Sherman @brynnsherman.bsky.social · 29/10/2025
Our experience of time is powerfully shaped by boundaries between events (i.e., going from one meeting to the next). But what about time *within an event*? In new work, we find reliable distortions of time based on internal event structure (e.g., beginnings, middles, and ends)! tinyurl.com/n8mn2sn7
sciencedirect.com
Unfolding event structure distorts subjective time
Our experience of time is often distorted in striking ways. Although prior work has shown that boundaries between events can shape temporal perception…
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Experimental Philosophy @xphilosopher.bsky.social · 27/10/2025
There’s a deep difference between sentences like: (1) Jane caused the glass to break. vs. (2) Jane broke the glass. A surge of experimental philosophy research has led to some surprising discoveries about sentences like (2) [Thread]
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Sami Yousif @samiyousif.bsky.social · 15/10/2025
Are OSF view-only links broken? A journal keeps un-submitting our paper because the link doesn't work, but (a) it did work, just before the update, and (b) it says it should be working as usual in the OSF interface. Anyone else having this problem, or know of a solution?
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Dawei Bai @daweibai.bsky.social · 09/10/2025
Happy to share that our BBS target article has been accepted: “Core Perception”: Re-imagining Precocious Reasoning as Sophisticated Perceiving With Alon Hafri, @veroniqueizard.bsky.social, @chazfirestone.bsky.social & Brent Strickland Read it here: doi.org/10.1017/S014... A short thread [1/5]👇
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Jorge Morales @jorgemorales.me · 01/10/2025
Imagine an apple 🍎. Is your mental image more like a picture or more like a thought? In a new preprint led by Morgan McCarty—our lab's wonderful RA—we develop a new approach to this old cognitive science question and find that LLMs excel at tasks thought to be solvable only via visual imagery. 🧵
arxiv.org
Artificial Phantasia: Evidence for Propositional Reasoning-Based Mental Imagery in Large Language Models
This study offers a novel approach for benchmarking complex cognitive behavior in artificial systems. Almost universally, Large Language Models (LLMs) perform best on tasks which may be included in th...
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Brynn Sherman @brynnsherman.bsky.social · 19/09/2025
Last month, I launched my lab at Ohio State. Our lab website is now live, and we're recruiting graduate students this cycle! If you're interested in the cognitive (neuro)science of learning & memory, please reach out! www.momentslab.org
momentslab.org
Moments Lab
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Tristan Yates @tristansyates.bsky.social · 16/09/2025
How does spontaneous memory reinstatement at rest relate to episodic memory during development? And how do early experiences influence neural mechanisms of episodic memory encoding and reinstatement? New preprint! www.biorxiv.org/content/10.1...
biorxiv.org
Spontaneous reinstatement of episodic memories in the developing human brain
The hippocampus supports episodic memories in development, and yet how the brain stabilizes these memories determines their long-term accessibility. This study examined how episodic memories formed in...
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Sami Yousif @samiyousif.bsky.social · 15/09/2025
smh the bots are just repeating themselves at this point
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Sami Yousif @samiyousif.bsky.social · 15/09/2025
I am recruiting graduate students for Fall 2026 through both the cognitive and developmental areas at Ohio State. If you are interested in spatial cognition, visual perception, and/or mental representation -- please reach out! I'd love to hear from you. www.cogdevlab.org
cogdevlab.org
PCDL @ OSU
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Martin Wiener @martinwiener.bsky.social · 10/09/2025
Very excited to have @brynnsherman.bsky.social join us for the next @timingresforum.bsky.social Virtual Journal Club! Please join us for what should be a very interesting talk on her recent work! Sign-up details below: mailchi.mp/28692b147cb0...
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Rui Zhe Goh @ruizhegoh.bsky.social · 04/09/2025
Great to have another paper with @chazfirestone.bsky.social @ianbphillips.bsky.social and the brilliant Hanbei Zhou out! In this paper we demonstrate that stimuli within events are perceived further apart in time — an event-based analog of “object-based warping”. psycnet.apa.org/record/2026-...
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Jonathan F. Kominsky @jfkominsky.bsky.social · 31/08/2025
The human visual system has specialized modular processing for multiple distinct categories of causal events. My new paper with my lab manager Katharina Wenig in Cognitive Science, "Causal Perception(s)" Free open access: onlinelibrary.wiley.com/doi/epdf/10.... #CogSci #PsychSciSky 🧵(1/22)
onlinelibrary.wiley.com
Causal Perception(s)
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Sami Yousif @samiyousif.bsky.social · 28/08/2025
Visual adaptation is viewed as a test of whether a feature is represented by the visual system. In a new paper, Sam Clarke and I push the limits of this test. We show spatially selective, putatively "visual" adaptation to a clearly non-visual dimension: Value! www.sciencedirect.com/science/arti...
sciencedirect.com
Can we “see” value? Spatiotopic “visual” adaptation to an imperceptible dimension
In much recent philosophy of mind and cognitive science, repulsive adaptation effects are considered a litmus test — a crucial marker, that distinguis…
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tal boger @talboger.bsky.social · 19/08/2025
On the left is a rabbit. On the right is an elephant. But guess what: They’re the *same image*, rotated 90°! In @currentbiology.bsky.social, @chazfirestone.bsky.social & I show how these images—known as “visual anagrams”—can help solve a longstanding problem in cognitive science. bit.ly/45BVnCZ
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Brynn Sherman @brynnsherman.bsky.social · 24/07/2025
I'm recruiting a lab manager for my soon-to-be-launched lab at Ohio State! If you know of any recent grads who may be interested both in helping to build the lab and in developing skills in the cognitive neuroscience of memory, please share! osu.wd1.myworkdayjobs.com/en-US/OSUCar...
osu.wd1.myworkdayjobs.com
Research Associate
Screen reader users may encounter difficulty with this site. For assistance with applying, please contact hr-accessibleapplication@osu.edu. If you have questions while submitting an application, pleas...
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Association for Psychological Science @psychscience.bsky.social · 16/07/2025
In the latest #UndertheCortex, @brynnsherman.bsky.social from @upenn.edu shares that repeated experiences are more vividly remembered and are often perceived as having occurred further in the past than they did.
psychologicalscience.org
Time Warped: How Repetition Distorts Our Sense of Duration
Podcast: This guest's research uncovers a surprising illusion: Repeated experiences, which are more vividly remembered, are often perceived as having occurred further in the past than they did.
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Sami Yousif @samiyousif.bsky.social · 16/07/2025
There’s something funny about saying that someone caused something to happen when they didn’t act intentionally — as if that phrasing assigns unintended agency to them. Why is that? In this new paper below, we take a linguistic approach to answering this question. Lots of interesting data here!
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Sami Yousif @samiyousif.bsky.social · 26/06/2025
The first student-led paper from my lab -- from (first-year!!) undergraduate student @gabrielwaterhouse.bsky.social This is my favorite kind of project: A neat, visible illusion, with compelling data from multiple paradigms, plus some interesting theoretical implications. Check it out!
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Gabe Waterhouse @gabrielwaterhouse.bsky.social · 26/06/2025
I am excited to announce my first ever paper (w/ @samiyousif.bsky.social ) about a new illusion of *number*: the “Crowd Size Illusion”. osf.io/preprints/ps...
osf.io
OSF
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Sami Yousif @samiyousif.bsky.social · 25/06/2025
I have noticed that many cool people are starting labs at Ohio State right now. I've decided to follow their lead. Soon, my lab will be moving to Ohio State as well. You can learn more about our recent and upcoming work here: www.cogdevlab.org
cogdevlab.org
PCDL @ OSU
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