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Bella Fascendini

@bellafascendini.bsky.social
259 followers 246 following 38 posts

PhD student at Princeton🐯 | bellafascendini.github.io

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Reposted by Bella Fascendini
Tania Lombrozo @tanialombrozo.bsky.social · 06/10/2026
Out today!
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Tania Lombrozo @tanialombrozo.bsky.social · 03/10/2026
A short adapted excerpt from WHY WE ASK WHY was published in The Atlantic this morning! So excited to share this in advance of the book's publication on Oct 6! 😊 📕 www.theatlantic.com/science/2026...
theatlantic.com
AI Could Worsen a Common Cognitive Trap
Almost everyone knows less than they think.
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Dan Mirea @danmirea.bsky.social · 01/10/2026
Thrilled to announce that I will be joining the University of Miami as an Assistant Professor of Psychology next year! I am recruiting a PhD student to start in Fall 2027 — please reach out if you are interested in joining the lab! For more info check out my website: dan-mirea.com
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Tom McCoy @rtommccoy.bsky.social · 20/08/2026
Since many are starting grad school soon, let me re-share my One Big Tip™️ for research! Research involves many skills - collaborating, writing, presenting, etc. But many of these skills can be unified under a single overarching ability: theory of mind Blog post link in reply
Illustration of the blog post's main argument, summarized as: "Theory of Mind as a Central Skill for Researchers: Research involves many skills.If each skill is viewed separately, each one takes a long time to learn. These skills can instead be connected via theory of mind – the ability to reason about the mental states of others. This allows you to transfer your abilities across areas, making it easier to gain new skills."
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Bella Fascendini @bellafascendini.bsky.social · 11/08/2026
Super star! 🌟
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Reposted by Bella Fascendini
Steven Mesquiti @smesquiti.bsky.social · 10/08/2026
Excited to share a new Annual Review paper with @eriknook.bsky.social : "Large Language Models in Mental Health Research and Treatment." Here lay out what LLMs actually are and aren't, then take a census of how mental health research has used them so far, where it's heading 🧵1/n
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Tania Lombrozo @tanialombrozo.bsky.social · 27/07/2026
What do rubber ducks have to do with learning and AI? You can find out in my TEDx talk, released today as an Editor’s Pick at the YouTube TED Channel! www.youtube.com/watch?v=cbiy...
youtube.com
How you can learn in a world of information overload | Tania Lombrozo | TEDxNewEngland
YouTube video by TEDx Talks
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Elaine Wang @elainewang.bsky.social · 20/07/2026
Come say hello at #CogSci2026! Excited to be part of this incredible symposium!
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Bella Fascendini @bellafascendini.bsky.social · 26/06/2026
Huge thanks to my amazing collaborators: Kathryn McGregor, @maxdgu.bsky.social and @cocoscilab.bsky.social, and to Dilip Arumugam, Gianluca Bencomo, and Zhixu Silvia Tao for valuable feedback on this project! 🧡
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Bella Fascendini @bellafascendini.bsky.social · 26/06/2026
📄 Paper: doi.org/10.48550/arX... 💻 Code, data, and stimuli: github.com/bellafascendini/riddle-riddle
doi.org
The Riddle Riddle: Testing Flexible Reasoning in Large Language Models and Humans
Humans flexibly adapt their reasoning strategies to the requirements of a given problem. Large language models (LLMs) have performed well on many cognitive tasks, however, it is unclear whether this a...
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Bella Fascendini @bellafascendini.bsky.social · 26/06/2026
As LLMs are increasingly used to solve novel, complex problems, accuracy alone is not enough evidence of reasoning. We also need to ask whether they got the answer for the right reasons. The riddle riddle offers a simple way to test that.
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Bella Fascendini @bellafascendini.bsky.social · 26/06/2026
This work was inspired by @tomerullman.bsky.social's “illusion illusion” paradigm (arxiv.org/abs/2412.18613) where VLMs mistake illusion-like images for genuine optical illusions. In both cases, models respond to what a problem looks like rather than what it actually requires.🔮
arxiv.org
The Illusion-Illusion: Vision Language Models See Illusions Where There are None
Illusions are entertaining, but they are also a useful diagnostic tool in cognitive science, philosophy, and neuroscience. A typical illusion shows a gap between how something "really is" and how some...
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Bella Fascendini @bellafascendini.bsky.social · 26/06/2026
A memorization analysis further supported our hypothesis: models that reproduced more riddles near-verbatim after seeing only the first 40% were more accurate on genuine riddles (Spearman’s rho=.88, p=.002), but worse on matched riddle riddles.
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Bella Fascendini @bellafascendini.bsky.social · 26/06/2026
Humans and LLMs also made opposite mistakes: 🤖90.8% of LLM errors on riddle riddles involved applying inventive reasoning where none was needed. 🧑57.6% of human errors on genuine riddles involved defaulting to literal reasoning when inventive reasoning is needed.
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Bella Fascendini @bellafascendini.bsky.social · 26/06/2026
Results show a clean crossover: 🤖LLMs were more accurate on genuine riddles than riddle riddles (84.9% vs. 50.7%). 🧑Humans showed the opposite pattern (50.5% vs. 80.5%). ♟️We also found the same crossover in whether they used the correct reasoning strategy.
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Bella Fascendini @bellafascendini.bsky.social · 26/06/2026
To test whether humans and LLMs switch reasoning strategies, we created 30 matched riddle/riddle-riddle pairs. We evaluated 9 state-of-the-art models and 100 human adults, all of whom provided an answer and briefly explained their reasoning to each problem.
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Bella Fascendini @bellafascendini.bsky.social · 26/06/2026
Now consider the riddle riddle: "A cowboy rides into town on Friday, stays for three days, and rides out on Monday. How is this possible?" A flexible reasoner should recognize that the trick is no longer present and switch reasoning strategies (💡Friday + 3 days = Monday).
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Bella Fascendini @bellafascendini.bsky.social · 26/06/2026
Introducing the riddle riddle—problems that look like riddles but only require literal interpretations. First, consider a genuine riddle: "A cowboy rides into town on Friday, stays for three days, and rides out on Friday. How is this possible?" (💡Friday =🐴's name).
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Bella Fascendini @bellafascendini.bsky.social · 26/06/2026
LLMs perform well on many reasoning benchmarks, but accuracy alone doesn’t tell us how a model arrived at an answer. Did it actually reason, or match patterns from training data? To tease them apart, we need problems where what a task looks like differs from what it requires.
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Bella Fascendini @bellafascendini.bsky.social · 26/06/2026
New paper! w/ @cocoscilab.bsky.social🧵Can large language models reason flexibly, or have they learned what reasoning looks like? We introduce a new paradigm to test this question—the riddle riddle—and find that humans and LLMs show opposite patterns of performance. 📜
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Tania Lombrozo @tanialombrozo.bsky.social · 24/06/2026
I wrote a book! It's called WHY WE ASK WHY, and it's about the human drive to explain, combining psychology, philosophy, and stories. It will be released on October 6, but it's currently available for pre-order from Barnes & Noble at 25% off with code PREORDER25.
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Melanie Mitchell @melaniemitchell.bsky.social · 03/06/2026
It's always a treat to read Ted Chiang's thoughts on AI. www.theatlantic.com/philosophy/2...
theatlantic.com
No, Artificial Intelligence Is Not Conscious
Taken to its logical conclusion, this line of thinking is absurd—and damning.
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Casey Lewry @caseylewry.bsky.social · 21/05/2026
So excited that I’ll be joining @jesssalerno.bsky.social and Nick Schweitzer as a postdoc at Cornell starting this fall! Stay tuned for work on how people assign causal and moral responsibility in legal contexts!
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Bella Fascendini @bellafascendini.bsky.social · 15/05/2026
Congrats,Tom!! 🎉@cocoscilab.bsky.social
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Cognition @cognitionjournal.bsky.social · 23/04/2026
A computational theory of Aha! moments! New paper explaining why Aha! moments occur & why they feel so good. TLDR: They are a form of meta-cognitive prediction errors i.e. they occur when we surprise ourselves about our own abilities! @rachitdubey.bsky.social www.sciencedirect.com/science/arti...
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Bella Fascendini @bellafascendini.bsky.social · 18/03/2026
Registration deadline tomorrow! Come join our workshop! 😃✨
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Paul Middlebrooks @braininspired.bsky.social · 18/03/2026
Are the laws of thought woven from three golden threads? Tom @cocoscilab.bsky.social and I discuss some of the history and themes in logic, probability, and neural nets, in his new book The Laws of Thought. braininspired.co/podcast/233/
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Bella Fascendini @bellafascendini.bsky.social · 10/03/2026
For more details, visit: unified-motivation.github.io/cds. Feel free to direct questions to any of the organizers: @elainewang.bsky.social @bellafascendini.bsky.social @euniceyiu.bsky.social & @junyi.bsky.social. We hope to see you there! 😀
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Bella Fascendini @bellafascendini.bsky.social · 10/03/2026
📅 April 9, 12:30–3:30pm | Hotel Bonaventure, Montreal Featuring talks by @jessicas.bsky.social, @katenuss.bsky.social, Nicholas Haber & @davidmsilverman.bsky.social, with a closing discussion by @alisongopnik.bsky.social, @hyogweon.bsky.social & @julia-a-leonard.bsky.social.
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Bella Fascendini @bellafascendini.bsky.social · 10/03/2026
Are you attending @cogdevsoc.bsky.social 2026? Come join us for an afternoon pre-conference workshop on motivation in development! We'll bring together developmental, educational, and computational perspectives to ask: Can we build a unified account of motivation across the lifespan? ✨
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Killian McLoughlin @killianmcloughlin.bsky.social · 02/02/2026
Are you a grad student who wants to give a talk at Princeton’s psychology department (in-person or on Zoom)? Nominate yourself or someone you know: forms.gle/WN2ybYMuZiW3... Priority given to non-Ivy and URM students. International applicants welcome. Deadline is this Friday (Feb 6)!
forms.gle
Emerging Scholars in Psychological Science Speaker Nominations
Nominate yourself or another late-stage PhD student to speak at Princeton's Department of Psychology this academic semester (Spring 2026). The Emerging Scholars in Psychological Science (ESPS) talk ...
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Tania Lombrozo @tanialombrozo.bsky.social · 18/12/2025
This is an amazing book - highly recommend for experts and casual readers alike!
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Bella Fascendini @bellafascendini.bsky.social · 25/11/2025
Congrats, Alex!!! 🥳
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Leonard Learning Lab @leonardlearnlab.bsky.social · 20/11/2025
We are looking to hire a research assistant to help with data collection at our partner museum in Philadelphia! Share with your undergraduates or post-baccs who are looking for more experience in cog dev research! Please see the attached ad for more information: docs.google.com/document/d/1...
docs.google.com
Yale Leonard Learning Lab - Philadelphia RA Ad
Title: Philadelphia-Area-Based Research Assistant Position in the Yale Learning Lab The Leonard Learning Lab (PI: Dr. Julia Leonard) at Yale University has an opening for a research assistant to help...
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Bella Fascendini @bellafascendini.bsky.social · 07/11/2025
Congrats, Rachit!! Super well deserved! 🥳
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Kristina Olson @olsonista.bsky.social · 31/10/2025
Are you a US-based PhD student WITHOUT summer funding who is interested in adolescent development, trans youth, and/or gender? Reach out to me about applying to join my lab in Summer 2026 for the VIPS program! psych.princeton.edu/diversity/vi...
psych.princeton.edu
Visiting Internship for Ph.D. Students (VIPS) Program
The VIPS program is an initiative of the DEI committee of the Department of Psychology at Princeton University. VIPS will support up to 4 Ph.D. students who are full-time students at other universitie...
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Bella Fascendini @bellafascendini.bsky.social · 22/10/2025
Super cool work, Anjie!
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Bella Fascendini @bellafascendini.bsky.social · 06/10/2025
open access link here: rdcu.be/eJGeC
rdcu.be
‘Motivation reconsidered’ reconsidered
Nature Reviews Psychology - ‘Motivation reconsidered’ reconsidered
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Bella Fascendini @bellafascendini.bsky.social · 06/10/2025
Honored to contribute a Journal Club piece to @natrevpsychol.nature.com! I explore Robert White's seminal "competence motivation" framework (1959) and why it remains relevant over 60 years later—from why toddlers insist on doing things themselves to designing intrinsically motivated AI. 🤖
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Bella Fascendini @bellafascendini.bsky.social · 06/10/2025
open access link here: rdcu.be/eJGeC
rdcu.be
‘Motivation reconsidered’ reconsidered
Nature Reviews Psychology - ‘Motivation reconsidered’ reconsidered
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Rachit Dubey @rachitdubey.bsky.social · 03/09/2025
My lab at UCLA is hiring 1-2 PhD students this cycle! Join us to work at the intersection of cognitive science and AI applied to pressing societal challenges like climate change. More info about me: rachit-dubey.github.io My lab: ucla-cocopol.github.io Please help repost/spread the word!
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Bella Fascendini @bellafascendini.bsky.social · 17/08/2025
One of the most brilliant scientists in CogSci + one of the best institutions to study CogSci. 💫 Apply!!
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Bella Fascendini @bellafascendini.bsky.social · 01/08/2025
Excited to present at @CogSci2025 tomorrow at 1pm in Salon 6! Looking forward to presenting alongside incredible cognitive scientists @cvales.bsky.social, @elainewang.bsky.social, and @junyi.bsky.social ✨
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Bella Fascendini @bellafascendini.bsky.social · 30/07/2025
Come check out my lab mate Ham Huang’s cool work and cape! 😎
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Bella Fascendini @bellafascendini.bsky.social · 29/07/2025
Come say hi! 👋
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Bella Fascendini @bellafascendini.bsky.social · 18/07/2025
Congrats, @emiecz.bsky.social !! Super, super cool work! 🍞
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Bella Fascendini @bellafascendini.bsky.social · 12/07/2025
Congrats Ham!👏
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Bella Fascendini @bellafascendini.bsky.social · 16/06/2025
So exited to work with such a fun bunch this summer! 🙌 Welcome to the lab! 🥳
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Melissa Kline Struhl @mekline.bsky.social · 29/05/2025
After a few days to fix some bugs, we will be holding another online Psych-DS tutorial on Wednesday, June 4, 12pm EDT. This is an informal workshop designed to help you convert a dataset to Psych-DS - BYO or find an open dataset at osf.io/mbvk4. Sign up here: docs.google.com/forms/d/e/1F...
docs.google.com
Psych-DS Workshop signups!
Psych-DS is an open source data standard for representing datasets in the social/behavioral sciences. It is designed for use by individual researchers who are collecting data, preparing datasets for a...
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