Morteza Dehghani

@mdehghani.bsky.social

Professor of Psychology and Computer Science at USC

The Islamic regime has killed 12k people in 5 days. Iranians are hurting; we’ve been hurting for 150 years. If you have an Iranian colleague, check on them. No unsolicited advice—just kindness and space. They may kill our brothers and sisters, but never the dream of freedom.

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My earliest memory: pedaling my bike at age 5 to warn my parents about the Basijis. At 6, I heard my mother’s screams as she was arrested for nail polish. I tell my kids the story of Zahhak—the tyrant who fed on youth until he was overthrown. The Zahhak of our time is falling 🕊️ #IranRevolution2026

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How do resource fears (realistic threat) vs. value clashes (symbolic threat) drive war & peace? We built a virtual society of 25 autonomous agents using the Park et al. (2023) framework to find out, using a "minimal groups" paradigm (Group A vs. B). But first, we looked under the hood. 🧠

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New paper with @nathanieldaw.bsky.social in Nature Communications: an RL model that builds a successor map compositionally. The new model plans as well as the best models, and it links components of the map used for planning to neural codes in the medial entorhinal cortex. rdcu.be/eAofi

Reconciling flexibility and efficiency: medial entorhinal cortex represents a compositional cognitive map

Nature Communications - How the brain creates compositional cognitive maps that support both flexible and efficient planning remains poorly understood. Here, authors propose a...

rdcu.be

Our new study in Psych Science @psychscience.bsky.social reveals many interesting-- and concerning -- things about the language on kids' shows, including a grammatical bias in favor of men and boys as agents or "doers" 👇

Andrea Vial@avial.bsky.social · last yr.

🔥Excited to share our new paper in PsychScience! Shout out to best-ever collaborators Aida Davani, @ruyuan-zuo.bsky.social, @shreyahavaldar.bsky.social, Eleanor Chestnut, @mdehghani.bsky.social & @andreicimpian.bsky.social 🧵1/8… doi.org/10.1177/0956...

We’re looking for a researcher to work on methods and building tools for AI evaluation. We are seeking candidates with expertise at the intersection of agentic systems and personalization, demonstrated by a strong publication record in relevant venues.

BREAKING: Yuval Abraham, co-director of Oscar-winning documentary "No Other Land," says Israeli settlers beat his co-director Hamdan Ballal, injuring his head and stomach — and then Israeli soldiers invaded the ambulance he was in and seized him. Ballal's whereabouts are now unknown.

Tweet from Yuval Abraham:
"A group of settlers just lynched Hamdan Ballal, co director of our film no other land. They beat him and he has injuries in his head and stomach, bleeding. Soldiers invaded the ambulance he called, and took him. No sign of him since."

New research led by @zhpinkman.bsky.social investigating the impact of LLMs on the reduction of linguistic diversity and its societal implications. "We're getting the language into its final shape - the shape it's going to have when nobody speaks anything else." George Orwell, 1984

@zhpinkman.bsky.social · last yr.

How do LLMs shape writing? Our research shows they make language more uniform, reducing diversity and altering how personal traits appear in text. These shifts have big implications for identity, culture, and fairness. #LLMs #NLProc arxiv.org/abs/2502.11266

Trajan's (@starlord37.bsky.social) story & countless others like it in the face of these cuts and wild shifts in government fellowships intended for our brightest & most promising students will have long-term, deeply damaging effects on the U.S.'s competitiveness in science, math, CS and more.

Trajan Hammonds@starlord37.bsky.social · last yr.

Last night I found out that the NSF math postdoctoral fellowship I applied for is being deleted because it does not comply with Trump’s executive orders on DEI in the federal government. I’m going to answer some FAQs and share some thoughts about this ordeal in this thread 1/n

I’m thankful for the ceasefire deal and hopeful it will be implemented. The hostages should be returned, the killing and suffering ended. The nature of the deal shows the truth to what many of us said all along. The war on Gaza was a horrific crime and a strategic disaster for Israel.

A dear friend of mine needs our help. Elena lost her car and all of her training equipment in the devastating LA fires. Her family is in Ukraine, and she has almost no social support. Please consider donating to her GoFundMe campaign to help her get back on her feet. gofund.me/5a877476

Donate to Help Elena Recover After The Palisades Fire Loss, organized by Elena Van Dyke

My name is Elena, and I’m a personal trainer in Los Angeles. I work re… Elena Van Dyke needs your support for Help Elena Recover After The Palisades Fire Loss

gofund.me