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yangxu.bsky.social
PhD student @hein-lab.bsky.social @uniwuerzburg.bsky.social, Learning & Decision making, fMRI, modeling, delay discounting, effort, empathy, intrinsic reward
17 posts 450 followers 684 following
Prolific Poster

Grateful for the chance to share my thoughts on responsible use of LLMs in psychology research @spspnews.bsky.social #spsp2025. Here's a summary of my presentation for those who missed it. Thanks to @ashwinia.bsky.social for organizing this panel! How should LLMs be used in psychology research? 🧡

New paper led by the unstoppable @qingtianmi.bsky.social. We study how people learn a task that involves combining multiple sources of information. We work out which curricula work best, build a model, and use it to successfully discover new curricula. enjoy! osf.io/preprints/ps...

Out today in Nature Machine Intelligence! From childhood on, people can create novel, playful, and creative goals. Models have yet to capture this ability. We propose a new way to represent goals and report a model that can generate human-like goals in a playful setting... 1/N

Our newest chapter, β€œBreaking the tug-of-war,” reviews the lab’s latest NIH and NSF-funded research that has changed the way we think about decision-making (and we hope how you do also):Β osf.io/preprints/ps... Led by @jasonleng.bsky.social alongΒ with @sheensu.bsky.social and Romy Froemer.

New paper alert! Have you ever looked at single-trial fMRI activation maps? If so, you know that they are super variable. Here we show that the variability is not just noise. In fact, the same task can consistently elicit different activation patterns. www.nature.com/articles/s41...

Please spread this!

First preprint from our lab! An @jerlich.bsky.social collaboration We developed novel frameworks to study multi-agent decisions in mice. Mice flexibly shift their decision preference under social competition, by integrating real-time self and opponent information! www.biorxiv.org/content/10.1...

πŸŽ‰ I'm excited to share that 2 of our papers got accepted to #RLDM2025! πŸ“„ NORMARL: A multi-agent RL framework for adaptive social norms & sustainability. πŸ“„ Selective Attention: When attention helps vs. hinders learning under uncertainty. Grateful to my amazing co-authors! *-*

Excited to share a new paper with Daphna Shohamy & @nathanieldaw.bsky.social! Using fmri reactivation, we measured *when* people build preferences from memory. We found that people tend to do so before a choice, but that they also wait until choice time when options are linked to multiple memories

πŸ₯³thrilled that our dockerHDDM tutorial paper, after many years's work was published in my dream journal AMPPS of @psychscience.bsky.social 🀩 πŸ‘‡ doi.org/10.1177/2515.... The image's been downloaded 10K+⏬ docker Hub Such a pleasure to work w/ Wanke, Ru Yuan, Haiyang & member of HDDM/HSSM team!

In our new @commspsychol.bsky.social review, we explore how humans adjust learning to different types of uncertainty, why biases arise, and what this reveals about learning and psychiatric conditions. πŸ“– Read more: nature.com/articles/s44... With Matt Nassar & @haukeren.bsky.social

Sydney's post goes on as a thread with an excellent summary of this work, and a link to the portal for submitting commentaries at BBS. Working on this with Sydney, Josh, and Nick was enormously productive in my own thinking about the structure and function of morality!

πŽππ„π 𝐂𝐀𝐋𝐋 until 15th of February πŸ§ πŸ™Œ #opencall #artandscience #art #science #artscienceresidency #neuroscience

Using computational modelling & behavioral studies in people with hippocampal damage, @leemtllab.bsky.social &co show that the #hippocampus is critical for the evidence accumulation processes that support approach-avoidance conflict #DecisionMaking πŸ§ͺ @plosbiology.org plos.io/4hxxJwf

In game theory, we often assume that people only interact in one game at a time. In a new paper, we explore theoretically and experimentally how people cooperate when they engage in two games concurrently, either with the same partner or with different partners, www.nature.com/articles/s41...

one of the most intriguing projects i've been involved in: automated scientific discovery in an area (human/animal RL) I've been working on forever. can an LLM do the job of my grad students? if it is backed up by super smart scientists incl @pcastr.bsky.social @neurokim.bsky.social & kevin miller

🚨 Finally out! My new @annualreviews.bsky.social in Psychology paper: www.annualreviews.org/content/jour... We unpack why psych theories of generalization keep cycling from rigid rule-based models to flexible similarity-based ones, then culminating in Bayesian hybrids. Let's break it down πŸ‘‰ 🧡

announcing this year's neuroeconomics summer school, this time outside paris. too many great lecturers to list, even too many great organizers (plassmann,glimcher,tymula,kable,me). & you wouldnt believe all the past students and where they are now. sign up: www.insead.edu/events/neuro...

Our Barcelona-based summer school, BAMB! (bambschool.org) just opened applications! Come join us: 15-24th July, to learn how to model behavioral data using RL, Bayesian, latent variable models, RNNs, DDMs & more! #BAMB2025

Excited to share our new work in @naturecomms.bsky.social . Introducing a "comprehensive exploration" model that uncovers all mechanisms of visual working memory in one framework, built from a single large-scale controlled experiment. doi.org/10.1038/s414...

I'm hiring a lab manager to start this summer/fall, to work on transformative experience, identity change, and empathy in the digital age. Details here: www.crockettlab.org/research-spe... Please share!

🌡Out now! Using an RL task that manipulates people's beliefs about agency, we show that exposure to & severity of early-life adversity is associated with lower learning rates & agency beliefs. w/ the brillant @thephelpslab.bsky.social, Kate McLaughlin, & Bryan Dong learnmem.cshlp.org/content/32/1...

[🚨 PhD studentship available] Exciting PhD project with University of Birmingham* (myself & Caroline Moraes) and James Hutton Institute (Tony Craig), on understanding pro-environmental decision making! Fully funded by CENTRE-UB / ESRC, open to all . To apply (by Mar 5th) πŸ‘‡ shorturl.at/UYlon

1/19 I’m thrilled that my postdoctoral work, with John Widloski and David Foster is now out in @science.org, along with a wonderful preview by Daniel Bendor!

Abstract submissions and registration are now possible πŸ‘‰ www.pug2025.org Submission deadline for symposia is February 28, 2025 (notification of acceptance by March 14, 2025) and for posters March 31, 2025 We look forward to many exciting contributions!

🚨 Applications for the 22nd Summer Institute on Bounded Rationality are now open! 🌐 Join us in Berlin @mpib-berlin.bsky.social from June 17–25, 2025 to explore "Decision Making in a Digital World". ✏️ Application deadline is March 9 - more info at πŸ‘‡!! www.mpib-berlin.mpg.de/research/res...

What people learn from punishment: a cognitive model: http://osf.io/he5c8_v1/

Testing yields better memory than studying. The origin of this effect is unclear. Based on three experiments and computational modeling, this study provides evidence that predictive (error-based) learning underpins the testing effect. www.nature.com/articles/s44...

🏰 PhD position on computational modelling | collective dynamics | cultural evolution 🏰 Get in touch with any questions you might have and join me in beautiful Marburg! stellenangebote.uni-marburg.de/jobposting/c... (Deutsch) stellenangebote.uni-marburg.de/jobposting/3... (English)

Excited to have our new paper out in @cpsyjournal.bsky.social πŸŽ‰βœ¨ with my amazing co-authors @christopherjwhyte.bsky.social @hohwy.bsky.social We develop an active inference model of the optimism bias to model development, belief updating and optimistic action. cpsyjournal.org/articles/10....

The Predictive Coding Account of Psychosis www.biologicalpsychiatryjournal.com/article/S000...

@noehamou.bsky.social and @gautamreddy.bsky.social (with a little bit of help from me) have written a really interesting theoretical paper on associative learning (in particular Pavlovian conditioning): www.biorxiv.org/content/10.1...

A speculative take on the DeepSeek fiasco: Chinese firms, under resource constraints, will be more likely to build architectures and algorithms closer to what the brain implements (i.e., highly energy and data efficient learning/computation).

Our symposium on structure knowledge biases in psychopathology was accepted at #CPConf2025! with @mattnour.bsky.social @mgarvert.bsky.social @carocharp.bsky.social Talks will span social learning, inductive inference in planning, language representation & map-based generalization. Can't wait!

We are currently building the largest, cross-domain data set of human behavior as part of an open collaborative project. Contributions of any form are welcome, but especially experiments with meta-data from developmental, cross-cultural, or clinical studies. More details: github.com/marcelbinz/P...

Lucky that I had a long struggling and upset time learning and writing codes before this AI-assisting period. It's still hard for me to write code from scratch, but with a mind of breaking my goal into subtasks, thanks to the suck times, I can easily prompt these AI tools and get my codes.

Looking forward to the Python version

New lab paper out now in JEP:G! From Juliana Trach, @mdebettencourt.bsky.social , @angelaradulescu.bsky.social , and myself. "Rewards Transiently and Automatically Enhance Sustained Attention." t.co/r72fZRn3Nh πŸ‘‡

Epistemic biases in human reinforcement learning: behavioral evidence, computational characterization, normative status and possible applications. A quite self-centered review, but with a broad introduction and conclusions and very cool figures. Few main takes will follow osf.io/preprints/ps...

An absolute MUST READ for anyone doing task-related connectivity analyses w fMRI data. So many good things in here! 🧡 www.nature.com/articles/s42...

Check out our new #preprint on Critical Intelligence: a review on how the brain (might) generate rapid complex decisions under threat. 🧠 With Jules Brochard & Peter Dayan. doi.org/10.31234/osf... #Neuroscience #criticalintelligence #decisionmaking

Brains minimize energy consumption while maximizing computation. In humans, this trade-off is reconciled towards complex behaviors & hence relatively high energy use Review & synthesis with @sharnajamadar.bsky.social @annabhlr.bsky.social & Hamish Deery tinyurl.com/47c9n65w osf.io/preprints/os...

✨ New updated tutorial on generalized Bayesian filtering for the exponential family using predictive coding neural networks with PyHGF! Learn more here: computationalpsychiatry.github.io/pyhgf/notebo... #Python #JAX #Rust #Bayesian #neuroAI

Modelling the impact of environmental and social determinants on mental health using generative agents www.nature.com/articles/s41...

New paper out in @pnas.org today with lovely colleagues including Hailey Trier, Nima Khalighinejad, @caro-harbison.bsky.social, @marklaubach.bsky.social, Jacquie Scholl & Matthew Rushworth (most not on BlueSky yet!) 

www.pnas.org/doi/epub/10....

As I used MID task in my first two projects, I love this work so much!