Björn Lindström
@bjornlindstrom.bsky.social
Researching (social) learning and cultural evolution at Karolinska Institute, Sweden
Pinned
Through experiments and simulations, this study shows how individuals learn to learn from others, dynamically shaping the processes involved in cultural evolution. @davidschultner.bsky.social @bjornlindstrom.bsky.social
@lucasmolleman.bsky.social
www.nature.com/articles/s41...
@lucasmolleman.bsky.social
www.nature.com/articles/s41...
Feature-based reward learning shapes human social learning strategies - Nature Human Behaviour
This research advances a mechanistic reward learning account of social learning strategies. Through experiments and simulations, it shows how individuals learn to learn from others, dynamically shapin...
www.nature.com
Thrilled that our paper on the mechanisms underlying social learning strategies is out! First big paper from my @erc.europa.eu & @kawresearch.bsky.social funded group. More to come! I'm currently looking to recruit two post docs, get in touch if you find this line of research interesting.
Reposted by Björn Lindström
Can humans & animals really use internal maps to take shortcuts?
Tolman famously said yes - based largely on his Sunburst maze.
Our new review & meta-analysis suggests evidence is far weaker than you might think.
🧵👇 doi.org/10.1111/ejn....
@uofgpsychneuro.bsky.social @ejneuroscience.bsky.social
Tolman famously said yes - based largely on his Sunburst maze.
Our new review & meta-analysis suggests evidence is far weaker than you might think.
🧵👇 doi.org/10.1111/ejn....
@uofgpsychneuro.bsky.social @ejneuroscience.bsky.social
Tolman's Sunburst Maze 80 Years on: A Meta‐Analysis Reveals Poor Replicability and Little Evidence for Shortcutting
In 1946, Tolman et al. reported that rats could take a novel shortcut to a goal after training on an indirect route, supporting the Cognitive Map theory. However, a review of subsequent Sunburst maze...
doi.org
January 5, 2026 at 7:52 PM
Can humans & animals really use internal maps to take shortcuts?
Tolman famously said yes - based largely on his Sunburst maze.
Our new review & meta-analysis suggests evidence is far weaker than you might think.
🧵👇 doi.org/10.1111/ejn....
@uofgpsychneuro.bsky.social @ejneuroscience.bsky.social
Tolman famously said yes - based largely on his Sunburst maze.
Our new review & meta-analysis suggests evidence is far weaker than you might think.
🧵👇 doi.org/10.1111/ejn....
@uofgpsychneuro.bsky.social @ejneuroscience.bsky.social
Reposted by Björn Lindström
On a more positive note, this NN is worth a read. It takes a similar approach to Ashwood, Calhoun etc to explore diff behavioral states using HMM, but here using a hierarchical Dirichlet process to infer number of states www.nature.com/articles/s41...
Infinite hidden Markov models can dissect the complexities of learning - Nature Neuroscience
Bruijns et al. present a modeling tool that enables the tracking of learning dynamics across subjects to reveal how behaviors emerge and adapt. Applying the tool to a decision-making task in mice unco...
www.nature.com
January 5, 2026 at 3:42 PM
On a more positive note, this NN is worth a read. It takes a similar approach to Ashwood, Calhoun etc to explore diff behavioral states using HMM, but here using a hierarchical Dirichlet process to infer number of states www.nature.com/articles/s41...
Reposted by Björn Lindström
My co-authors and I are happy to present our framework "Collective Intelligence as Collective Information Processing (CIP)."
Here we propose decomposing different information processing mechanisms to unify disparate phenomena traditionally classified as "collective intelligence."
Here we propose decomposing different information processing mechanisms to unify disparate phenomena traditionally classified as "collective intelligence."
December 30, 2025 at 6:35 PM
My co-authors and I are happy to present our framework "Collective Intelligence as Collective Information Processing (CIP)."
Here we propose decomposing different information processing mechanisms to unify disparate phenomena traditionally classified as "collective intelligence."
Here we propose decomposing different information processing mechanisms to unify disparate phenomena traditionally classified as "collective intelligence."
Reposted by Björn Lindström
🚨 New Paper Alert 🚨 "Understanding & Predicting Cultural Change" is accepted at Advances in Experimental Social Psychology!
Varnum & I argue that Psychology cannot afford to be blind to time. We need to move from cross-sectional snapshots to dynamic time-series movies. 🧵👇
Varnum & I argue that Psychology cannot afford to be blind to time. We need to move from cross-sectional snapshots to dynamic time-series movies. 🧵👇
December 29, 2025 at 4:21 PM
🚨 New Paper Alert 🚨 "Understanding & Predicting Cultural Change" is accepted at Advances in Experimental Social Psychology!
Varnum & I argue that Psychology cannot afford to be blind to time. We need to move from cross-sectional snapshots to dynamic time-series movies. 🧵👇
Varnum & I argue that Psychology cannot afford to be blind to time. We need to move from cross-sectional snapshots to dynamic time-series movies. 🧵👇
Reposted by Björn Lindström
All I want for Christmas is for Sweden to revive its spooky Christmas goat tradition.
December 24, 2025 at 9:17 AM
All I want for Christmas is for Sweden to revive its spooky Christmas goat tradition.
Reposted by Björn Lindström
December 17, 2025 at 7:57 AM
Reposted by Björn Lindström
"misinformation is widespread in biological systems spanning levels of organization, and [...] is probably an inevitable property that inherits from fundamental constraints on biological communication systems, rather than a pathology"
royalsocietypublishing.org/rsif/article...
royalsocietypublishing.org/rsif/article...
A brief natural history of misinformation
Abstract. The idea that organisms benefit by acquiring information through social connections is a cornerstone of our understanding of social evolution and
royalsocietypublishing.org
December 14, 2025 at 6:36 AM
"misinformation is widespread in biological systems spanning levels of organization, and [...] is probably an inevitable property that inherits from fundamental constraints on biological communication systems, rather than a pathology"
royalsocietypublishing.org/rsif/article...
royalsocietypublishing.org/rsif/article...
Reposted by Björn Lindström
New paper out in Phil Trans with Angel Jimenez, Keith Jensen and Lei Chang
From information free-riding to information sharing: how have humans solved the cooperative dilemma at the heart of cumulative cultural evolution?
royalsocietypublishing.org/rstb/article...
From information free-riding to information sharing: how have humans solved the cooperative dilemma at the heart of cumulative cultural evolution?
royalsocietypublishing.org/rstb/article...
From information free-riding to information sharing: how have humans solved the cooperative dilemma at the heart of cumulative cultural evolution?
Abstract. Cumulative cultural evolution, where populations accumulate ever-improving knowledge, technologies and social customs, is arguably a unique featu
royalsocietypublishing.org
December 4, 2025 at 10:23 AM
New paper out in Phil Trans with Angel Jimenez, Keith Jensen and Lei Chang
From information free-riding to information sharing: how have humans solved the cooperative dilemma at the heart of cumulative cultural evolution?
royalsocietypublishing.org/rstb/article...
From information free-riding to information sharing: how have humans solved the cooperative dilemma at the heart of cumulative cultural evolution?
royalsocietypublishing.org/rstb/article...
Reposted by Björn Lindström
Very grateful that our paper was awarded ISCON’s Best 2024 Paper in Social Cognition!! Huge thanks to the fantastic team: Ben Stillerman, @bjornlindstrom.bsky.social , @leorhackel.bsky.social , Damaris Hagen, Nils Jostmann, and @davidamodio.bsky.social 🎊💐
ISCON is pleased to announce the winner of best 2024 paper in social cognition award, which is:
www.pnas.org/doi/10.1073/...
Paper was led by @davidschultner.bsky.social, w Ben Stillerman, Bjorn Lindstrom, @leorhackel.bsky.social, Damaris Hagen, Nils Jostmann, and @davidamodio.bsky.social
1/4
www.pnas.org/doi/10.1073/...
Paper was led by @davidschultner.bsky.social, w Ben Stillerman, Bjorn Lindstrom, @leorhackel.bsky.social, Damaris Hagen, Nils Jostmann, and @davidamodio.bsky.social
1/4
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
www.pnas.org
December 2, 2025 at 10:20 PM
Very grateful that our paper was awarded ISCON’s Best 2024 Paper in Social Cognition!! Huge thanks to the fantastic team: Ben Stillerman, @bjornlindstrom.bsky.social , @leorhackel.bsky.social , Damaris Hagen, Nils Jostmann, and @davidamodio.bsky.social 🎊💐
Reposted by Björn Lindström
🚨Two postdoc positions @tse-fr.eu @iast.fr 🚨
We are recruiting two postdocs as part of the ANR-funded project ENFORCE.
Join me, @giuliandr.bsky.social, & @zhgarfield.com, to study punitive systems across societies.
Full time, 2 years, no teaching.
Deadline: Jan 23
www.tse-fr.eu/groups/depar...
We are recruiting two postdocs as part of the ANR-funded project ENFORCE.
Join me, @giuliandr.bsky.social, & @zhgarfield.com, to study punitive systems across societies.
Full time, 2 years, no teaching.
Deadline: Jan 23
www.tse-fr.eu/groups/depar...
Department of Social and Behavioral Sciences
www.tse-fr.eu
December 1, 2025 at 12:37 PM
🚨Two postdoc positions @tse-fr.eu @iast.fr 🚨
We are recruiting two postdocs as part of the ANR-funded project ENFORCE.
Join me, @giuliandr.bsky.social, & @zhgarfield.com, to study punitive systems across societies.
Full time, 2 years, no teaching.
Deadline: Jan 23
www.tse-fr.eu/groups/depar...
We are recruiting two postdocs as part of the ANR-funded project ENFORCE.
Join me, @giuliandr.bsky.social, & @zhgarfield.com, to study punitive systems across societies.
Full time, 2 years, no teaching.
Deadline: Jan 23
www.tse-fr.eu/groups/depar...
Reposted by Björn Lindström
📣 Very happy to announce a new BBS target article with Nick Chater in which we propose a new theory of cultural evolution, highlighting the importance of bottom-up social interaction in explaining the emergence of cultural complexity
🧵 1/8
www.cambridge.org/core/journal...
🧵 1/8
www.cambridge.org/core/journal...
Social Tinkering: The Social Foundations of Cultural Complexity | Behavioral and Brain Sciences | Cambridge Core
Social Tinkering: The Social Foundations of Cultural Complexity
www.cambridge.org
November 28, 2025 at 3:36 PM
📣 Very happy to announce a new BBS target article with Nick Chater in which we propose a new theory of cultural evolution, highlighting the importance of bottom-up social interaction in explaining the emergence of cultural complexity
🧵 1/8
www.cambridge.org/core/journal...
🧵 1/8
www.cambridge.org/core/journal...
Reposted by Björn Lindström
My paper is out!
Computational modeling of error patterns during reward-based learning show evidence that habit learning (value free!) supplements working memory in 7 human data sets.
rdcu.be/eQjLN
Computational modeling of error patterns during reward-based learning show evidence that habit learning (value free!) supplements working memory in 7 human data sets.
rdcu.be/eQjLN
A habit and working memory model as an alternative account of human reward-based learning
Nature Human Behaviour - In this study, Collins proposes an alternative dual-process (working memory and habit) model of reinforcement learning in humans.
rdcu.be
November 17, 2025 at 5:18 PM
My paper is out!
Computational modeling of error patterns during reward-based learning show evidence that habit learning (value free!) supplements working memory in 7 human data sets.
rdcu.be/eQjLN
Computational modeling of error patterns during reward-based learning show evidence that habit learning (value free!) supplements working memory in 7 human data sets.
rdcu.be/eQjLN
Reposted by Björn Lindström
Come and do a PhD at Exeter with me and Chico Camargo (Computer Science) on human-genAI coevolution
"Leveraging Natural Language Processing for Data-Driven Agent-Based Modelling of Online Cultural Dynamics"
www.exeter.ac.uk/v8media/recr...
More details here:
www.exeter.ac.uk/study/fundin...
"Leveraging Natural Language Processing for Data-Driven Agent-Based Modelling of Online Cultural Dynamics"
www.exeter.ac.uk/v8media/recr...
More details here:
www.exeter.ac.uk/study/fundin...
www.exeter.ac.uk
November 14, 2025 at 3:14 PM
Come and do a PhD at Exeter with me and Chico Camargo (Computer Science) on human-genAI coevolution
"Leveraging Natural Language Processing for Data-Driven Agent-Based Modelling of Online Cultural Dynamics"
www.exeter.ac.uk/v8media/recr...
More details here:
www.exeter.ac.uk/study/fundin...
"Leveraging Natural Language Processing for Data-Driven Agent-Based Modelling of Online Cultural Dynamics"
www.exeter.ac.uk/v8media/recr...
More details here:
www.exeter.ac.uk/study/fundin...
Reposted by Björn Lindström
For this reason, we wrote this comment, published yesterday. royalsocietypublishing.org/doi/10.1098/...
We reason that 1) their data supports rather than rejects the sequence hypothesis, as monkeys and chimps did not perform with any precision in these sequential tasks. 7/n
We reason that 1) their data supports rather than rejects the sequence hypothesis, as monkeys and chimps did not perform with any precision in these sequential tasks. 7/n
November 13, 2025 at 7:48 AM
For this reason, we wrote this comment, published yesterday. royalsocietypublishing.org/doi/10.1098/...
We reason that 1) their data supports rather than rejects the sequence hypothesis, as monkeys and chimps did not perform with any precision in these sequential tasks. 7/n
We reason that 1) their data supports rather than rejects the sequence hypothesis, as monkeys and chimps did not perform with any precision in these sequential tasks. 7/n
Reposted by Björn Lindström
Join us for this talk by @janhaaker.bsky.social on "A functional view on how we respond to others’ pain: Empathy, threat learning and neuropeptides"
11 November, 1pm CET
tu-dresden.de/mn/psycholog...
11 November, 1pm CET
tu-dresden.de/mn/psycholog...
November 10, 2025 at 9:11 PM
Join us for this talk by @janhaaker.bsky.social on "A functional view on how we respond to others’ pain: Empathy, threat learning and neuropeptides"
11 November, 1pm CET
tu-dresden.de/mn/psycholog...
11 November, 1pm CET
tu-dresden.de/mn/psycholog...
Reposted by Björn Lindström
Just 1 week to apply! 4 year @erc.europa.eu funded PhD position working in an interdisciplinary team to study #culturalEvolution as a process of reuse, recombination, and creative re-engineering of past solutions. Details 👉 hmc-lab.com/ERCPhDCultur... 🙏Please share!
November 5, 2025 at 10:24 AM
Just 1 week to apply! 4 year @erc.europa.eu funded PhD position working in an interdisciplinary team to study #culturalEvolution as a process of reuse, recombination, and creative re-engineering of past solutions. Details 👉 hmc-lab.com/ERCPhDCultur... 🙏Please share!
Reposted by Björn Lindström
🚨 New preprint 🚨
Are reinforcement learning models complete accounts of decisions from experience if they ignore explicit memory?
In this new preprint, we show that people indeed form robust explicit memory representations that flexibly guide later decisions.
🔗 Preprint: doi.org/10.1101/2025...
Are reinforcement learning models complete accounts of decisions from experience if they ignore explicit memory?
In this new preprint, we show that people indeed form robust explicit memory representations that flexibly guide later decisions.
🔗 Preprint: doi.org/10.1101/2025...
October 29, 2025 at 8:24 AM
🚨 New preprint 🚨
Are reinforcement learning models complete accounts of decisions from experience if they ignore explicit memory?
In this new preprint, we show that people indeed form robust explicit memory representations that flexibly guide later decisions.
🔗 Preprint: doi.org/10.1101/2025...
Are reinforcement learning models complete accounts of decisions from experience if they ignore explicit memory?
In this new preprint, we show that people indeed form robust explicit memory representations that flexibly guide later decisions.
🔗 Preprint: doi.org/10.1101/2025...
Reposted by Björn Lindström
Re-posting this because I really like it and I think we need to understand identity from a functionalist perspective more than ever.
osf.io/preprints/ps...
osf.io/preprints/ps...
I wrote a chapter on a functionalist account of social identity.
IMO, thinking about identity in an instrumental way helps explain a lot of behavior that seems otherwise baffling.
osf.io/preprints/ps...
IMO, thinking about identity in an instrumental way helps explain a lot of behavior that seems otherwise baffling.
osf.io/preprints/ps...
October 27, 2025 at 8:11 PM
Re-posting this because I really like it and I think we need to understand identity from a functionalist perspective more than ever.
osf.io/preprints/ps...
osf.io/preprints/ps...
Reposted by Björn Lindström
I'm excited to finally have a preprint of this paper up, a few years in the making.
In it we argue that industry-driven manipulation of social media research is well underway and that norms and institutions in the field are ill-prepared to resist tech's influence.
arxiv.org/abs/2510.19894
In it we argue that industry-driven manipulation of social media research is well underway and that norms and institutions in the field are ill-prepared to resist tech's influence.
arxiv.org/abs/2510.19894
October 24, 2025 at 12:12 AM
I'm excited to finally have a preprint of this paper up, a few years in the making.
In it we argue that industry-driven manipulation of social media research is well underway and that norms and institutions in the field are ill-prepared to resist tech's influence.
arxiv.org/abs/2510.19894
In it we argue that industry-driven manipulation of social media research is well underway and that norms and institutions in the field are ill-prepared to resist tech's influence.
arxiv.org/abs/2510.19894
Reposted by Björn Lindström
Fully-funded 4-year #PhD in Cultural Evolution! Join my @erc.europa.eu project exploring how compression & compositionality drive cultural innovation: hmc-lab.com/ERCPhDCultur...
Apply by Nov 12!
Maybe of interest to folks from #COSMOS2025 or @eslr.bsky.social? Please feel free to share! 🙏
Apply by Nov 12!
Maybe of interest to folks from #COSMOS2025 or @eslr.bsky.social? Please feel free to share! 🙏
ERC funded PhD position on Cultural Evolution
ERC funded PhD position on Cultural Evolution
posted on October 16, 2025
We are currently seeking a highly motivated individual for a ful...
hmc-lab.com
October 20, 2025 at 9:32 AM
Fully-funded 4-year #PhD in Cultural Evolution! Join my @erc.europa.eu project exploring how compression & compositionality drive cultural innovation: hmc-lab.com/ERCPhDCultur...
Apply by Nov 12!
Maybe of interest to folks from #COSMOS2025 or @eslr.bsky.social? Please feel free to share! 🙏
Apply by Nov 12!
Maybe of interest to folks from #COSMOS2025 or @eslr.bsky.social? Please feel free to share! 🙏
Reposted by Björn Lindström
Very thought-provoking post by @prakhargodara.bsky.social. Is confirmation bias/positivity bias a statistical "ghost" of model specification? Specifically not including temporally decaying learning rates? The evidence suggests this is not the case and here is why (1/n)
Is confirmation bias a real cognitive flaw, or a statistical ghost created by our models? My new PNAS paper shows a startling result: fitting Q-learning models to behavior in bandit tasks detect a bias, even from the behavior of a perfectly rational Bayesian learner.
October 19, 2025 at 8:22 AM
Very thought-provoking post by @prakhargodara.bsky.social. Is confirmation bias/positivity bias a statistical "ghost" of model specification? Specifically not including temporally decaying learning rates? The evidence suggests this is not the case and here is why (1/n)
How do humans keep inventing tools and technologies that no single person could create alone?
Our new preprint, led by
@anilyaman.bsky.social & @ts-brain.bsky.social
shows that semantic knowledge guides innovation and drives cultural evolution. 🧠📘 arxiv.org/abs/2510.12837
Our new preprint, led by
@anilyaman.bsky.social & @ts-brain.bsky.social
shows that semantic knowledge guides innovation and drives cultural evolution. 🧠📘 arxiv.org/abs/2510.12837
October 16, 2025 at 1:49 PM
How do humans keep inventing tools and technologies that no single person could create alone?
Our new preprint, led by
@anilyaman.bsky.social & @ts-brain.bsky.social
shows that semantic knowledge guides innovation and drives cultural evolution. 🧠📘 arxiv.org/abs/2510.12837
Our new preprint, led by
@anilyaman.bsky.social & @ts-brain.bsky.social
shows that semantic knowledge guides innovation and drives cultural evolution. 🧠📘 arxiv.org/abs/2510.12837
Reposted by Björn Lindström
Which processes underlie collective intelligence in naturalistic human groups?
In new work led by Valerii Chirkov, we show that payoff selectivity is key in transforming a group of individuals into an intelligent collective 🤝🧠
www.youtube.com/watch?v=xY7n...
Preprint: osf.io/preprints/ps...
In new work led by Valerii Chirkov, we show that payoff selectivity is key in transforming a group of individuals into an intelligent collective 🤝🧠
www.youtube.com/watch?v=xY7n...
Preprint: osf.io/preprints/ps...
First-Person Perspective of the Voluntary Payoff-Sharing (VP) Condition
YouTube video by Valerii Chirkov
www.youtube.com
October 15, 2025 at 7:26 AM
Which processes underlie collective intelligence in naturalistic human groups?
In new work led by Valerii Chirkov, we show that payoff selectivity is key in transforming a group of individuals into an intelligent collective 🤝🧠
www.youtube.com/watch?v=xY7n...
Preprint: osf.io/preprints/ps...
In new work led by Valerii Chirkov, we show that payoff selectivity is key in transforming a group of individuals into an intelligent collective 🤝🧠
www.youtube.com/watch?v=xY7n...
Preprint: osf.io/preprints/ps...
Reposted by Björn Lindström
"Dunbar's Number" is a zombie that lives forever in the science press it seems. Estimates of Dunbar's Number with 95% intervals, for a range of model specifications (from doi.org/10.1098/rsbl... ):
October 14, 2025 at 5:51 PM
"Dunbar's Number" is a zombie that lives forever in the science press it seems. Estimates of Dunbar's Number with 95% intervals, for a range of model specifications (from doi.org/10.1098/rsbl... ):