Jan Engelmann
@janengelmann.bsky.social
Associate Professor of Psychology at UC Berkeley and Director of the Social Origins Lab: https://socialoriginslab.com/
Pinned
Are humans really the only rational animals? Our NEW PAPER 🎉 out in @science.org suggests otherwise! In a large collaboration led with my joint first author @hanna-schleihauf.bsky.social, we show that “Chimpanzees rationally revise their beliefs” 🧵
Chimpanzees rationally revise their beliefs
The selective revision of beliefs in light of new evidence has been considered one of the hallmarks of human-level rationality. However, tests of this ability in other species are lacking. We examined...
www.science.org
Are humans the only rational animals?
For thousands of years, we’ve thought so.
Our new paper, out today in Science, suggests otherwise!
We present evidence that chimpanzees possess several core capacities for rational thought.
Check out Emily's thread: bsky.app/profile/emil...
For thousands of years, we’ve thought so.
Our new paper, out today in Science, suggests otherwise!
We present evidence that chimpanzees possess several core capacities for rational thought.
Check out Emily's thread: bsky.app/profile/emil...
Reposted by Jan Engelmann
Intrigued by animal innovation and avian cognition? My PI Dr. Megan Lambert is advertising a new shiny PhD position studying innovation in kea parrots! Info attached 🤩🦜
For inquiries: Megan.Lambert@vetmeduni.ac.at
For inquiries: Megan.Lambert@vetmeduni.ac.at
November 11, 2025 at 10:20 AM
Intrigued by animal innovation and avian cognition? My PI Dr. Megan Lambert is advertising a new shiny PhD position studying innovation in kea parrots! Info attached 🤩🦜
For inquiries: Megan.Lambert@vetmeduni.ac.at
For inquiries: Megan.Lambert@vetmeduni.ac.at
Are humans the only rational animals?
For thousands of years, we’ve thought so.
Our new paper, out today in Science, suggests otherwise!
We present evidence that chimpanzees possess several core capacities for rational thought.
Check out Emily's thread: bsky.app/profile/emil...
For thousands of years, we’ve thought so.
Our new paper, out today in Science, suggests otherwise!
We present evidence that chimpanzees possess several core capacities for rational thought.
Check out Emily's thread: bsky.app/profile/emil...
Are humans really the only rational animals? Our NEW PAPER 🎉 out in @science.org suggests otherwise! In a large collaboration led with my joint first author @hanna-schleihauf.bsky.social, we show that “Chimpanzees rationally revise their beliefs” 🧵
Chimpanzees rationally revise their beliefs
The selective revision of beliefs in light of new evidence has been considered one of the hallmarks of human-level rationality. However, tests of this ability in other species are lacking. We examined...
www.science.org
October 30, 2025 at 6:52 PM
Are humans the only rational animals?
For thousands of years, we’ve thought so.
Our new paper, out today in Science, suggests otherwise!
We present evidence that chimpanzees possess several core capacities for rational thought.
Check out Emily's thread: bsky.app/profile/emil...
For thousands of years, we’ve thought so.
Our new paper, out today in Science, suggests otherwise!
We present evidence that chimpanzees possess several core capacities for rational thought.
Check out Emily's thread: bsky.app/profile/emil...
Reposted by Jan Engelmann
Are humans really the only rational animals? Our NEW PAPER 🎉 out in @science.org suggests otherwise! In a large collaboration led with my joint first author @hanna-schleihauf.bsky.social, we show that “Chimpanzees rationally revise their beliefs” 🧵
Chimpanzees rationally revise their beliefs
The selective revision of beliefs in light of new evidence has been considered one of the hallmarks of human-level rationality. However, tests of this ability in other species are lacking. We examined...
www.science.org
October 30, 2025 at 6:23 PM
Are humans really the only rational animals? Our NEW PAPER 🎉 out in @science.org suggests otherwise! In a large collaboration led with my joint first author @hanna-schleihauf.bsky.social, we show that “Chimpanzees rationally revise their beliefs” 🧵
Reposted by Jan Engelmann
Dr. Jane made an indelible mark on our understanding of chimpanzees and other species, and also of humankind and the environments we all share.
She inspired curiosity, hope, and compassion in countless people, and paved the way for many others.
#ThankYouJane #RememberingJane
Photo: Marko Zlousic
She inspired curiosity, hope, and compassion in countless people, and paved the way for many others.
#ThankYouJane #RememberingJane
Photo: Marko Zlousic
October 1, 2025 at 9:00 PM
Dr. Jane made an indelible mark on our understanding of chimpanzees and other species, and also of humankind and the environments we all share.
She inspired curiosity, hope, and compassion in countless people, and paved the way for many others.
#ThankYouJane #RememberingJane
Photo: Marko Zlousic
She inspired curiosity, hope, and compassion in countless people, and paved the way for many others.
#ThankYouJane #RememberingJane
Photo: Marko Zlousic
Reposted by Jan Engelmann
September 27, 2025 at 3:15 PM
Reposted by Jan Engelmann
"A signaling theory of self-handicapping"
📢New from: @yangxiang.bsky.social @gershbrain.bsky.social @tobigerstenberg.bsky.social
www.sciencedirect.com/science/arti...
📢New from: @yangxiang.bsky.social @gershbrain.bsky.social @tobigerstenberg.bsky.social
www.sciencedirect.com/science/arti...
A signaling theory of self-handicapping
People use various strategies to bolster the perception of their competence. One strategy is self-handicapping, by which people deliberately impede th…
www.sciencedirect.com
September 22, 2025 at 2:06 PM
"A signaling theory of self-handicapping"
📢New from: @yangxiang.bsky.social @gershbrain.bsky.social @tobigerstenberg.bsky.social
www.sciencedirect.com/science/arti...
📢New from: @yangxiang.bsky.social @gershbrain.bsky.social @tobigerstenberg.bsky.social
www.sciencedirect.com/science/arti...
Reposted by Jan Engelmann
I’m hiring!! 🎉 Looking for a full-time Lab Manager to help launch the Minds, Experiences, and Language Lab at Stanford. We’ll use all-day language recording, eye tracking, & neuroimaging to study how kids & families navigate unequal structural constraints. Please share:
phxc1b.rfer.us/STANFORDWcqUYo
phxc1b.rfer.us/STANFORDWcqUYo
Research Coordinator, Minds, Experiences, and Language Lab in Graduate School of Education, Stanford, California, United States
The Stanford Graduate School of Education (GSE) seeks a full-time Research Coordinator (acting lab manager) to help launch and coordinate the Minds,.....
phxc1b.rfer.us
September 15, 2025 at 6:57 PM
I’m hiring!! 🎉 Looking for a full-time Lab Manager to help launch the Minds, Experiences, and Language Lab at Stanford. We’ll use all-day language recording, eye tracking, & neuroimaging to study how kids & families navigate unequal structural constraints. Please share:
phxc1b.rfer.us/STANFORDWcqUYo
phxc1b.rfer.us/STANFORDWcqUYo
Reposted by Jan Engelmann
💙New paper!💙
How is knowledge transmitted across generations in a foraging society?
With @danielredhead.bsky.social
we found: In BaYaka foragers, long-term skills pass in smaller, sparser networks, while short-term food info circulates broadly & reciprocally
academic.oup.com/pnasnexus/ar...
How is knowledge transmitted across generations in a foraging society?
With @danielredhead.bsky.social
we found: In BaYaka foragers, long-term skills pass in smaller, sparser networks, while short-term food info circulates broadly & reciprocally
academic.oup.com/pnasnexus/ar...
Transmission networks of long-term and short-term knowledge in a foraging society
Abstract. Cultural transmission across generations is key to cumulative cultural evolution. While several mechanisms—such as vertical, horizontal, and obli
academic.oup.com
September 14, 2025 at 7:52 AM
💙New paper!💙
How is knowledge transmitted across generations in a foraging society?
With @danielredhead.bsky.social
we found: In BaYaka foragers, long-term skills pass in smaller, sparser networks, while short-term food info circulates broadly & reciprocally
academic.oup.com/pnasnexus/ar...
How is knowledge transmitted across generations in a foraging society?
With @danielredhead.bsky.social
we found: In BaYaka foragers, long-term skills pass in smaller, sparser networks, while short-term food info circulates broadly & reciprocally
academic.oup.com/pnasnexus/ar...
Reposted by Jan Engelmann
Update: the deadline for the Biological Basis of Behavior has been extended to Sept 18th! ✨
aprecruit.berkeley.edu/JPF05054
Please reach out to Linda Wilbrecht if you have any questions about the position.
aprecruit.berkeley.edu/JPF05054
Please reach out to Linda Wilbrecht if you have any questions about the position.
September 11, 2025 at 9:01 PM
Update: the deadline for the Biological Basis of Behavior has been extended to Sept 18th! ✨
aprecruit.berkeley.edu/JPF05054
Please reach out to Linda Wilbrecht if you have any questions about the position.
aprecruit.berkeley.edu/JPF05054
Please reach out to Linda Wilbrecht if you have any questions about the position.
Reposted by Jan Engelmann
My comment on Fillipo Torresan & @manuelbaltieri.bsky.social's "Disentangled representations for causal cognition" in Physics of Life Reviews:
www.sciencedirect.com/science/arti...
I argue that there is little meaningful analogy between learning from "pixels" vs "experience," but I praise
www.sciencedirect.com/science/arti...
I argue that there is little meaningful analogy between learning from "pixels" vs "experience," but I praise
Disanalogies between causal learning in animals vs. machines: Comment on “disentangled representations for causal cognition” by F. Torresan & M. Baltieri
None.
www.sciencedirect.com
July 11, 2025 at 6:15 AM
My comment on Fillipo Torresan & @manuelbaltieri.bsky.social's "Disentangled representations for causal cognition" in Physics of Life Reviews:
www.sciencedirect.com/science/arti...
I argue that there is little meaningful analogy between learning from "pixels" vs "experience," but I praise
www.sciencedirect.com/science/arti...
I argue that there is little meaningful analogy between learning from "pixels" vs "experience," but I praise
This paper really is developmental science at its best. Empirically convincing and theoretically rich. Shows once again that we cannot assume that the adult state is the default state.
Sharing our new paper published today in Nature Communications. In my view, this is our clearest demonstration to date that something profoundly changes in how infants encode the world around them before and after the emergence of self-representation. www.nature.com/articles/s41...
The self-reference memory bias is preceded by an other-reference bias in infancy - Nature Communications
A classic feature of human memory is that we remember information better when it refers to ourselves. Here, the authors show that before the emergence of self-concept, infants instead remember informa...
www.nature.com
July 10, 2025 at 12:04 PM
This paper really is developmental science at its best. Empirically convincing and theoretically rich. Shows once again that we cannot assume that the adult state is the default state.
Reposted by Jan Engelmann
Sharing our new paper published today in Nature Communications. In my view, this is our clearest demonstration to date that something profoundly changes in how infants encode the world around them before and after the emergence of self-representation. www.nature.com/articles/s41...
The self-reference memory bias is preceded by an other-reference bias in infancy - Nature Communications
A classic feature of human memory is that we remember information better when it refers to ourselves. Here, the authors show that before the emergence of self-concept, infants instead remember informa...
www.nature.com
July 9, 2025 at 3:59 PM
Sharing our new paper published today in Nature Communications. In my view, this is our clearest demonstration to date that something profoundly changes in how infants encode the world around them before and after the emergence of self-representation. www.nature.com/articles/s41...
Reposted by Jan Engelmann
Before, they are altercentric and remember better things that are relevant for others; afterwards, they shift towards egocentrism, remembering better things that are relevant for themselves - as we also do as adults.
July 9, 2025 at 3:59 PM
Before, they are altercentric and remember better things that are relevant for others; afterwards, they shift towards egocentrism, remembering better things that are relevant for themselves - as we also do as adults.
Reposted by Jan Engelmann
In a study of professors, women got 378 new work requests over 4 weeks vs 118 for men. Women spent more time on service, advising & teaching; men on research. Orgs should track who is taking extra duties & ensure they are rewarded and distributed fairly. www.forbes.com/sites/kimels...
Being Too Helpful At Work Can Hurt Your Career—Here’s How To Say No
Women are more likely to take on behind-the-scenes duties at work—extra tasks like onboarding or event planning—and it's hurting their careers. Here's how to say no.
www.forbes.com
July 7, 2025 at 8:03 PM
In a study of professors, women got 378 new work requests over 4 weeks vs 118 for men. Women spent more time on service, advising & teaching; men on research. Orgs should track who is taking extra duties & ensure they are rewarded and distributed fairly. www.forbes.com/sites/kimels...
Reposted by Jan Engelmann
🚨We're hiring! The Mind & Morality Lab is seeking a Lab Manager to start this September. Excited about research on social cognitive development? Apply here: forms.gle/4rKXD2x1vmkD.... Learn more about us: sites.brown.edu/mindmorality....
⏳ We’re reviewing applications on a rolling basis—apply early!
⏳ We’re reviewing applications on a rolling basis—apply early!
docs.google.com
June 30, 2025 at 7:17 PM
🚨We're hiring! The Mind & Morality Lab is seeking a Lab Manager to start this September. Excited about research on social cognitive development? Apply here: forms.gle/4rKXD2x1vmkD.... Learn more about us: sites.brown.edu/mindmorality....
⏳ We’re reviewing applications on a rolling basis—apply early!
⏳ We’re reviewing applications on a rolling basis—apply early!
Check out our new TICS paper on disagreement and metacognition! We argue that disagreement drives metacognitive development by expanding children's consideration sets.
With Antonia Langenhoff, Bill Thompson @wdt.bsky.social and Mahesh Srinivasan
www.sciencedirect.com/science/arti...
With Antonia Langenhoff, Bill Thompson @wdt.bsky.social and Mahesh Srinivasan
www.sciencedirect.com/science/arti...
Disagreement drives metacognitive development
Metacognition improves significantly over childhood, but the mechanisms underlying this development are poorly understood. We first review recent rese…
www.sciencedirect.com
June 19, 2025 at 10:13 AM
Check out our new TICS paper on disagreement and metacognition! We argue that disagreement drives metacognitive development by expanding children's consideration sets.
With Antonia Langenhoff, Bill Thompson @wdt.bsky.social and Mahesh Srinivasan
www.sciencedirect.com/science/arti...
With Antonia Langenhoff, Bill Thompson @wdt.bsky.social and Mahesh Srinivasan
www.sciencedirect.com/science/arti...
Reposted by Jan Engelmann
Online Now: Disagreement drives metacognitive development
Disagreement drives metacognitive development
Metacognition improves significantly over childhood, but the mechanisms underlying this development are poorly understood. We first review recent research demonstrating that disagreement prompts competent responses by young children across several metacognitive domains (confidence monitoring, information search, and source monitoring). We then propose a mechanistic model of how disagreement facilitates metacognition. We localize one main source of children’s metacognitive limitations in their still-developing capacities to reason about alternative possibilities, which manifest in an overly narrow focus on one hypothesis. Disagreement increases the child’s likelihood of representing alternative hypotheses, thereby promoting improved metacognitive reasoning. The broader proposal is that, through repeated experiences of disagreement, children become better at representing alternative possibilities even when reasoning on their own, leading to metacognitive development.
dlvr.it
June 18, 2025 at 7:04 PM
Online Now: Disagreement drives metacognitive development
Reposted by Jan Engelmann
🎊Fully funded PhD position on cooperative sustainability🌳
Are you curious about
🧒 developmental,
🌍 cross-cultural
🦧 species comparative
research on cooperative sustainability?
All info here or dm me with questions!
career2.successfactors.eu/sfcareer/job...
Please share! 🙏
Are you curious about
🧒 developmental,
🌍 cross-cultural
🦧 species comparative
research on cooperative sustainability?
All info here or dm me with questions!
career2.successfactors.eu/sfcareer/job...
Please share! 🙏
Career Opportunities: PhD position Cooperative Sustainability (14208)
career2.successfactors.eu
June 5, 2025 at 9:27 AM
🎊Fully funded PhD position on cooperative sustainability🌳
Are you curious about
🧒 developmental,
🌍 cross-cultural
🦧 species comparative
research on cooperative sustainability?
All info here or dm me with questions!
career2.successfactors.eu/sfcareer/job...
Please share! 🙏
Are you curious about
🧒 developmental,
🌍 cross-cultural
🦧 species comparative
research on cooperative sustainability?
All info here or dm me with questions!
career2.successfactors.eu/sfcareer/job...
Please share! 🙏
Chimpanzees are, just like humans, very curious about other's social relationships. In some cases, they even give up a material reward to watch social interactions. Check out this exciting new work by @laurasimonelewis.bsky.social
royalsocietypublishing.org/doi/full/10....
royalsocietypublishing.org/doi/full/10....
Chimpanzees and children are curious about social interactions | Proceedings of the Royal Society B: Biological Sciences
Curiosity is adaptive, enhances learning, and reduces uncertainty. Social curiosity
is defined as the motivation to gain information about the actions, relationships,
and psychology of others. Little ...
royalsocietypublishing.org
June 5, 2025 at 10:11 AM
Chimpanzees are, just like humans, very curious about other's social relationships. In some cases, they even give up a material reward to watch social interactions. Check out this exciting new work by @laurasimonelewis.bsky.social
royalsocietypublishing.org/doi/full/10....
royalsocietypublishing.org/doi/full/10....
Reposted by Jan Engelmann
New paper from Laura Lewis and Jan Engelmann et al. (including me) with a clever new method. Chimps and kids will forgo reward to get a chance to look at social interactions
royalsocietypublishing.org/doi/full/10....
royalsocietypublishing.org/doi/full/10....
Chimpanzees and children are curious about social interactions | Proceedings of the Royal Society B: Biological Sciences
Curiosity is adaptive, enhances learning, and reduces uncertainty. Social curiosity is defined as the motivation to gain information about the actions, relationships, and psychology of others. Little is known about the developmental and evolutionary roots ...
royalsocietypublishing.org
June 4, 2025 at 5:19 PM
New paper from Laura Lewis and Jan Engelmann et al. (including me) with a clever new method. Chimps and kids will forgo reward to get a chance to look at social interactions
royalsocietypublishing.org/doi/full/10....
royalsocietypublishing.org/doi/full/10....
Such an interesting perspective!
🥳🥳 New paper in @nathumbehav.nature.com: “When development constricts our moral circle." Contrary to popular belief, younger kids may start out with broader moral circles than older ones. Check it out here 👉 rdcu.be/eoaSe
w/ @mattiwilks.bsky.social @karrineldner.bsky.social & Lucius Caviola
w/ @mattiwilks.bsky.social @karrineldner.bsky.social & Lucius Caviola
When development constricts our moral circle
Nature Human Behaviour - Although many believe our moral circles expand with age, this Perspective discusses an early-emerging tendency to care for others.
rdcu.be
May 28, 2025 at 6:41 PM
Such an interesting perspective!
Reposted by Jan Engelmann
New paper! When do children trust others and when do they come up with their own ideas? Kids 8+ considered and weighed each person's confidence to decide whether to form new beliefs.
With @janengelmann.bsky.social and @celestekidd.bsky.social
Free here: dx.doi.org/10.1111/desc...
With @janengelmann.bsky.social and @celestekidd.bsky.social
Free here: dx.doi.org/10.1111/desc...
Children Use the Relative Confidence of People With Conflicting Perspectives to Form Their Own Beliefs
We provide evidence that children sensibly integrate the judgments of different people who disagree according to their confidence. We asked children (ages 5–10 years, N = 92) to make judgments about ...
dx.doi.org
May 21, 2025 at 10:46 PM
New paper! When do children trust others and when do they come up with their own ideas? Kids 8+ considered and weighed each person's confidence to decide whether to form new beliefs.
With @janengelmann.bsky.social and @celestekidd.bsky.social
Free here: dx.doi.org/10.1111/desc...
With @janengelmann.bsky.social and @celestekidd.bsky.social
Free here: dx.doi.org/10.1111/desc...
We cannot wait!
As a psych undergrad in St. Petersburg 6 years ago, I never imagined I’d be starting my own cognitive science lab at one of the world’s best research environments.
I’m beyond excited to share that I’ll be starting a Cognitive Epistemology Lab at @BerkeleyPsych in Fall 2026!
I’m beyond excited to share that I’ll be starting a Cognitive Epistemology Lab at @BerkeleyPsych in Fall 2026!
April 25, 2025 at 6:59 PM
We cannot wait!
Reposted by Jan Engelmann
Now officially out in Psychological Review 🥳
"Causation, Meaning, and Communication" by Ari Beller and me.
📃 (paper): psycnet.apa.org/record/2026-...
📜 (preprint): osf.io/preprints/ps...
"Causation, Meaning, and Communication" by Ari Beller and me.
📃 (paper): psycnet.apa.org/record/2026-...
📜 (preprint): osf.io/preprints/ps...
April 21, 2025 at 8:44 PM
Now officially out in Psychological Review 🥳
"Causation, Meaning, and Communication" by Ari Beller and me.
📃 (paper): psycnet.apa.org/record/2026-...
📜 (preprint): osf.io/preprints/ps...
"Causation, Meaning, and Communication" by Ari Beller and me.
📃 (paper): psycnet.apa.org/record/2026-...
📜 (preprint): osf.io/preprints/ps...
Reposted by Jan Engelmann
New paper: in what we think is one of the largest meta-analyses of animal behaviour, we find no evidence for inequity aversion in nonhumans (in accept/reject paradigms) royalsocietypublishing.org/doi/10.1098/...
Led by Oded Ritov & with @engelmann.bsky.social & Christoph Völter
Led by Oded Ritov & with @engelmann.bsky.social & Christoph Völter
No evidence for inequity aversion in non-human animals: a meta-analysis of accept/reject paradigms | Proceedings of the Royal Society B: Biological Sciences
Disadvantageous inequity aversion (IA), a negative response to receiving less than
others, is a key building block of the human sense of fairness. While some theorize
that IA is shared by species acro...
royalsocietypublishing.org
November 27, 2024 at 8:13 PM
New paper: in what we think is one of the largest meta-analyses of animal behaviour, we find no evidence for inequity aversion in nonhumans (in accept/reject paradigms) royalsocietypublishing.org/doi/10.1098/...
Led by Oded Ritov & with @engelmann.bsky.social & Christoph Völter
Led by Oded Ritov & with @engelmann.bsky.social & Christoph Völter