Well, in more pleasant news, the Fish Doorbell is back... π§ͺ
02.03.2026 20:32 β π 330 π 158 π¬ 4 π 9Well, in more pleasant news, the Fish Doorbell is back... π§ͺ
02.03.2026 20:32 β π 330 π 158 π¬ 4 π 9
New article out exploring great ape name recognition! We find partial evidence that zoo-living chimps & bonobos know each other's names π Huge thanks to Animal Behavior and Cognition (a great open-access journal) & co-authors for your collaboration!ππ΅
unsvr1.com/web/abc/work...
New @sfb1528.bsky.social and @rtg2906-curiosity.bsky.social publication. We show that mothers are worthy of the pedagogical assumption: they preferentially sample information that fills their child's knowledge gaps and children learn best from maternal sampling: www.sciencedirect.com/science/arti...
27.02.2026 07:56 β π 15 π 6 π¬ 0 π 1Check out my new paper with @drbarner.bsky.social in JECP! We asked whether mutual exclusivity inferences involve epistemic reasoning about what a speaker knows, and whether children can infer speakers' knowledge of words from linguistic conventionality. (1/7) www.sciencedirect.com/science/arti...
27.02.2026 02:41 β π 19 π 6 π¬ 1 π 1
A new preprint, co-authored with @johnwkrakauer.bsky.social:
The Deliberation Taboo
Cognitive science is, nominally, the science of thinking. We argue that the field has no theory of what thinking is and, even worse, that the topic has largely dropped out of focus. 1/
osf.io/preprints/ps...
ManyBabies8: Screen Use π±
MB8 aims to document early screen use across diverse cultural contexts & examine links to language & socio-emotional development in children under 3.
Weβre inviting you to join!
Interested?
π Fill out our short survey: forms.gle/7ASVadD7LT4j...
More: manybabies.org/MB8/
Language learning as ontogenetic adaptation
Opinion by Manuel Bohn (@elmanubohn.bsky.social) & Marisa Casillas
tinyurl.com/48pdbv5b
βHumans across multiple languages spontaneously associate the nonwords kiki & bouba with spiky & round shapes, respectively...We tested the bouba-kiki effect in baby chickens. Similar to humans, they spontaneously chose a spiky shape when hearing a kiki sound & a round shape when hearing a bouba.βπ²π§ͺ
19.02.2026 19:20 β π 331 π 122 π¬ 13 π 40
When something doesn't work properly, can your dog tell if the object is broken or if you just don't know how to use it?
I'm pleased to share my group @jhu.edu's first study with pet dogs (!!), now out in @plosone.org
Led by Amalia Bastos: Do dog rationally infer the causes of failed actions? 1/4
i love broccoli but i have yet to find a recipe for broccoli soup that isn't "meh"
13.02.2026 19:10 β π 0 π 0 π¬ 1 π 0Abstract of the paper
Figure 1 - experimental setup
Figure 2 - accuracy over time
Figure 3 - semantic similarity within/across games
I always thought preschoolers were too egocentric to do well on communication tasks where they had to talk about novel referents. Old papers reported they'd say stuff like "this one looks like my uncle's hat."
@vboyce.bsky.social shows that this is wrong!
osf.io/preprints/ps...
π’ New Paper π¨
Hadza food-sharing is egalitarian, yet offers in giving games have never matched the equitable redistribution seen in real life.
In this study, we allowed people to give *or* take. Lifelike equitable distributions only appeared when people took from peers in surplus.
bit.ly/4kvLOwA
π New paper in Nature Communications π
rdcu.be/e24jT
Does our environment influence how likely we are to help others?
Very happy to see "Pretending not to know reveals a capacity for model-based self-simulation", a collaboration with @chazfirestone.bsky.social and @ianbphillips.bsky.social, out in Psych. Science!
journals.sagepub.com/doi/10.1177...
π§΅
This study was an amazing collaborative experience. I'm really really grateful to all the wonderful people who contributed and made this happen.
It's the closest I have ever come to finding something like a "universal" in human cognition.
Very excited that this paper is out!
www.science.org/doi/full/10....
Led by the fabulous @dorsaamir.bsky.social with invaluable contributions from many awesome collaborators.
Great apes may use playful teasing to learn about their social relationships. In a new paper, Erica Cartmill & I propose a bond-testing hypothesis for ape teasing. Out today in Phil Trans Biology: royalsocietypublishing.org/rstb/article...
06.02.2026 18:37 β π 10 π 7 π¬ 0 π 0
By age 6, many children in the US believe that numbers are infinite, despite initially representing counting as a meaningless & finite chain of words. In a new paper w/ Jess Sullivan & @drbarner.bsky.social, we explored the basis for this conceptual change. 1/n
www.sciencedirect.com/science/arti...
Imagination in bonobos!
I am thrilled to share a new paper w/ Amalia Bastos, out now in @science.org
We provide the first experimental evidence that a nonhuman animal can follow along a pretend scenario & track imaginary objects. Work w/ Kanzi, the bonobo, at Ape Initiative
youtu.be/NUSHcQQz2Ko
Why do otherwise rational people disagree about the same evidence? Our new paper finds that group membership is a deeply rooted influence on how we form beliefs, leading even preschoolers to bias their evidential standards and form inaccurate beliefs.
www.nature.com/articles/s41...
1/7 Can infants recognise the world around them? πΆπ§ As part of the FOUNDCOG project, we scanned 134 awake infants using fMRI. Published today in Nature Neuroscience, our research reveals 2-month-old infants already possess complex visual representations in VVC that align with DNNs.
02.02.2026 16:00 β π 155 π 70 π¬ 4 π 8With most psychedelic drugs, you never know what you're going to get. But this mysterious mushroom from China - without fail - causes users to hallucinate tiny people: crawling up walls, popping out from under furniture and marching under doors. www.bbc.com/future/artic...
22.01.2026 17:31 β π 2235 π 611 π¬ 140 π 947
"The relationship between childhood exploration and population-level innovation in cultural evolution" with @ndersen.bsky.social @sheinalew.bsky.social @felixthehauskat.bsky.social out in Proc B
royalsocietypublishing.org/rspb/article...
I just created a series of seven deep-dive videos about AI, which I've posted to youtube and now here. π
Targeted to laypeople, they explore how LLMs work, what they can do, and what impacts they have on learning, well-being, disinformation, the workplace, the economy, and the environment.
Figure shows the methods used in the paper's experiments. In the left column are the methods for Exp 1 (Collection) and in the right are the methods for Exp 2 (Distribution). In each video, three women sit at a table. One sits in the middle, serving as a collector/distributor, and two sit in the foreground with plates. During familiarization trials, resources were collected from or distributed to their plates with an occluder on the screen hiding the outcomes. During test trials, the same videos were played but with the outcomes shown such that infants either viewed an equal collection/distribution or an unequal collection/distribution.
Out in @cognitionjournal.bsky.social with @jaeminhwang.bsky.social, David Sobel (@candmlab.bsky.social), and @jessicas.bsky.social! Most studies of infantsβ fairness expectations focus on resource distribution, but in everyday life, we engage in many different kinds of resource exchanges.
21.01.2026 16:32 β π 9 π 8 π¬ 1 π 1New paper with Marina Bedny out in eLife (elifesciences.org/articles/101...). Main takeaway: Different kinds of causal knowledge are supported by different semantic brain networks - consistent with the "intuitive theories" framework from developmental psychology. 1/
20.11.2025 22:15 β π 30 π 9 π¬ 1 π 0program book for the bcccd conference, featuring a graphic of a small child doing a puzzle
a conference hall with a speaker ind the front, behind him the screen is showing a slide; the backs of the audience's heads are visible
Extremely stoked to be at #bcccd26 - kicking off with a workshop on "the format of structure of thought in the developing mind"
15.01.2026 09:07 β π 10 π 1 π¬ 0 π 0So excited to share this new paper, out in JEP:G with the incredible @jamieamemiya.bsky.social, Gail Heyman, and @carenwalker.bsky.social! We tested how children and adults reason about disparate impact policies: formally neutral laws or rules that are indirectly discriminatory. (1/7)
14.01.2026 15:03 β π 15 π 5 π¬ 1 π 2
With some trepidation, I'm putting this out into the world:
gershmanlab.com/textbook.html
It's a textbook called Computational Foundations of Cognitive Neuroscience, which I wrote for my class.
My hope is that this will be a living document, continuously improved as I get feedback.
π§΅New preprint: Adults often agree with their ingroup even when evidence says otherwise. Why?
To find out, we studied kids, who show the same tendency but *before* political identities take hold. With developmental data, we can see the basic psychological ingredients.
doi.org/10.31234/osf...
1/11