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Dominik Deffner

@dominikdeffner.bsky.social
1.6K followers 1.2K following 81 posts

Assistant Professor of Computational Modelling of Behaviour @unimarburg.bsky.social | Collective decision-making and cultural evolution | www.uni-marburg.de/en/fb04/team-def…

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Reposted by Dominik Deffner
Anna Thoma @annaithoma.bsky.social · 30/09/2026
🚻 Even though women make up the majority of psychology students, they still leave research at a higher rate than men. 📄 In our new paper, led by Xinyi Zhao, we take a closer look at the gender attrition gap in academic psychology. 👉 Get a quick overview in this press release: mpib.berlin/EBDvH
mpib.berlin
Women leave psychological research more often than men
The bigger hurdle appears not to be entering academia but staying in it: An international study by researchers at the Max Planck Institute for Human Development shows that, despite high entry rates, w...
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Franziska Brändle @frabraendle.bsky.social · 29/09/2026
Incredibly excited to announce that I’m starting my own research group at Justus-Liebig-Universität in Gießen as part of the excellence cluster “The Adaptive Mind”! 🥳 I'm looking to fill the first PhD position. If you’re interested, apply here: tinyurl.com/38p3h22p Please spread the word! 🙏
jobs.uni-giessen.de
Doctoral student (m/f/d) Computational Motivation – Justus-Liebig-Universität Gießen
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Brendan Barrett @bjjbarrett.bsky.social · 29/09/2026
I am part of a team guest editing a special issue of the American Journal of Primatology on "Digitization and use of legacy datasets in primatology” and we are seeking out submissions due on 1 September 2027. onlinelibrary.wiley.com/page/journal...
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Ralf Kurvers @ralfkurvers.bsky.social · 25/09/2026
Could not be more proud of @felicie-dhellemmes.bsky.social for pulling off this insane project, tracking humans and fish simultaneously to study how they interact
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Félicie Dhellemmes @felicie-dhellemmes.bsky.social · 25/09/2026
Proud to present our latest work "Tracking human foragers and their prey reveals adaptive predator-prey dynamics", now hosted on BioRxiv! 🧵 doi.org/10.64898/202... @ralfkurvers.bsky.social @scioi.bsky.social @arc-mpib.bsky.social @alexschakowski.bsky.social @dominikdeffner.bsky.social
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T Revathe @revathe.bsky.social · 24/09/2026
!! New in @science.org !! How do animals learn broad skills necessary for survival in the wild? Our latest study on wild Sumatran orangutans at Suaq provides answers. 1/11 www.science.org/doi/10.1126/...
science.org
How 8 years of social and individual learning interact to shape ecological competence in orangutans
Cultural learning permeates human skill and knowledge acquisition. To understand its importance for nonhuman apes, we analyzed just under 7000 records of behavioral bouts of social and individual lear...
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Valerii Chirkov @chirkovv.bsky.social · 24/09/2026
New paper alert! 🚨 How does social information quality impact collective intelligence in human groups? We used immersive 3D experiments to find out! Out now in Nature Comms 🧵👇 Read it here: www.nature.com/articles/s41...
nature.com
Payoff selectivity drives collective intelligence during dynamic resource tracking in humans - Nature Communications
Humans rely on complex social learning and collective adaptation to navigate dynamically changing environments. The authors show that human collective intelligence in a dynamic, naturalistic task depe...
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Dominik Deffner @dominikdeffner.bsky.social · 24/09/2026
Now published in @natcomms.nature.com! Using a 3D immersive-reality group experiment, we show how people integrate dynamically changing personal and social cues in realistic environments, resulting in either collective intelligence or maladaptive behavior! Paper: www.nature.com/articles/s41...
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Nico Schuck @nicoschuck.bsky.social · 21/09/2026
2023: 8,039 proposals 2024: 10,360 proposals 2025: 17,066 proposals 2026: 21,627 proposals Something's gotta give
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MPI-EVA Leipzig @mpi-eva-leipzig.bsky.social · 18/09/2026
How does seasonal scarcity shape cooperation & defection in the use of natural resources? New study from #Pemba shows how seasonal fluctuations lead to illegal resource extraction, shedding light on the enduring human challenge of managing the commons. tinyurl.com/3k79uccd & doi.org/10.1016/j.cr...
tinyurl.com
Seasonal scarcity and the challenge of preserving natural resources
New study shows how predictable income shortfalls can put shared forests under pressure
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Reposted by Dominik Deffner
Ralf Kurvers @ralfkurvers.bsky.social · 18/09/2026
Very proud of @kirikuroda.bsky.social for preprinting this study on social influence and information cascades in experienced based decision making. osf.io/preprints/ps... @arc-mpib.bsky.social. Great collab with @simyciri.bsky.social @dirkwulff.bsky.social
osf.io
OSF
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Jordan Deakin @jordantdeakin.bsky.social · 17/09/2026
📣 NEW PREPRINT ALERT! 📣 📝Preprint: www.biorxiv.org/content/10.6... When choosing between options with multiple attributes, what does the brain actually compare - individual attributes or integrated option values? We combined EEG + eye-tracking to find out... and found evidence for the latter 🧠
biorxiv.org
Fixation-evoked potentials reveal neural signatures of hierarchical value-integration during decision-making
Many decisions require maintaining beliefs across multiple levels of representation, from sampling and integrating information to forming action plans. To elucidate these processes and reveal the neur...
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Reposted by Dominik Deffner
Mason Youngblood @masonyoungblood.bsky.social · 06/09/2026
New tutorial preprint about simulation-based inference! Shows how to fit a cultural evo model to baby name data using approx Bayesian computation, random forests, and deep learning. Wrote for @eslr.bsky.social but wanted to share with others in @culturalevolsoc.bsky.social! :) osf.io/preprints/so...
osf.io
OSF
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Melanie Fischer @melaniefischer.bsky.social · 01/09/2026
Wir suchen Verstärkung für unser Team zum Aufbau eines Ambulanzbereichs für Psychotherapie mit Paaren/Familien und Paartherapie. Gerne mit Interesse, im Rahmen einer unbefristeten Stelle diesen Bereich im schönen Marburg langfristig mitzugestalten. Ich freue mich sehr darauf! Mehr👇🏻
stellenangebote.uni-marburg.de
Wissenschaftliche*r Mitarbeiter*in und Psychologische*r Psychotherapeut*in
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Haneul Jang @haneuljang.bsky.social · 28/08/2026
New preprint! 💙 Together with @amandinevisine.bsky.social, we observed that BaYaka hunter-gatherer women and girls flexibly alternate between childcare and subsistence responsibilities during foraging trips, a pattern we call “relay cooperation” osf.io/preprints/so...
 Schematic illustration of the relay cooperation mechanism
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Haneul Jang @haneuljang.bsky.social · 26/08/2026
New paper 💙 Together with Ayana Tanaka, Shun Hongo, and Akira Takada, we compared early childhood caregiving among !Xun in Namibia and Baka in Cameroon, showing how maternal care and care from others come together across the two hunter-gatherer populations. onlinelibrary.wiley.com/doi/full/10....
onlinelibrary.wiley.com
Reframing Mother–Child Closeness and Cooperative Caregiving: A Comparative Study of Two Hunter‐Gatherer Populations
Objectives Caregiving during early childhood emerges from a dynamic interplay between maternal and allomaternal contributions. This study aimed to challenge polarized portrayals of hunter-gatherer c...
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Björn Lindström @bjornlindstrom.bsky.social · 17/08/2026
When is language needed for human culture to accumulate? When observing successful behavior is not enough to recover the mental model behind it! This is an incredibly ambitious project, involving large-scale experimentation, RL and ABM modeling, and computational language analyses.
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Reposted by Dominik Deffner
Ralf Kurvers @ralfkurvers.bsky.social · 13/08/2026
Proud of the whole team, esp of @alexschakowski.bsky.social for putting together this review: Toward a psychology of real-life decision-making. www.sciencedirect.com/science/arti... @mpib-berlin.bsky.social @scioi.bsky.social @arc-mpib.bsky.social
sciencedirect.com
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Anne Scheel @annemscheel.bsky.social · 23/07/2026
New preprint w/ Leo Tiokhin & @lakens.bsky.social! Registered Reports (RRs) are great for science b/c publication is guaranteed before results are known, reducing publication bias & QRPs. This feature supposedly also makes them great for *scientists*. But is that really true? 1/ tinyurl.com/4sy993rr
tinyurl.com
Career incentives make Registered Reports unattractive under realistic academic conditions
Registered Reports are a publication format designed to reduce publication bias by guaranteeing publication before results are known. This guarantee is considered attractive in the prevailing ‘publish...
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Reposted by Dominik Deffner
Daniel Heck @danielheck.bsky.social · 17/07/2026
Our article introducing the #openESM database for experience samling data, led by @bsiepe.bsky.social, has now been published 🎉 Paper: link.springer.com/article/10.3... openESM interactive website: openesmdata.org GitHub repository: github.com/openesm-proj...
openESM logo
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Reposted by Dominik Deffner
Paul Bergmann @pkbergmann.bsky.social · 10/07/2026
New preprint with @dominikdeffner.bsky.social: While social learning is broadly adaptive when repeated decision outcomes are independent, we show that when outcomes depend on prior success, most social learning strategies deteriorate performance and increase inequality: doi.org/10.31234/osf... 1/7
doi.org
OSF
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Dominik Deffner @dominikdeffner.bsky.social · 10/07/2026
Learning from the most successful people makes sense? We show that social learning, and especially payoff bias, is bad when choice outcomes are dependent on prior success💰 As such "rich-get-richer" dynamics are everywhere, this shows fundamental boundary conditions for the benefits of SL!
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Haneul Jang @haneuljang.bsky.social · 03/07/2026
Happy to have contributed to the latest HBES newsletter on our recent paper, The Meanings and Dividends of Man the Hunter, led by @vivek123.bsky.social I reflect on MTH through the lens of my research on Bayaka women's foraging & cooperation in the Congolese rainforest www.hbes.com/revisiting-m...
hbes.com
Revisiting Man the Hunter - HBES
– by Haneul Jang For decades, the phrase Man the Hunter has occupied a central place in discussions of human evolution. Today, however, the phrase sounds outdated, evoking a familiar image of men hunt...
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Theiss Bendixen @theissbendixen.bsky.social · 03/07/2026
New research! 📚 We built the largest database to date of cephalopod species - octopuses, squids and cuttlefish - and their brains, habitats and behaviors 🐙🧠📈 What did we find?👇 Press release: www.lse.ac.uk/news/ecologi... Paper: www.sciencedirect.com/science/arti...
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Oleg Sobchuk 🇺🇦 @sobchuk.bsky.social · 29/06/2026
📣 I'm hiring! Two positions (PhD student & Postdoc) in my ERC project Macroevolution of European Literature. Let's study the cultural evolution of literature using massive data 📚📈 📍Frankfurt | Apply by August 15 Details: www.aesthetics.mpg.de/en/career/jo... Please repost to help spread the word!
Job announcement of two positions at the Max Planck Institute for Empirical Aesthetics in Frankfurt: postdoc (Macroevolution of European Literature) and PhD student (Computational Literary Studies). Successful candidates will be affiliated with the research group Cultural Evolution of the Arts.
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Reposted by Dominik Deffner
Charley Wu @thecharleywu.bsky.social · 20/06/2026
Look how far we've come in just a few years! We're fast as well! It turns out, recruiting reviewers is much easier when they're not being used as free labor for massively profitable publishers Support free-to-publish and Open Access science by submitting to Open Mind today! direct.mit.edu/opmi
direct.mit.edu
Open Mind | MIT Press
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Many Minds podcast @manymindspod.bsky.social · 15/06/2026
The ethnographic record shows that women do hunt, sometimes for big game. Does that mean that 'Man the Hunter' was a myth all along? Just one of the topics discussed in our latest episode, w/ @vivek123.bsky.social! Listen: disi.org/is-man-the-h...
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Reposted by Dominik Deffner
Ralf Kurvers @ralfkurvers.bsky.social · 15/06/2026
New preprint led by @lucasmolleman.bsky.social investigates social information use across the human lifespan. Testing >40,000 participants aged 6-80 in museums in Berlin and Japan. psyarxiv.com/hec96
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Alex Mesoudi @alexmesoudi.com · 06/06/2026
Here's a proper mathematical model of the interaction between conformity and migration www.sciencedirect.com/science/arti... mostly coming to the same conclusions as the simulations I did here journals.plos.org/plosone/arti...
sciencedirect.com
Interaction of migration and frequency dependence in cultural populations
Migration has shaped cultural and genetic diversity. Population genetics shows that low migration rates between populations can homogenise them. Howev…
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Reposted by Dominik Deffner
Daniel Heck @danielheck.bsky.social · 02/06/2026
Postdoc position @unimarburg.bsky.social in the project: "Bridging the Gap Between Verbal Psychological Theories & Formal Statistical Modeling with Large Language Models" (funded by @volkswagenstiftung.de) 📅Start: 01.10.2026 |⏳3 years 🔗 Job posting: uni-marburg.de/78NrWT Thanks for sharing!
logo of Psychological Methods Lab
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Ryan Senne (he/him) @ryguy.io · 30/05/2026
Move over, GLM-HMM—there’s a new hidden Markov model in town. In our new preprint, we introduce the DDM-HMM: a model that jointly infers latent decision states from reaction times and choices. Using 24-hour behavioral data from rats, we found that evidence accumulation changes with time of day!
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Alex Mesoudi @alexmesoudi.com · 11/05/2026
Here is @alexschakowski.bsky.social on social learning strategies in Finnish fishing competitions
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Anna Graff @annagraff.bsky.social · 01/05/2026
Check out our new paper! (1/5) www.pnas.org/doi/10.1073/... @err-ring.bsky.social @kkshimizu1.bsky.social @markstoneking.bsky.social @balthasarbickel.bsky.social @chiarabarbieri.bsky.social @isle-uzh.bsky.social @nccrlanguage.bsky.social
pnas.org
An inverse correlation between structural linguistic and human genetic diversity | PNAS
Linguistic structures show uneven global distributions, but it remains unknown to what extent such distributions are driven by human population his...
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Julia Penndorf @julia-penndorf.bsky.social · 01/05/2026
🎉🦜NEW PAPER ALERT 🦜🎉 Which social learning biases underly the acquisition of novel food in wild parrots ? We (@lucymaplin.bsky.social, @bjjbarrett.bsky.social, @sonjawild.bsky.social, @drjohnmartin.bsky.social) presented >700 cockies with a novel, artificial food (🧵1/6)
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Michael P. Grosz @mp-grosz.bsky.social · 27/04/2026
Two simulation studies in this paper show that doubly robust methods for causal inference—especially regression weighted by inverse propensity scores—are more robust to model misspecification than traditional regression across many scenarios. link.springer.com/article/10.3...
link.springer.com
A review and evaluation of doubly robust approaches for estimating average treatment effects - Behavior Research Methods
In nonexperimental studies, obtaining an unbiased estimate of the average treatment effect (ATE) typically requires two key assumptions: that all relevant covariates are measured (i.e., no unmeasured ...
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Reposted by Dominik Deffner
Alex Mesoudi @alexmesoudi.com · 17/04/2026
Final version of this paper is now published. Find out what the microfinance literature can tell us about the evolution of human cooperation
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ESLR @eslr.bsky.social · 22/04/2026
🚨ESLR Workshop tomorrow: 🗓 April 23, 2026 ⏰ 2pm CET Online Bayesian modeling of cognition and behavior using brms and Stan @alexschakowski.bsky.social and @lucahahn.bsky.social Join at: calendar.app.google/mNSksgpimmrs...
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Jeremy Koster @jeremykoster.bsky.social · 16/04/2026
There is a fully-funded PhD position at the Max Planck Institute for Evolutionary Anthropology to pursue dissertation research among the Mayangna of Nicaragua, expanding a longitudinal study of subsistence strategies and behavioral ecology. Please share the posting! www.eva.mpg.de/career/posit...
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Yang Teoh @yyangteoh.bsky.social · 14/04/2026
Now out in PNAS with @jaeyoungson.bsky.social, Alice Xia, @apaxon.bsky.social & @orielf.bsky.social. Medial temporal lobe encodes predictive representations of people's real-world social networks which afford them key advantages in social navigation. www.pnas.org/doi/10.1073/... 🧵
pnas.org
Medial temporal lobe encodes cognitive maps of real-world social networks | PNAS
Humans routinely solve social problems by navigating densely interconnected networks—gossiping strategically, brokering across cliques, and coordin...
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Verena Kunz @verenakunz.bsky.social · 07/04/2026
We're looking for a new postdoc to join our team! Do you enjoy conceptualizing, improving, and rethinking empirical methods training for social scientists? Then this job might be for you 😊 Feel free to share among your network and to reach out if you have any questions!
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Reposted by Dominik Deffner
Paul Smaldino @psmaldino.bsky.social · 02/04/2026
I've been thinking a lot about the foundations of cultural evolutionary theory. While there's been a lot of work on transmission mechanisms, there has been far less work on cultural *selection*. Here's a new working paper presenting a taxonomy of cultural selection processes. osf.io/preprints/so...
Title page for working paper: "The Varieties of Cultural Selection"
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Dominik Deffner @dominikdeffner.bsky.social · 02/04/2026
New MSc Evolutionary Anthropology in Leipzig 😍 Would've absolutely loved this program!!! www.uni-leipzig.de/en/studying/...
uni-leipzig.de
Evolutionary Anthropology MSc
The programme aims to provide in-depth knowledge of the latest research into human evolution and development. The focus is on the genetic, paleoanthropological and cognitive aspects of human behaviour and the mind. Particular emphasis is placed on engaging with the complexities of research processes, and on developing skills in designing, implementing and evaluating studies. Students will gain professional expertise in handling and rigorously analysing and effectively presenting data, preparing them for doctoral research.
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Nathaniel Haines @natehaines.bsky.social · 15/03/2026
New blog just dropped! This one is all about estimators—we cover James-Stein, classical test theory, empirical Bayes, penalized regression, and hierarchical models, showing how they all can be used to do a better job than sample stats alone 🤓 haines-lab.com/post/how-to-...
haines-lab.com
How to Estimate a Mean, and What It Means for Science | Computational Psychology
Introduction If I asked you to estimate 30 means, you would probably compute 30 sample means. And you would be provably wrong (well.. maybe not wrong, but at least provably inefficient).
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Cecilia Padilla-Iglesias @ceciliapad.bsky.social · 01/04/2026
🚨I couldn’t be happier to share that today I’m officially starting my own research group at the Human Origins Cluster of Excellence in Tübingen (@humanorigins.bsky.social)!🚨We’ll explore drivers of genetic, phenotypic and cultural evolution by integrating evidence from many fields in creative ways 🧬
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Nature @nature.com · 30/03/2026
Becoming a parent is much more detrimental to women’s academic careers than it is to men’s Read the full story: go.nature.com/4v4rxmQ
IMPACT OF PARENTHOOD ON UNIVERSITY EMPLOYMENT. Line graph shows how the probability of holding a research position changes from four years before to seven years after having children.
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Paula Ibáñez de Aldecoa @pialdecoa.bsky.social · 27/03/2026
📣 Out now in @pnasnexus.org our *NEW PAPER* revamping a long-standing debate: to what extent does causal reasoning aid the cultural evolution of technology? academic.oup.com/pnasnexus/ad...
academic.oup.com
The roles of cultural transmission and causal reasoning in the cultural evolution of technology
Abstract. Humans are uniquely capable of producing highly efficient tools, but the extent to which this capacity depends on individual reasoning abilities
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Philipp Golka @pgolka.bsky.social · 26/03/2026
We are hiring a tenure track (!) senior researcher in political economy! This is obviously a great job (permanent without teaching obligation) and I hope you all apply. However, I would like to take a moment to share just how significant this is in the German academic context ⬇️
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ESLR @eslr.bsky.social · 26/03/2026
📣 Check out the ESLR Skill-Sharing Sessions schedule for Spring 2026! A series of workshops by the ESLR community on reproducibility, Bayesian modeling, accessibility, and more 🌱 The first one is happening TODAY! 🔗 See the full schedule: www.eslrsociety.com/events
eslrsociety.com
ESLR | Events
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Liran Samuni @lirsamuni.bsky.social · 26/03/2026
Bonobos and bottlenose dolphins may seem worlds apart, but together they reveal key conditions that foster cooperation beyond group boundaries
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