Lightnews — Scholar-powered news

Reposted by Christian Hilbe

Saptarshi Pal @saptarshi.bsky.social · Jul 1

A different view of direct reciprocity in the evolution of cooperation. The enduring strategy in an evolving population need not be discriminators if unconditional cooperators can occasionally mutate to a conditional strategy in presence of defectors.

royalsocietypublishing.org/doi/10.1098/...

Stabilizing unconditional cooperation | Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences

The ultimate goal of research on the evolution of cooperation could be conceived as finding a method for stabilizing strategies that always cooperate, that never deviate from cooperation, that never e...

royalsocietypublishing.org

2 8 12

Reposted by Christian Hilbe

PNAS Nexus @pnasnexus.org · Jun 23

A model of direct and indirect reciprocity—in which people act more favorably to people with good reputations—finds that full cooperation can always be sustained as a Nash equilibrium. In PNAS Nexus: academic.oup.com/pnasnexus/ar...

Strategies of reciprocity differ in whether players (here, player 1) take into account third-party interactions (here, between players 2 and 3). According to direct reciprocity, player 1 ignores third-party interactions. According to indirect reciprocity, player 1 takes such third-party interactions into account. The study's framework also allows for intermediate cases, where player 1 considers third-party interactions with some fixed probability λ.

1 1 7

Christian Hilbe @chilbe.bsky.social · Jun 18

Although I'm formally a co-author of this paper, I actually learned quite a bit myself about both complex systems and multiagent learning while working on this project. Thanks Wolfram for leading this really nice effort to bring fields closer together!

3

Reposted by Christian Hilbe

Wolfram Barfuss @wbarfuss.bsky.social · Jun 17

How to cooperate for a sustainable future? We don't know (yet), but I'm thrilled to share that our new perspective piece has just been published in @pnas.org. Bridging complexity science and multiagent reinforcement learning can lead to a much-needed science of collective, cooperative intelligence.

1 6 11

Christian Hilbe @chilbe.bsky.social · May 21

This is a great opportunity to work with @yohm.bsky.social, one of the leading researchers in evolutionary game theory these days. 🙂
I can only recommend applying ⬇️

Yohsuke Murase @yohm.bsky.social · May 21

📢 We’re hiring! RIKEN iTHEMS has launched a new Mathematical Social Science Team, and we’re looking for researchers to join us. If you're into cooperation, norms, or networks, check out the call!
🔗 www.riken.jp/en/careers/r...
Feel free to DM me if you have questions!

Seeking a few Research Scientists or Postdoctoral Researchers at Mathematical Social Science Team (W25015)

www.riken.jp

2 6

Reposted by Christian Hilbe

🎭 Adile Yasar @adileyasar.bsky.social · May 11

A little text about my journey with bipolar disorder. Seeing scientists speak openly about their experiences encouraged me to help break the stigma too. A part of me feels insecure about sharing this, but it also feels like the right thing to do.

adileyasar.github.io/one-of-these...

Texts

adileyasar.github.io

2 1 18

Reposted by Christian Hilbe

theobioarne.bsky.social @theobioarne.bsky.social · Apr 9

Corina Tarnita and I have discussed the relation between theoretical ecology and evolutionary game theory since my sabbatical in 2022. Now the paper is out, doi.org/10.1073/pnas... Cooperation in nature may not be mysterious when there are growth differences- questioning the notion of cooperation.

Reconciling ecology and evolutionary game theory or “When not to think cooperation” | PNAS

Evolutionary game theory (EGT)—overwhelmingly employed today for the study of cooperation in various systems, from microbes to cancer and from inse...

doi.org

1 8 27

Reposted by Christian Hilbe

Franziska Lesigang @franzilesi.bsky.social · Apr 6

How valuable is memory? In my very first paper, now published in Economics Letters, together with @chilbe.bsky.social and @nikoletaglyn.bsky.social, we give sufficient conditions under which a player can afford to remember less than their opponent. 🧵

📜 doi.org/10.1016/j.ec...

4 6 39

Reposted by Christian Hilbe

Eleanor Power @eapower.bsky.social · Apr 1

🚨Job alert! Two-year postdoc to join the Rep2SI project at @lsemethodology.bsky.social! We're looking for a modeller to join our team of ethnographers & experimentalists studying the role of reputation and reputational concern in perpetuating social inequality.
Apply by 4 May: tinyurl.com/yjccd3vv

Rep2SI: Reputation & the Reproduction of Social Inequality. A Leverhulme-funded project based at the LSE, combining ethnography, economic games, and modelling. We're looking for a modeller to join our core team as a two-year postdoctoral research officer.

1 46 43

Christian Hilbe @chilbe.bsky.social · Mar 17

Awesome news, congrats! 🙂

1 2

Reposted by Christian Hilbe

Lucas Molleman @lucasmolleman.bsky.social · Feb 17

Just two days left to apply for this postdoc position in @bjornlindstrom.bsky.social's group in Stockholm, on an exciting project on social learning and cultural evolution ki.varbi.com/en/what:job/... in collaboration with Piet van den Berg (Leuven) and myself (Amsterdam). Reposts welcome!

Postdoctoral Researcher in computational psychology/cognitive science with focus on social learning and cultural evolution

Do you want to contribute to top quality research? The Mechanisms of Social Behavior lab at the Karolinska Institutet in Stockholm, Sweden is seeking a highly qualified postdoctoral researchers to joi

ki.varbi.com

11 8

Reposted by Christian Hilbe

Hannes Rusch @hannesrusch.bsky.social · Feb 14

🚨 POSTDOC WANTED 🚨

Join the Behavioral Economics of Crime & Conflict Group at MPICSL in Freiburg!

We're seeking a behavioral scientist with PhD in economics, psychology, or related. Experience with experiments is key.

Full time, 2 years, no teaching. Apply now!

tinyurl.com/FGR251

#EconSky

1 21 21

Christian Hilbe @chilbe.bsky.social · Feb 16

Thanks for making me aware of the paper! I'm wondering whether the choice of game makes the difference here (volunteer's dilemma versus prisoner's dilemma). Either way, I'll have to read the paper more closely! :-)

1 1

Christian Hilbe @chilbe.bsky.social · Feb 12

Thanks for making me aware! It seems to me the two studies have slightly different setups (in ours, participants keep their co-player for many rounds, and they "only" engage in two different versions of a prisoner's dilemma). But I like your setup and your results a lot!

1 1

Christian Hilbe @chilbe.bsky.social · Feb 12

Thanks David!

Christian Hilbe @chilbe.bsky.social · Feb 12

When individuals engage in several games, there can be spillovers from one game to another. In principle, such spillovers could be used strategically to promote cooperation across games. However, our experiment suggests people in concurrent games cooperate less, compared to a control treatment.

1 3

Christian Hilbe @chilbe.bsky.social · Feb 12

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...

5 15 45

Reposted by Christian Hilbe

Dominik Deffner @dominikdeffner.bsky.social · Feb 3

🏰 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)

2 92 86

Reposted by Christian Hilbe

theobioarne.bsky.social @theobioarne.bsky.social · Jan 10

🚨 Annual IMPRS Call for Doctoral Positions at MPI-EvolBio 🚨
🎓 Fully-funded 3.5-year doctoral projects available in diverse research areas!
#PhD #ResearchOpportunities #IMPRS #Science evolbio.mpg.de/3801127/annu...

12 12

Christian Hilbe @chilbe.bsky.social · Jan 7

✈️

1

Christian Hilbe @chilbe.bsky.social · Jan 7

We miss you already. Have a great start! 🙂

1 2

Reposted by Christian Hilbe

Nikoleta Glynatsi @nikoletaglyn.bsky.social · Jan 7

I am genuinely very excited to announce that I am officially a Research Scientist at the RIKEN Center for Computational Science in the Discrete Event Simulation team, led by Nobuyasu Ito! 🇯🇵 🗾 🗻

4 3 31

Reposted by Christian Hilbe

Julien Lie-Panis @jliep.bsky.social · Dec 16

How do institutions enable large-scale cooperation? 🤝

Institutions promote cooperation but depend on cooperation to function. In a new study in @pnas.org,
@jbaptistandre.bsky.social, N. Baumard, @lfitouchi.bsky.social and I explore this paradox. 🧵

👉 www.pnas.org/doi/10.1073/...

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

3 17 40

Christian Hilbe @chilbe.bsky.social · Dec 11

A very nice journey with a great ending: In a new paper, @NikoletaGlyn describes how longer memory allows people to sustain reciprocal cooperation. For details, see 🧵 below 👇
Paper: www.pnas.org/doi/10.1073/...

8 18

Reposted by Christian Hilbe

Mason Youngblood @masonyoungblood.bsky.social · Dec 5

Université PSL's new research network CultureLab is hiring two 5-year postdocs to develop computational methods to analyze cultural, historical, and social data! Research budget included - Deadline on 12-15-24, details below ⬇️

1 12 13