la biologie comme support théorique du socialisme https://www.youtube.com/watch?v=8LaIsAlssaU (il faut coopérer pour survivre: les rapports de compétition et de prédation ne sont pas les plus déterminants dans les écosystèmes)

#biology #socialism #coop #EvolutionOfCooperation

My #introduction keywords: #academic #modelling #evolution #cooperation #gameTheory #ecology #appliedMathematics

I'm a #postdoc specialising in evolutionary and ecological modelling, currently at #QUT and #GriffithUni in #Australia

Previous work: #evolutionOfCooperation, estimating undetected #extinctions, #qualitativemodelling, migratory #phenology, #foodweb #modelling, local #adaptation, #carryover effects, #dispersal.

My blog: https://nadiah.org/

Why is altruism more common in nature than spite? This new paper gives a general mathematical explanation: the degree of negative assortment that can be achieved is constrained in a way that positive assortment is not, particularly in unbalanced populations.

https://www.sciencedirect.com/science/article/pii/S0040580925000668

#cooperation #spite #evolution #evolutionOfCooperation

Analytic solution for the stationary distribution of actions taken in iterated games with implementation errors, and code to automate the solution in SymPy.

https://nadiah.org/2025/11/18/analytic-stationary

#python #cooperation #evolutionOfCooperation #gametheory

I recently read a paper by Kleshnina and others and used it to teach myself some evolutionary game theory techniques.

This is a little obscure, so I'll thread below about why this topic matters for humans and the environment 🧵

https://nadiah.org/2024/11/20/kleshnina_2023

#GameTheory #PrisonersDilemma #iteratedGame #cooperation #EvolutionOfCooperation #Z3 #pyeda #networkx #sympy #SageMath #sustainability

Martin & Lessard (2024) find that assortment generally increases the fixation probability of Cooperation (C), but not if payoffs are multiplicative such that a Defector receives a much larger payoff than C in groups containing a very large number of C individuals.

https://www.sciencedirect.com/science/article/pii/S0022519324001759

#gametheory #EvolutionOfCooperation #SocialDilemma

I'm gonna have to read it more carefully but at first glance this looks like it might be an #EvolutionOfCooperation ground-breaker.

It's worth mentioning that the first thing that occurred to me when I saw this is that money serves this same same social purpose of creating "artificially amplified" incentives for cooperation within a population, but modeling a shared currency as a special case of institutions is actually a better, more generic way to look at it!

https://osf.io/preprints/psyarxiv/uftzb

FREE community #fediscience, please boost!

TONIGHT!!
Everybody is welcome!
Tuesday March 12 6:30pm London time
we have #ShaktiLamba

'Building Well Together'

This is a study of #mutualaid and the #commons in an #Indian Forest-living community with #biologist, #anthropologist and #ecologist Shakti Lamba.

FREE, LIVE @UCLAnthropology and on ZOOM (details below 👇)

http://radicalanthropologygroup.org

Shakti will be speaking in the Daryll Forde Seminar Room, 2nd Floor of the Anthro building. Please use main entrance of the Archaeology Institute in Gordon Square and someone will help direct you across to the Anthro building.

Before her talk, we have a video exhibition documenting the well-building community project, from 5:45 to 6:30pm in Room 129, 1st Floor of UCL Anthro building (underneath Daryll Forde).

#huntergatherers #India #evolutionofcooperation #anthropology

I'm not a fan of Dominic Johnson's Supernatural Punishment Hypothesis. Not actively hostile to it or anything, but it seems kind of just-so as anthropology, and it's even less plausible as a driver of genetic selection.

Anyway TIL that an IPD agent model they did in 2016 to demonstrate it didn't even show the expected selection strength "in silico" and I have to admit I found that funny. 😀 #EvolutionOfCooperation