Evolution of reciprocity with limited payoff memory

Nikoleta E. Glynatsi, Alex McAvoy and Christian Hilbe

Proc. Roy. Soc. B, 291: 20232493

Biological and Cultural Evolution

• Biological evolution�- No individuals’ cognitive abilities�- payoff -> fitness

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• Cultural evolution�- Individuals need to be aware of the different strategies�- They need to identify those strategies with a higher payoff

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• A large population

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Description of the game dynamics

Probability to cooperate in the first round

Description of the game dynamics

Probability to cooperate in the first round

Description of the evolution dynamics

Stability of cooperative populations

Stability of cooperative populations

For limited memory,

For perfect memory

Evolutionary dynamics of reciprocity

Increasing individual payoff memory