Evolutionary dynamics under perfect and limited payoff memory. Credit: Proceedings of the Royal Society B: Biological Sciences (2024). DOI: 10.1098/rspb.2023.2493 Direct reciprocity facilitates cooperation in repeated social interactions. Traditional models suggest that individuals learn to adopt conditionally cooperative strategies if they have multiple encounters with their partner. However, most existing models make rather strong assumptions about how individuals decide to keep or change their strategies. They assume individuals make these decisions based on a strategy’s average performance. This in turn suggests that individuals would remember their exact payoffs against everyone Read More