Altruism among Simple and Smart Vampires

In this work, we present a simulation study drawn upon a famous ethological example: food-sharing habit of vampire bats in Central America. A norm of reciprocity is introduced when agents are expected to exhibit a cooperative behavior under serious environmental strictures (infrequent but lethal food scarcity). We compare different agents' architectures (with different levels of cognitive complexity) in the evolution of food-sharing habit and we analyze their performances against the presence of cheaters in the population. The experiments are aimed at studying the role of cognitive mediators (i.e. goals) in spreading altruism, described as a purposeful action.

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