The basic problem in the cooperation theory is to justify the cooperation. Here we propose a new approach, where players are driven by their altruism to cooperate or not. The probability of cooperation depends also on the co-player's reputation. We find that players with positive altruism cooperate and met cooperation. In this approach, payoffs are not relevant. The mechanism is most efficient in the fully connected network.
@article{arxiv.0902.4451,
title = {To cooperate or to defect? Altruism and reputation},
author = {Krzysztof Kulakowski and Przemyslaw Gawronski},
journal= {arXiv preprint arXiv:0902.4451},
year = {2015}
}