a tempting and profitable action for the Receiver. The results from our online experiment (N = 1,512) show that Senders …

has moral preferences with a morality parameter equal to the level of assortment - is evolutionarily stable, while … preferences that lead to different behaviour are unstable. Together with their claim that altruistic and moral preferences differ … Hamiltonensis to satisfy the definition when the set of equilibria is empty, and their equilibrium behaviour is not determined. If …

a better match with actual human behaviour, including ingredients of morality such as honesty, responsibility, and … equilibrium in prisoners' dilemmas or public goods games. We suggest that in order to understand human morality, and human … prosocial behaviour, we should look at reasons why evolution made us not play the subgame perfect Nash equilibrium in sequential …

Netherlands and the US covering altruistic behaviour and reciprocity outside the lab. The results largely carry over. We argue …