This note considers the effects of altruism on cooperation in the context of a repeated Prisoner's Dilemma. Altruism has two conflicting impacts on cooperation: One is to reduce the temptation for defection the other is to make the future punishment ineffective. The total effect of altruism...

This note considers the effects of altruism on cooperation in the context of a repeated Prisoner's Dilemma. Altruism has two conflicting impacts on cooperation: One is to reduce the temptation for defection the other is to make the future punishment ineffective. The total effect of altruism...

Individuals make consumption choices relating to living styles, travelling or in preferring products or services over others. The median individual's willingness to align with a cooperative group and to bear the costs that would accrue distant benefits, and having a sizable number of such...