This paper addresses the question of whether our evolutionary history suggests that humans are likely to be individually selected selfish maximizers or group selected altruists. It surveys models from the literature of evolutionary biology in which groups are formed and dissolved and where the...

A popular approach to explain over-contribution in public good games is based on the assumption that people care (either positively or negatively) about the utility of other participants. Over-contribution then is an outcome of utility maximization where utility depends on subjects' own payoffs...

A growing body of economic literature is addressing the incentives of the individuals that take part to the Open Source movement. However, empirical analyses focus on individual developers and neglect firms that do business with Open Source software (OSS). During 2002, we conducted a large-scale...