punishment costs. The negative effect of altruism on cooperation and material payoffs is greater the stronger is the reciprocity … embodying both reciprocity and altruism we show that unconditional altruism towards other members attenuates the punishment …Some philosophers and social scientists have stressed the importance for good government of an altruistic citizenry …

social norm of high cooperation. This norm appears to guide subjects' cooperation and punishment choices, including the … key to the quick emergence of an efficient culture of universal cooperation because the more prosocial subjects populate … social norms and the provision of public goods. However, a considerable body of evidence suggests that informal peer …

taxation. In addition, we find that local social interaction among subgroups of participants also boosts cooperation. … "leverage effect" because it transforms modest willingness to cooperate into the larger social dividend from the power of …

dilemma in which self-interest should produce a sub-optimal outcome absent sanctions for non-cooperation. We then test …

The standard method when analyzing the problem of cooperation using evolutionary game theory is to assume that people … illustrate how reputation based choice of opponents can explain both the emergence and deterioration of cooperation. We show that … empirical and experimental evidence of cooperation is consistent with our hypothesis that people behave so as to minimize the …

We analyze a cooperation game in an evolutionary environment. Agents make noisy observations of opponents' propensity … two agents agree to play. Pareto optimal cooperation is evolutionarily stable when reputation perfectly reflects … propensity to cooperate. With some reputation noise, there will be at least some cooperation. Individual concern for reputation …

This baseline report has been developed for an impact evaluation of a social and behaviour change communication (SBCC …

This paper deals with the the evolution of portfolio rules in markets withstationary returns and endogenous prices. …