In a range of settings, private firms manage peer effects by sorting agents into different groups, be they schools, communities, or product categories. This paper considers such a firm, which controls group entry by setting a series of anonymous prices. We show that private provision...

This study revisits the problem of the tragedy of the commons. Extracting agents participate in an evolutionary game in a complex social network and are subject to social pressure if they do not comply with the social norms. Social pressure depends on the dynamics of the resource, the network...

Im Enzyklopädieprojekt Wikipedia kooperieren hunderttausende Menschen; sie kommen mit einem minimalen Aufwand an Koordination aus. Das Ergebnis ist ein öffentliches Gut, das oft sogar traditionellen Nachschlagewerken überlegen ist. Klassische Theorien der Kooperation, wie Eigennutz oder...