We conducted large-scale lost letter experiments in Beijing, a megacity with more than 21 million residents, to test if the observed altruistic attribute of the letter recipient would induce more passersby to return the lost letters. The treatment letters were addressed to a nationally renowned...

Does social network structure influence coordination? We examine a coordination game in which each player engages with an exogenously connected “local” subset of the player population, the pattern of links defining a social network. Players know the number of local links they possess but...

This paper investigates social preferences in network games, where the network structure determines whose action affects the payoff of which player. We develop alternative theories that incorporate inequality aversion and welfare preference into the context of network games, and test their...