A recipient of a good deed might repay it to others, instead of to the original donor. We use a lab experiment with naturally-occurring social connections to investigate whether and how the social connection between the donor and the third-party beneficiary spillover to affect the recipient's...

Bilateral gift exchange often benefits the gift-giver, but what is the effect of multilateral gift exchange? This study employs a two-giver-one-recipient real task gift exchange game to investigate the effect of gift competition. We show that gift competition hurts givers and benefits...

Efficient coordination in large groups is a fundamental issue in economic organizations. We consider the weak-link game with the feature of economies of scale that is necessary for voluntary group growth, in a minimal setup with exit and merger options that allows for bi-directional changes in...