We study the effect of the addition of a futures market, in which contracts maturing in the last period of the life of the asset can be traded. Our experiment has two treatments, one in which a spot market operates on its own, and a second treatment in which a spot and futures market are active...

We study whether group identity mitigates inefficiencies associated with appropriable quasi-rents, which are often created by relationship-specific investments in bilateral trade relationships. We conjecture that group identity strengthens the effect of an agent's generous action in increasing...