We use experiments to study the efficiency effects for a market as a whole of adding the possibility of forward contracting to a pre-existing spot market. We deal separately with the cases where spot market competition is in quantities and where it is in supply functions. In both cases we...

The tension between cooperation and competition that characterizes many business relationships is experimentally studied in a 'pie'-creation game; value is created and increased through cooperation in a repeated prisoner's dilemma game. At the end, the player with the greater stake in the joint...

We study the effects of competition in a context in which people's actions can not be contractually fixed. We find that in such an environment the very presence of competition does neither increase efficiency nor does it yield any payoff gains for the short side of the market. We also find that...