We show that in a standard symmetric Cournot duopoly with unknown demand, the optimal information disclosure policy of an informed benevolent planner is to fully inform one of the duopolists and disclose no information to the other one. We discuss possible extensions of the result.

We consider procedures that use randomness to make a decision that involves several individuals. We asked subjects to compare the fairness of six pairs of seemingly equivalent procedures. We propose a classification of subjects into two categories: those who are “emotional” in the sense...

Varian's (Varian, H., 1974. Equity, Envy and Efficiency. Journal of Economic Theory 9, 63-91) main results are not valid anymore if the agents are asymmetrically informed at the time of contracting: 1) envy-freeness and efficiency may be incompatible; 2) there may exist efficient allocation rules...