Correlated information, mechanism design and informational rents

نویسنده

  • Sérgio O. Parreiras
چکیده

The optimal mechanism literature shows that the principal can extract all the equilibrium payoffs at a given Bayesian Game when the players’ information is correlated. For this result to hold, the principal needs to know how informative are the agents’ signals. If the principal does not know how noisy the signal of a player is, or equivalently, when the signals available to a player can be ranked in order of informativeness by Blackwell’s criterion, any informational rents obtained at the game are left to the players. Conversely, whenever the optimal mechanism leaves a positive surplus to some player, it is always possible to interpret the model as if, the principal were uncertain regarding how noisy is the signal of that player. Finally, although signals may be highly correlated, Blackwell’s ranking implies that the degree of informativeness of a player’s signal ought to be independent on the degree of informativeness of others’ signals. JEL Classification Numbers: C72, D44, D82.

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عنوان ژورنال:
  • J. Economic Theory

دوره 123  شماره 

صفحات  -

تاریخ انتشار 2005