We consider an infinitely repeated two-person zero-sum game with incomplete information on one side, in which the maximizer is the (more) informed player. Such games have value v\infty (p) for all 0\leqp\leq1. The informed player can guarantee that all along the game the average payoff per stage...

We exhibit a general class of interactive decision situations in which all the agents benefit from more information. This class includes as a special case the classical comparison of statistical experiments à la Blackwell. Copyright Springer-Verlag 2003