We consider games where an analyst is not confident about players' true information structure for payoff-relevant parameters. We define a robust prediction by a set of action profiles such that, given any information structure among the players, there is a Bayesian Nash equilibrium given that...

Mean-preserving contractions are critical for studying Bayesian models of information design. We introduce the class of bi-pooling policies, and the class of bi-pooling distributions as their induced distributions over posteriors. We show that every extreme point in the set of all...