Informed-principal problems in environments with generalized private values

We provide a solution to the problem of mechanism selection by a privately informed principal in generalized-private-value environments. In a broad class of these environments, the mechanism-selection game has a perfect-Bayesian equilibrium that has a strong neologism-proofness property. Equilibrium allocations that satisfy this property are characterized in terms of the players' incentive and participation constraints, and can be computed using standard methods.