An important aspect of corporate governance is the assessment of managers. When managers vary in ability, determining who is good and who is not is vital. Moreover, knowing they will be assessed can lead those being assessed to behave in ways that make them appear better. Such signal-jamming...

In a general framework with independent private values of the bidders, we propose a game, with a simple economic interpretation, that allows implementing the optimal auction outcome when the seller ignores the distributions of the different bidders' valuations. In this robust or detail-free...