Equilibrium design in an n -player quadratic game

As in public good provisions, in a public bad situation such as abatement, the non-cooperative interplay of the participants typically results in low levels of quantities (provision or abatement). In a simple class of n -person quadratic games, we show how Coarse correlated equilibria , using simple mediation devices, can significantly outperform Nash equilibrium outcomes in terms of a stated policy objective.