the same time, exerts negative externalities on the non-acquiring bidders. Both the bidders' valuations of the good and …

bids become due. It is shown that when bidders experience identity dependent externalities and auction participation is … exogenous, then for a large class of standard auction mechanisms, a policy of revelation serves to realize a higher surplus … auction allocation in a more ex-post efficient manner. Furthermore, it is shown that the policy of revelation increases both …