criteria. A first result is that, in a one-shot context, favoritism turns the asymmetric information (private cost) procurement … favoritism substantially facilitates collusion. It increases the gains from collusion and contributes to solving basic …), favoritism only partially shades the cartel from the environment. We thus find that favoritism generally facilitates collusion at …

This paper investigates links between corruption and collusion in procurement. A first-price multiple-object auction is … auction designers, competition authorities and criminal courts is that risks of collusion and of corruption must be addressed …) provides a mechanism to enforce collusion. A second result is that package bidding can facilitate collusion. We also find that …

We study the effect of cheap talk between bidders on the outcome of a first-price procurement game with N sellers in … decrease with collusion, and the ex-ante surplus increases with the amount of information revealed in equilibrium. This is …

We consider a second price auction between bidders with independently and identically distributed valuations, where a … grand coalition is a known result. Finally, we study collusion in auctions as a mechanism design problem, insisting on the …

and public signals. We show that competition leads the two firms to invest too early and analyze collusion schemes whereby … one firm prevents the other firm from entering the market. We show that, in the efficient collusion scheme, the active …