<Para ID="Par1">A principal uses security bid auctions to award an incentive contract to one among several agents in the presence of hidden action and hidden information. Securities range from cash to equity and call options. “Steeper” securities are better surplus extractors, yet reduce effort incentives....</para>

This is a detailed introduction to auction theory. It begins with a simple analysis of standard auctions and then uses a strikingly simple general solution of symmetric private values auctions to prove the payoff equivalence of many auction rules. The basic framework is then modified to admit...

This paper proposes a contract theory of wage-price indexation, assuming labor contracts that stipulate labor time and workers' renumeration and an economy subject to real and monetary disturbances. Novel features are the analysis of indexation as a statistical inference problem and the modeling...

We reconsider the justifications of the R&D subsidies of Spencer and Brander (1983), by allowing firms to form a research joint venture (RJV) and license innovations. If governments offer unconditional subsidies, an RJV is formed and the strategic benefits of R&D subsidies vanish. Nevertheless,...

This paper analyzes a simple, repeated game of simultaneous entry and pricing. We report a surprising property of the symmetric equilibrium solution: If the number of potential competitors is increased above two, the market breaks down with higher probability, and the competitive outcome becomes...

In their seminal solution of the chain store paradox Kreps and Wilson assumed that the incumbent monopolist is predisposed, with a small probability, to fight entry. Milgrom and Roberts suggested to view this predisposition to fight as a result of precommitment to an aggressive course of action....

We consider an augmented version of the symmetric private value auction model with independent types. The augmentation, intended to illustrate reality, concerns information bidders have about their opponents. To the standard assumption that every bidder knows his type and the distribution of...