I study Cournot competition under incomplete information about demand while assuming that market price must be non-negative for all demand realizations. Although this assumption is very natural, it has only rarely been made in the earlier literature. Yet it has important economic consequences:...

Three years ago, the Antitrust Division and the Federal Trade Commission revised their Horizontal Merger Guidelines to articulate in greater detail how they would treat claims of efficiencies associated with horizontal mergers: claims that are frequently made, as for instance in the recently...

We present a method to calibrate empirically the demand parameters in a merger simulation model by using brand-level profit margin data. While the approach can be generalized, we develop these ideas within a particular framework the PCAIDS (proportionality- calibrated AIDS) model. We show that...

This paper analyzes if vertical foreclosure can emerge as an equilibrium outcome of an infinitely repeated game. Foreclosure is profitable due to a 'raising rival's costs' effect but it is not a Nash equilibrium of the static game. The results are that foreclosure is in fact a subgame perfect...

A number of private colleges and universities have chosen not to compete for students by offering merit-based financial aid. In addition, until 1990 many of these schools jointly calculated a student's financial need. I theoretically and empirically analyze the effects of different financial aid...

Platform sharing across manufacturers has recently become common practice in the automobile industry. Its important objective is to reduce procurement costs by taking advantage of the commonality of components, but this often reduces the degree of product differentiation. We investigate this...

Merger simulation is growing in importance as a tool to evaluate the unilateral competitive effects of mergers. This paper offers a relatively non-technical description of the principles of merger simulation. In addition, it introduces PCAIDS, a new and highly flexible "calibrated-demand" merger...

Antimonopoly laws must contain effective provisions for the attack of exclusionary behavior by firms with market power while at the same time not attacking procompetitive behavior by entrants or incumbents. This paper suggests seven textual criteria by which a new law may be evaluated in its...

The first generaation of competition laws in Central and Eastern Europe -- enacted in 1990 and 1991 in Czechoslovakia, Hungary, Poland, and Russia -- have undergone significant amendments following their earliest enforcement period. This paper uses an analytical framework previously used to...

The creation of electricity markets has raised the fundamental question as to whether markets provide the right incentives for the provision of the reserves needed to maintain system reliability, or whether some form of regulation is needed. In some states in the US, electricity retailers have...