We examine the decision to advertise a homogenous good. We show that the likelihood of inefficiently low advertising rests heavily on how one models the mechanism by which advertising affects demand. Regardless of this mechanism, however, there is always a lower bound of concentration below...

This paper examines the role of patent policy in a spatial model of sequential innovation. Initial entrepreneurs develop a new product market and anticipate that subsequent innovation may lead to a product line that consumers value more highly. The likelihood of sequential innovation increases...

This paper analyses mergers by Cournot firms producing differentiated products in a spatial market with product licensing by the merged firms. Product licensing allows the merged firms to co-ordinate their locations. If the degree of differentiation is not 'too low', a two-firm merger is more...

Cost synergies are an explicitly recognized justification for a two-firm merger, and empirical techniques are now widely used to assess the impact of cost-reducing mergers on prices and welfare in the post-merger market. We show that if the merger occurs in a vertically product differentiated...

We analyze the interaction between entrepreneurs who open new markets and established, `fast second' firms to develop them. We use a spatially differentiated model in which early entry is traditionally excessive. However, the anticipated later entry by the `fast second' brand can potentially...

The rise of managed healthcare organizations (MCOs) and the associated increased integration among providers has transformed US healthcare and at the same time raised antitrust concern. This paper examines how competition among MCOs affects the efficiency gains of improved price coordination...

This paper examines the relationship between a differentiated downstream market and a specialized upstream market. We analyze three different types of vertical relation between the upstream and downstream sectors when the upstream market supplies specialized and complementary inputs to a...

Recent empirical studies point to the need for a model of bilateral market power between health plans and provider organizations. We develop such a model and use it to analyze the impact on cost and access of alternative contractual relationships between plans and providers. The plans...

Cost synergies are an explicitly recognized justification for a two-firm merger and empirical techniques are now widely used to assess the impact of cost-reducing mergers on prices and welfare in the postmerger market. We show that if the merger occurs in a vertically product differentiated...