This paper examines the impact of entry on the structure of the U.S. chemical industries in the period 1963-1982. The paper measures both the immediate impact of entrants in terms of number, size and market shares and their subsequent growth and/or exit. Particular attention is devoted to the...

This article summarizes the patterns of firm entry, growth, and exit in the four-digit U.S. manufacturing industries over the period 1963-1982. Entrants are disaggregated into new firms, existing firms that diversify into an industry by opening new production facilities, and existing firms that...

This article develops a dynamic model of nonprice competition in an oligopolistic industry and uses it to analyze advertising competition in the U.S. cigarette industry. The model generalizes existing studies by allowing advertising to affect both firm market shares and the total size of the...

This publication, which is based on the unique methodology and tools developed for the World Bank Institute/Harvard School of Public Health Flagship Course on Health System Reform and Sustainable Financing, provides a powerful set of resources to help policy makers better navigate the...