This lecture on entry is a transcript of a second-year MBA class at the Stephen M. Ross School of Business, University of Michigan. At various points, student comments and comments by Francine Lafontaine, the co-teacher of this course, appear. Accompanying this lecture are the PowerPoint slides...

Movements in total quantity and in quality-adjusted price suggest a supply-side shock in the American automobile market in 1955. This paper tests the hypothesis that the shock was a transitory change in industry conduct, a price war. The key ingredients of the test are alternative equilibrium...

This paper develops new empirical models of market concentration from game-theoretic models of entry. The authors construct their models from inequality conditions that describe entrants' equilibrium strategies in simultaneous-move and sequential-move games, and use them to study the effects of...

The authors examine thirty years of computer industry market structure. Their analysis explains the persistence of dominant computer firms, their recent decline, and the changing success of competitive entry. It emphasizes the importance of technological competition between computer 'platforms,'...