Antitrust & Competition Policy Blog

Editor: D. Daniel Sokol
University of Florida
Levin College of Law

Thursday, July 12, 2018

Product Differentiation with Multiple Qualities

Francesca Barigozzi (Department of Economics, University of Bologna) and Ching-to Albert Ma (Boston University) explore Product Differentiation with Multiple Qualities.

ABSTRACT: We study subgame-perfect equilibria of the classical quality-price, multistage game of vertical product differentiation. Each firm can choose the levels of an arbitrary number of qualities. Consumers' valuations are drawn from independent and general distributions. The unit cost of production is increasing and convex in qualities. We characterize equilibrium prices, and the effects of qualities on the rival's equilibrium price in the general model. We present necessary and sufficient conditions for equilibrium differentiation in any of the qualities.

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