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Consumers’ heterogeneity and prices in a CES -model of monopolistic competition

P. 147-154.

We extend the Dixit and Stiglitz set-up by introducing consumer heterogeneity into a general equilibrium model of monopolistic competition. By getting a closedform solution for a symmetric equilibrium, we show how the market outcome depends on the joint distribution of tastes and labor productivities of consumers. In contrast to the traditional framework, the model predicts that the short-run equilibrium price may vary with the number of firms, demonstrating both anti- and procompetitive behavior, which is in accordance with economic intuition and empirical evidence.