Aggregate Industry Behaviour in a Monopolistic Competition Model with Heterogeneous Firms
AbstractThe paper analyses how a tractable representation of productivity heterogeneity among firms modifies the standard Dixit-Stiglitz (DS) model of monopolistic competition. The properties of the asymmetric model are explored by comparative statics analysis. The equilibrium adjustments of industry aggregates, such as the number of firms, output and the productivity of variable inputs are compared with the corresponding adjustments in the symmetric model. The analysis thereby clarifies when and why the standard DS model may provide a misleading picture of the aggregate industry behaviour. A by-product of the paper is to demonstrate that a more realistic description of a basic aspect of technology heterogeneity can be taken into account at a relatively low cost in terms of reduced tractability.
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Bibliographic InfoPaper provided by Research Department of Statistics Norway in its series Discussion Papers with number 352.
Date of creation: Jun 2003
Date of revision:
Monopolistic competition; productivity heterogeneity; aggregation;
Find related papers by JEL classification:
- L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
- L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
- L16 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Industrial Organization and Macroeconomics; Macroeconomic Industrial Structure
This paper has been announced in the following NEP Reports:
- NEP-MIC-2003-09-14 (Microeconomics)
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