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Assessing Competition with the Panzar-Rosse Model: The Role of Scale, Costs, and Equilibrium

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  • Jacob A. Bikker
  • Sherrill Shaffer
  • Laura Spierdijk

Abstract

The Panzar-Rosse model has been widely applied to assess competitive conduct, often in specifications controlling for firm scale or using a price equation. We show that neither a price equation nor a scaled revenue function yields a valid measure for competitive conduct. Moreover, even an unscaled revenue function generally requires additional information about costs and market equilibrium. Our theoretical findings are confirmed by an empirical analysis of competition in banking, using a sample covering more than 110,000 bank-year observations on almost 18,000 banks in 67 countries during 1986-2004.

Suggested Citation

  • Jacob A. Bikker & Sherrill Shaffer & Laura Spierdijk, 2009. "Assessing Competition with the Panzar-Rosse Model: The Role of Scale, Costs, and Equilibrium," CAMA Working Papers 2009-27, Centre for Applied Macroeconomic Analysis, Crawford School of Public Policy, The Australian National University.
    • Handle: RePEc:een:camaaa:2009-27
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    More about this item

    JEL classification:

    • D40 - Microeconomics - - Market Structure, Pricing, and Design - - - General
    • L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms

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