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A Robust test for Consumer Welfare Enhancing Mergers Among Sellers of a Homogeneous Product

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Author Info

  • Froeb, L.M.
  • Werden, G.J.

Abstract

Antiturst enforcement agencies and courts use net effect on price as a touchstone for the legality of mergers. This paper derives a simple, and completely general, condition for implementing that standard when industry equilibrium is static Nash in qualities (Cournot).

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Bibliographic Info

Paper provided by U.S. Department of Justice - Antitrust Division in its series Papers with number 97-1.

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Length: 3 pages
Date of creation: 1997
Date of revision:
Handle: RePEc:fth:usjuat:97-1

Contact details of provider:
Postal: U.S. DEPARTMENT OF JUSTICE; ANTITRUST DIVISION, JUDICIARY CENTER BUILDING 555 4TH ST. N.W. WASHINGTON D.C. 20001 U.S.A..
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Web page: http://www.justice.gov/atr/
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Keywords: MERGERS;

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References

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Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
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  1. Werden, Gregory J, 1996. "A Robust Test for Consumer Welfare Enhancing Mergers among Sellers of Differentiated Products," Journal of Industrial Economics, Wiley Blackwell, vol. 44(4), pages 409-13, December.
  2. Werden, Gregory J, 1991. "Horizontal Mergers: Comment," American Economic Review, American Economic Association, vol. 81(4), pages 1002-06, September.
  3. Joseph Farrell and Carl Shapiro., 1988. "Horizontal Mergers: An Equilibrium Analysis," Economics Working Papers 8880, University of California at Berkeley.
  4. Werden, G.J., 1996. "A Robust Test for Consumer Welfare Enhancing Mergers Among Sellers of Differentiated Products," Papers 96-01, U.S. Department of Justice - Antitrust Division.
  5. Perry, Martin K & Porter, Robert H, 1985. "Oligopoly and the Incentive for Horizontal Merger," American Economic Review, American Economic Association, vol. 75(1), pages 219-27, March.
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Citations

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Cited by:
  1. Marie Goppelsroeder & Maarten Pieter Schinkel & Jan Tuinstra, 2006. "Quantifying the Scope for Efficiency Defense in Merger Control: The Werden-Froeb-Index," Tinbergen Institute Discussion Papers 06-074/1, Tinbergen Institute.
  2. Braid, Ralph M., 2001. "Cost-reducing horizontal mergers that leave prices unchanged in models of spatial competition," Economics Letters, Elsevier, vol. 71(3), pages 421-427, June.
  3. Louis Kaplow & Carl Shapiro, 2007. "Antitrust," NBER Working Papers 12867, National Bureau of Economic Research, Inc.
  4. Kwang Soo Cheong & Kenneth L Judd, 1997. "Mergers and Dynamic Oligopoly," Working Papers 199714, University of Hawaii at Manoa, Department of Economics.
  5. Hüschelrath, Kai & Müller, Kathrin, 2012. "Market power, efficiencies, and entry: Evidence from an airline merger," ZEW Discussion Papers 12-070, ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research.
  6. Robert Willig, 2011. "Unilateral Competitive Effects of Mergers: Upward Pricing Pressure, Product Quality, and Other Extensions," Review of Industrial Organization, Springer, vol. 39(1), pages 19-38, August.

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