Review of Industrial Organization

, Volume 7, Issue 1, pp 83–90 | Cite as

Industry performance indices and the economics of information: New perspectives and caveats

  • Michael R. Baye
  • Dennis W. Jansen


Industry indices, be they conduct or performance based, frequently guide government intervention activities and are used for both predictive and prescriptive purposes. Unfortunately, few existing indices of industrial concentration are based on underlying economic theory, and those that are based on theory are based on models of perfect information. We derive a general performance measure relevant for industries that experience imperfect information. We do so by specifying a social welfare function that reflects the objectives of the policymaker and maps characteristics of industry equilibria under uncertainty into a real number that summarizes industry performance. The importance of explicitly accounting for the information structure of an industry is illustrated by deriving a reduced form for the performance measure valid when a monopolist faces random demand.

Key words

Concentration performance index information uncertainty 


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  1. Baye Michael R. (1985) ‘A note on price stability and consumers' welfare’, Econometrica, 53, 213–216.Google Scholar
  2. Blackorby B., Donaldson D. and Weymark J. A. (1982) ‘A normative approach to industrial performance evaluation and concentration indices’, European Economic Review, 19, 89–121.Google Scholar
  3. Dansby R.E. and Willig R. D. (1979) ‘Industry performance gradient indexes’, American Economic Review, 69, 249–260.Google Scholar
  4. Frisch Ragnar (1936) ‘Annual survey of general economic theory: The problem of index numbers’, Econometrica, 4, 1–38.Google Scholar
  5. Hannah L. and Kay J. A. (1977) Concentration in Modern Industry, London, Macmillan.Google Scholar
  6. Lerner A. P. (1934) ‘The concept of monopoly and the measurement of monopoly power’, Review of Economic Studies, 1, 157–75.Google Scholar
  7. Newbery David M. G. and Stiglitz Joseph E. (1981) The Theory of Commodity Price Stabilization, Oxford, Clarendon Press.Google Scholar
  8. Rothschild K. W. (1942) ‘The degree of monopoly’, Economica, 9, 24–39.Google Scholar
  9. Samuelson Paul A. and Swamy S. (1974) ‘Invariant economic index numbers and canonical duality: survey and synthesis’, American Economic Review, 64, 566–593.Google Scholar
  10. Saving T. R. (1970) ‘Concentration ratios and the degree of monopoly’, International Economic Review, 11, 139–146.Google Scholar
  11. Schmalensee Richard (1982) ‘The new industrial organization and the economic analysis of modern markets’, in Werner Hildenbrand (ed.), Advances in Economic Theory, New York, Cambridge University Press, pp. 253–285.Google Scholar
  12. Stigler George J. (1961) ‘The economics of information’, Journal of Political Economy, 69, 213–225.Google Scholar
  13. Stigler George J. (1964) ‘A theory of oligopoly’, Journal of Political Economy, 72, 44–61.Google Scholar
  14. Theil H. (1967) Economics and Information Theory, Amsterdam, North Holland.Google Scholar
  15. Waterson Michael (1984) Economic Theory of the Industry, New York, Cambridge University Press.Google Scholar

Copyright information

© Kluwer Academic Publishers 1992

Authors and Affiliations

  • Michael R. Baye
    • 1
  • Dennis W. Jansen
    • 2
  1. 1.Department of EconomicsPennsylvania State UniversityUniversity ParkU.S.A.
  2. 2.Department of EconomicsTexas A&M University, and Indiana UniversityBloomingtonU.S.A.

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