AN EXTENSION OF LERNER'S MONOPOLY INDEX FOR MARKETS WITH A DISPARITY BETWEEN LONG‐ AND SHORT‐RUN DEMAND ELASTICITIES

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Abstract

This paper develops a theoretical analysis of steady state monopoly pricing in markets with a disparity between long‐ and short‐run demand elasticities, based on a separation between the long‐run demand schedule and the adjustment process that underlies actual demand levels. This sheds light, in a practical context, on the impact of the speed of adjustment and the firm's discount rate on its equilibrium markup; and on the measurement of realized monopoly power. An illustrative application of the analysis to existing empirical data supplements the theoretical presentation.

Original languageEnglish
Pages (from-to)681-694
Number of pages14
JournalEconomic Inquiry
Volume25
Issue number4
DOIs
StatePublished - 1 Jan 1987

ASJC Scopus subject areas

  • Business, Management and Accounting (all)
  • Economics and Econometrics

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