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Quality Adjustment at Scale: Hedonic vs. Exact Demand-Based Price Indices

Author

Listed:
  • Gabriel Ehrlich
  • John C. Haltiwanger
  • Ron S. Jarmin
  • David Johnson
  • Ed Olivares
  • Luke W. Pardue
  • Matthew D. Shapiro
  • Laura Zhao

Abstract

This paper explores alternative methods for adjusting price indices for quality change at scale. These methods can be applied to large-scale item-level transactions data that includes information on prices, quantities, and item attributes. The hedonic methods can take into account the changing valuations of both observable and unobservable characteristics in the presence of product turnover. The paper also considers demand-based approaches that take into account changing product quality from product turnover and changing appeal of continuing products. The paper provides evidence of substantial quality-adjustment in prices for a wide range of goods, including both high-tech consumer products and food products.

Suggested Citation

  • Gabriel Ehrlich & John C. Haltiwanger & Ron S. Jarmin & David Johnson & Ed Olivares & Luke W. Pardue & Matthew D. Shapiro & Laura Zhao, 2023. "Quality Adjustment at Scale: Hedonic vs. Exact Demand-Based Price Indices," NBER Working Papers 31309, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:31309
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    References listed on IDEAS

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    More about this item

    JEL classification:

    • C81 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Methodology for Collecting, Estimating, and Organizing Microeconomic Data; Data Access
    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation

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