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Analysis of Price Level Heterogeneity across Households based on the Geary-Khamis Price Index


  • Abe, Naohito
  • Shiotani, Kyosuke


We construct a household price index based on household-level scanner data (homescan data). Instead of the conventional Paasche type price index, in this paper, we apply the Geary-Khamis (GK) method that is commonly used to measure the values of different currencies in international trade. The mathematical properties of the GK price index help identify the complex factors behind household-level price differentials. We ?d that households that buy cereals, manufactured foods, and daily products at weekend bargain rates, reduce their price levels signi?antly. Further, households with children make purchases at lower prices than households without children through frequent bulk purchases at bargain sales. Certain types of shopping behaviors of the elderly lead them to make purchases at higher prices than the young. Speci?ally, shopping at specialized stores, not shopping at home improvement stores, spending less on Sundays, and purchasing the same goods repeatedly increase the price levels for the elderly.

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  • Abe, Naohito & Shiotani, Kyosuke, 2014. "Analysis of Price Level Heterogeneity across Households based on the Geary-Khamis Price Index," Research Center for Price Dynamics Working Paper Series 11, Research Center for Price Dynamics, Institute of Economic Research, Hitotsubashi University.
  • Handle: RePEc:hit:rcpdwp:11

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    1. Michael R. Baye & John Morgan & Patrick Scholten, 2004. "Price Dispersion In The Small And In The Large: Evidence From An Internet Price Comparison Site," Journal of Industrial Economics, Wiley Blackwell, vol. 52(4), pages 463-496, December.
    2. Mark Aguiar & Erik Hurst, 2007. "Life-Cycle Prices and Production," American Economic Review, American Economic Association, vol. 97(5), pages 1533-1559, December.
    3. Haskel, Jonathan & Wolf, Holger, 2001. " The Law of One Price--A Case Study," Scandinavian Journal of Economics, Wiley Blackwell, vol. 103(4), pages 545-558, December.
    4. Emi Nakamura & Jón Steinsson, 2008. "Five Facts about Prices: A Reevaluation of Menu Cost Models," The Quarterly Journal of Economics, Oxford University Press, vol. 123(4), pages 1415-1464.
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