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A model of commodity prices after Sir Arthur Lewis

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  • Deaton, Angus
  • Laroque, Guy

Abstract

We develop an idea from Arthur Lewis' paper on unlimited supplies of labor to model the long run behavior of the prices of primary commodity produced by poor countries. Commodity supply is assumed infinitely elastic in the long run, and the rate of growth of supply responds to the excess of the current price over the long run supply price. Demand is linked to the level of world income and to the price of the commodity, so that price is stationary around its supply price, and commodity supply and world income are cointegrated. The model is fitted to long-run historical data.
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Suggested Citation

  • Deaton, Angus & Laroque, Guy, 2003. "A model of commodity prices after Sir Arthur Lewis," Journal of Development Economics, Elsevier, vol. 71(2), pages 289-310, August.
  • Handle: RePEc:eee:deveco:v:71:y:2003:i:2:p:289-310
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    References listed on IDEAS

    as
    1. Angus Deaton & Guy Laroque, 1992. "On the Behaviour of Commodity Prices," Review of Economic Studies, Oxford University Press, vol. 59(1), pages 1-23.
    2. Engle, Robert & Granger, Clive, 2015. "Co-integration and error correction: Representation, estimation, and testing," Applied Econometrics, Publishing House "SINERGIA PRESS", vol. 39(3), pages 106-135.
    3. Grilli, Enzo R & Yang, Maw Cheng, 1988. "Primary Commodity Prices, Manufactured Goods Prices, and the Terms of Trade of Developing Countries: What the Long Run Shows," World Bank Economic Review, World Bank Group, vol. 2(1), pages 1-47, January.
    4. Deaton, Angus & Laroque, Guy, 1996. "Competitive Storage and Commodity Price Dynamics," Journal of Political Economy, University of Chicago Press, vol. 104(5), pages 896-923, October.
    5. Harold Hotelling, 1931. "The Economics of Exhaustible Resources," Journal of Political Economy, University of Chicago Press, vol. 39, pages 137-137.
    6. Robert Halvorsen & Tim R. Smith, 1991. "A Test of the Theory of Exhaustible Resources," The Quarterly Journal of Economics, Oxford University Press, vol. 106(1), pages 123-140.
    7. Lewis Cecil Gray, 1914. "Rent under the Assumption of Exhaustibility," The Quarterly Journal of Economics, Oxford University Press, vol. 28(3), pages 466-489.
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    More about this item

    JEL classification:

    • E3 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles
    • F1 - International Economics - - Trade
    • O1 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development

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