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The Law of One Food Price

Author

Listed:
  • Kenneth W. Clements

    (The University of Western Australia)

  • Jiawei Si

    (The University of Western Australia)

  • Hai Long Vo

    (The University of Western Australia
    Quy Nhon University)

Abstract

Are food prices more or less equalised across countries? In view of various barriers to trade (both naturally occurring and of a man-made nature) and currency gyrations, the answer would seem to be an unambiguous “No”, but we show this question is worthy of further investigation. In order for the law of one price (LOP) to hold, domestic prices must respond one-for-one to changes in world prices and exchange rates, but this is usually prevented by variations in mark-ups and/or trade barriers. We use data on producer prices from the Food and Agriculture Organization to test for the LOP. The results give surprising support to the LOP: Market wedges appear to be insufficiently important to prevent food prices equalising over the longer term. The law of one food price seems to hold, at least as a first approximation.

Suggested Citation

  • Kenneth W. Clements & Jiawei Si & Hai Long Vo, 2023. "The Law of One Food Price," Open Economies Review, Springer, vol. 34(1), pages 195-216, February.
    • Handle: RePEc:kap:openec:v:34:y:2023:i:1:d:10.1007_s11079-022-09671-9
    DOI: 10.1007/s11079-022-09671-9
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    1. James R. Lothian & Mark P. Taylor, 2008. "Real Exchange Rates Over the Past Two Centuries: How Important is the Harrod‐Balassa‐Samuelson Effect?," Economic Journal, Royal Economic Society, vol. 118(532), pages 1742-1763, October.
    2. Ina Simonovska, 2009. "Income Differences and Prices of Tradables," 2009 Meeting Papers 692, Society for Economic Dynamics.
    3. Luckstead, Jeff, 2018. "Asymmetric Exchange Rate Pass-Through In U.S. Imports Of Cocoa," Journal of Agricultural and Applied Economics, Cambridge University Press, vol. 50(3), pages 369-386, August.
    4. Crucini, Mario J. & Shintani, Mototsugu, 2008. "Persistence in law of one price deviations: Evidence from micro-data," Journal of Monetary Economics, Elsevier, vol. 55(3), pages 629-644, April.
    5. Jean Imbs & Haroon Mumtaz & Morten O. Ravn & Hélène Rey, 2005. "PPP Strikes Back: Aggregation And the Real Exchange Rate," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 120(1), pages 1-43.
    6. David S. Jacks & Kevin H. O'Rourke & Jeffrey G. Williamson, 2011. "Commodity Price Volatility and World Market Integration since 1700," The Review of Economics and Statistics, MIT Press, vol. 93(3), pages 800-813, August.
    7. Ozge Senay & Alan Sutherland, 2015. "Local Currency Pricing, Foreign Monetary Shocks and Exchange Rate Policy," Open Economies Review, Springer, vol. 26(4), pages 633-661, September.
    8. Ana María Iregui & Jesús Otero, 2017. "Testing for spatial market integration: evidence for Colombia using a pairwise approach," Agricultural Economics, International Association of Agricultural Economists, vol. 48(6), pages 743-753, November.
    9. Alberto Cavallo & Brent Neiman & Roberto Rigobon, 2014. "Currency Unions, Product Introductions, and the Real Exchange Rate," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 129(2), pages 529-595.
    10. Lothian, James R., 2016. "Purchasing power parity and the behavior of prices and nominal exchange rates across exchange-rate regimes," Journal of International Money and Finance, Elsevier, vol. 69(C), pages 5-21.
    11. Kenneth Rogoff, 1996. "The Purchasing Power Parity Puzzle," Journal of Economic Literature, American Economic Association, vol. 34(2), pages 647-668, June.
    12. Alberto Cavallo & Roberto Rigobon, 2016. "The Billion Prices Project: Using Online Prices for Measurement and Research," Journal of Economic Perspectives, American Economic Association, vol. 30(2), pages 151-178, Spring.
    13. Jörg Breitung & Bertrand Candelon, 2005. "Purchasing Power Parity during Currency Crises: A Panel Unit Root Test under Structural Breaks," Review of World Economics (Weltwirtschaftliches Archiv), Springer;Institut für Weltwirtschaft (Kiel Institute for the World Economy), vol. 141(1), pages 124-140, April.
    14. Alan M. Taylor & Mark P. Taylor, 2004. "The Purchasing Power Parity Debate," Journal of Economic Perspectives, American Economic Association, vol. 18(4), pages 135-158, Fall.
    15. Engel, Charles & Rogers, John H, 1996. "How Wide Is the Border?," American Economic Review, American Economic Association, vol. 86(5), pages 1112-1125, December.
    16. Jeffrey Frankel & David Parsley & Shang-Jin Wei, 2012. "Slow Pass-through Around the World: A New Import for Developing Countries?," Open Economies Review, Springer, vol. 23(2), pages 213-251, April.
    17. Pinelopi Koujianou Goldberg & Michael M. Knetter, 1997. "Goods Prices and Exchange Rates: What Have We Learned?," Journal of Economic Literature, American Economic Association, vol. 35(3), pages 1243-1272, September.
    18. Forbes, Kristin & Hjortsoe, Ida & Nenova, Tsvetelina, 2018. "The shocks matter: Improving our estimates of exchange rate pass-through," Journal of International Economics, Elsevier, vol. 114(C), pages 255-275.
    19. Choi, In, 2001. "Unit root tests for panel data," Journal of International Money and Finance, Elsevier, vol. 20(2), pages 249-272, April.
    20. Bela Balassa, 1964. "The Purchasing-Power Parity Doctrine: A Reappraisal," Journal of Political Economy, University of Chicago Press, vol. 72(6), pages 584-584.
    21. John Baffes, 1991. "Some Further Evidence on the Law of One Price: The Law of One Price Still Holds," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 73(4), pages 1264-1273.
    22. Feenstra, Robert C. & Kendall, Jon D., 1997. "Pass-through of exchange rates and purchasing power parity," Journal of International Economics, Elsevier, vol. 43(1-2), pages 237-261, August.
    23. Ina Simonovska, 2015. "Income Differences and Prices of Tradables: Insights from an Online Retailer," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 82(4), pages 1612-1656.
    24. Yu-Chin Chen & Kenneth S. Rogoff & Barbara Rossi, 2010. "Can Exchange Rates Forecast Commodity Prices?," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 125(3), pages 1145-1194.
    25. Pedroni, Peter, 2004. "Panel Cointegration: Asymptotic And Finite Sample Properties Of Pooled Time Series Tests With An Application To The Ppp Hypothesis," Econometric Theory, Cambridge University Press, vol. 20(3), pages 597-625, June.
    26. Cathy L. Jabara & Nancy E. Schwartz, 1987. "Flexible Exchange Rates and Commodity Price Changes: The Case of Japan," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 69(3), pages 580-590.
    27. Burstein, Ariel & Gopinath, Gita, 2014. "International Prices and Exchange Rates," Handbook of International Economics, in: Gopinath, G. & Helpman, . & Rogoff, K. (ed.), Handbook of International Economics, edition 1, volume 4, chapter 0, pages 391-451, Elsevier.
    28. Pesaran, H. Hashem & Shin, Yongcheol, 1998. "Generalized impulse response analysis in linear multivariate models," Economics Letters, Elsevier, vol. 58(1), pages 17-29, January.
    29. Lothian, James R & Taylor, Mark P, 1996. "Real Exchange Rate Behavior: The Recent Float from the Perspective of the Past Two Centuries," Journal of Political Economy, University of Chicago Press, vol. 104(3), pages 488-509, June.
    30. Kunkler, Michael & MacDonald, Ronald, 2015. "Half-lives of currencies and aggregation bias," Economics Letters, Elsevier, vol. 135(C), pages 58-60.
    31. M. Hashem Pesaran, 2007. "A simple panel unit root test in the presence of cross-section dependence," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 22(2), pages 265-312.
    32. Stefano DellaVigna & Matthew Gentzkow, 2019. "Uniform Pricing in U.S. Retail Chains," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 134(4), pages 2011-2084.
    33. Joakim Westerlund, 2007. "Testing for Error Correction in Panel Data," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 69(6), pages 709-748, December.
    34. Hellerstein, Rebecca, 2008. "Who bears the cost of a change in the exchange rate? Pass-through accounting for the case of beer," Journal of International Economics, Elsevier, vol. 76(1), pages 14-32, September.
    35. Gopinath, G. & Helpman, . & Rogoff, K. (ed.), 2014. "Handbook of International Economics," Handbook of International Economics, Elsevier, edition 1, volume 4, number 4.
    36. Bjørnland, Hilde C., 2009. "Monetary policy and exchange rate overshooting: Dornbusch was right after all," Journal of International Economics, Elsevier, vol. 79(1), pages 64-77, September.
    37. Parsley, David C. & Wei, Shang-Jin, 2001. "Explaining the border effect: the role of exchange rate variability, shipping costs, and geography," Journal of International Economics, Elsevier, vol. 55(1), pages 87-105, October.
    38. Yu-Hsi Chou, 2017. "Dissecting Exchange Rates and Fundamentals in the Modern Floating Era: The Role of Permanent and Transitory Shocks," Review of International Economics, Wiley Blackwell, vol. 25(1), pages 165-194, February.
    39. Mark, Nelson C. & Choi, Doo-Yull, 1997. "Real exchange-rate prediction over long horizons," Journal of International Economics, Elsevier, vol. 43(1-2), pages 29-60, August.
    40. Cheung, Yin-Wong & Lai, Kon S. & Bergman, Michael, 2004. "Dissecting the PPP puzzle: the unconventional roles of nominal exchange rate and price adjustments," Journal of International Economics, Elsevier, vol. 64(1), pages 135-150, October.
    41. Alan M. Taylor & Mark P. Taylor, 2004. "The Purchasing Power Parity Debate," Journal of Economic Perspectives, American Economic Association, vol. 18(4), pages 135-158, Fall.
    42. Long H. Vo, 2018. "Why don’t agricultural prices always adjust towards parity?," Economics Discussion / Working Papers 18-09, The University of Western Australia, Department of Economics.
    43. Froot, Kenneth A. & Rogoff, Kenneth, 1995. "Perspectives on PPP and long-run real exchange rates," Handbook of International Economics, in: G. M. Grossman & K. Rogoff (ed.), Handbook of International Economics, edition 1, volume 3, chapter 32, pages 1647-1688, Elsevier.
    44. Hatzenbuehler, Patrick L. & Abbott, Philip C. & Foster, Kenneth A., 2016. "Agricultural Commodity Prices and Exchange Rates under Structural Change," Journal of Agricultural and Resource Economics, Western Agricultural Economics Association, vol. 41(2), May.
    45. Pesaran, M. Hashem & Shin, Yongcheol, 1996. "Cointegration and speed of convergence to equilibrium," Journal of Econometrics, Elsevier, vol. 71(1-2), pages 117-143.
    46. Kao, Chihwa, 1999. "Spurious regression and residual-based tests for cointegration in panel data," Journal of Econometrics, Elsevier, vol. 90(1), pages 1-44, May.
    47. Frenkel, Jacob A., 1978. "Purchasing power parity : Doctrinal perspective and evidence from the 1920s," Journal of International Economics, Elsevier, vol. 8(2), pages 169-191, May.
    48. Mohsen Bahmani-Oskooee & Tsung-Pao Wu, 2018. "PPP in the 34 OECD countries: evidence from quantile-based unit root tests with both smooth and sharp breaks," Applied Economics, Taylor & Francis Journals, vol. 50(23), pages 2622-2634, May.
    49. G. M. Grossman & K. Rogoff (ed.), 1995. "Handbook of International Economics," Handbook of International Economics, Elsevier, edition 1, volume 3, number 3.
    50. Fackler, Paul L. & Goodwin, Barry K., 2001. "Spatial price analysis," Handbook of Agricultural Economics, in: B. L. Gardner & G. C. Rausser (ed.), Handbook of Agricultural Economics, edition 1, volume 1, chapter 17, pages 971-1024, Elsevier.
    51. Rabe, Collin & Waddle, Andrea, 2020. "The evolution of purchasing power parity," Journal of International Money and Finance, Elsevier, vol. 109(C).
    52. D. Miljkovic & R. Zhuang, 2011. "The exchange rate pass-through into import prices: the case of Japanese meat imports," Applied Economics, Taylor & Francis Journals, vol. 43(26), pages 3745-3754.
    53. Chen, Yu-chin & Rogoff, Kenneth, 2003. "Commodity currencies," Journal of International Economics, Elsevier, vol. 60(1), pages 133-160, May.
    54. Papell, David H. & Prodan, Ruxandra, 2020. "Long-run purchasing power parity redux," Journal of International Money and Finance, Elsevier, vol. 109(C).
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    More about this item

    Keywords

    Law of one price; Exchange rates; Market integration; Food and agricultural prices; Panel unit root tests;
    All these keywords.

    JEL classification:

    • F30 - International Economics - - International Finance - - - General
    • F31 - International Economics - - International Finance - - - Foreign Exchange
    • Q17 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Agriculture in International Trade

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