IDEAS home Printed from https://ideas.repec.org/p/nbr/nberwo/0855.html
   My bibliography  Save this paper

Speculative Hyperinflations in Maximizing Models: Can We Rule Them Out?

Author

Listed:
  • Maurice Obstfeld
  • Kenneth Rogoff

Abstract

Knife-edge stability is a common property of dynamic monetary models assuming perfect foresight or rational expectations. These models can be closed with the assumption that the economy's equilibrium lies on the unique convergent path (the saddlepath). While this empirically plausible assumption yields sensible results, aggregative models are not specified in sufficient detail to allow one to prove that the saddlepath is the unique equilibrium path. Brock (1974, 1975) and Brock and Scheinkman (1980) have advanced models in which individual preferences are more fully specified and in which, under certain conditions, the uniqueness and stability of equilibrium can be rigorously demonstrated. This paper shows that these uniqueness conditions are economically unreasonable. Therefore, the question these maximizing models address remains unresolved.

Suggested Citation

  • Maurice Obstfeld & Kenneth Rogoff, 1982. "Speculative Hyperinflations in Maximizing Models: Can We Rule Them Out?," NBER Working Papers 0855, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:0855
    Note: ITI IFM
    as

    Download full text from publisher

    File URL: http://www.nber.org/papers/w0855.pdf
    Download Restriction: no
    ---><---

    Other versions of this item:

    References listed on IDEAS

    as
    1. Fischer, Stanley, 1979. "Capital Accumulation on the Transition Path in a Monetary Optimizing Model," Econometrica, Econometric Society, vol. 47(6), pages 1433-1439, November.
    2. Rodriguez, Carlos Alfredo, 1980. "The Role of Trade Flows in Exchange Rate Determination: A Rational Expectations Approach," Journal of Political Economy, University of Chicago Press, vol. 88(6), pages 1148-1158, December.
    3. Brock, William A., 1975. "A simple perfect foresight monetary model," Journal of Monetary Economics, Elsevier, vol. 1(2), pages 133-150, April.
    4. Jo Anna Gray & Stephen W. Salant, 1981. "Transversality conditions in infinite horizon models," International Finance Discussion Papers 172, Board of Governors of the Federal Reserve System (U.S.).
    5. Calvo, Guillermo A, 1979. "On Models of Money and Perfect Foresight," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 20(1), pages 83-103, February.
    6. Robert E. Lucas & Thomas J. Sargent, 1979. "After Keynesian macroeconomics," Quarterly Review, Federal Reserve Bank of Minneapolis, vol. 3(Spr).
    7. Salant, Stephen W, 1983. "The Vulnerability of Price Stabilization Schemes to Speculative Attack," Journal of Political Economy, University of Chicago Press, vol. 91(1), pages 1-38, February.
    8. Sargent, Thomas J & Wallace, Neil, 1973. "The Stability of Models of Money and Growth with Perfect Foresight," Econometrica, Econometric Society, vol. 41(6), pages 1043-1048, November.
    9. Maurice Obstfeld, 1981. "Inflation, Real Interest, and the Determinacy of Equilibrium in an Optimizing Framework," NBER Working Papers 0723, National Bureau of Economic Research, Inc.
    10. Gray, Jo Anna, 1984. "Dynamic Instability in Rational Expectations Models: An Attempt to Clarify," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 25(1), pages 93-122, February.
    11. Calvo, Guillermo A., 1978. "On the indeterminacy of interest rates and wages with perfect foresight," Journal of Economic Theory, Elsevier, vol. 19(2), pages 321-337, December.
    12. repec:bla:scandj:v:78:y:1976:i:2:p:280-304 is not listed on IDEAS
    13. Brock, William A, 1974. "Money and Growth: The Case of Long Run Perfect Foresight," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 15(3), pages 750-777, October.
    14. Martin L. Weitzman, 1973. "Duality Theory for Infinite Horizon Convex Models," Management Science, INFORMS, vol. 19(7), pages 783-789, March.
    15. Flood, Robert P & Garber, Peter M, 1980. "Market Fundamentals versus Price-Level Bubbles: The First Tests," Journal of Political Economy, University of Chicago Press, vol. 88(4), pages 745-770, August.
    16. Lucas, Robert E, Jr, 1975. "An Equilibrium Model of the Business Cycle," Journal of Political Economy, University of Chicago Press, vol. 83(6), pages 1113-1144, December.
    17. Taylor, John B, 1977. "Conditions for Unique Solutions in Stochastic Macroeconomic Models with Rational Expectations," Econometrica, Econometric Society, vol. 45(6), pages 1377-1385, September.
    18. Unknown, 1978. "Gasohol from Grain- The Economic Issues," Economics Statistics and Cooperative Services (ESCS) Reports 142842, United States Department of Agriculture, Economic Research Service.
    19. Fischer, Stanley, 1974. "Money and the Production Function," Economic Inquiry, Western Economic Association International, vol. 12(4), pages 517-533, December.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Obstfeld, Maurice & Stockman, Alan C., 1985. "Exchange-rate dynamics," Handbook of International Economics, in: R. W. Jones & P. B. Kenen (ed.), Handbook of International Economics, edition 1, volume 2, chapter 18, pages 917-977, Elsevier.
    2. Piersanti, Giovanni, 2012. "The Macroeconomic Theory of Exchange Rate Crises," OUP Catalogue, Oxford University Press, number 9780199653126.
    3. McCallum, Bennett T., 2001. "Indeterminacy, bubbles, and the fiscal theory of price level determination," Journal of Monetary Economics, Elsevier, vol. 47(1), pages 19-30, February.
    4. Tom Kompas & Omar Abdel-Razeq, 2001. "A Simple Monetary Growth Model with Variable Rates of Time Preference," International and Development Economics Working Papers idec01-10, International and Development Economics.
    5. Buiter, Willem H. & Sibert, Anne C., 2007. "Deflationary Bubbles," Macroeconomic Dynamics, Cambridge University Press, vol. 11(4), pages 431-454, September.
    6. McCallum, Bennett T., 1983. "On non-uniqueness in rational expectations models : An attempt at perspective," Journal of Monetary Economics, Elsevier, vol. 11(2), pages 139-168.
    7. Maurice Obstfeld, 1981. "Inflation, Real Interest, and the Determinacy of Equilibrium in an Optimizing Framework," NBER Working Papers 0723, National Bureau of Economic Research, Inc.
    8. Diba, Behzad T. & Grossman, Herschel I., 1988. "Rational inflationary bubbles," Journal of Monetary Economics, Elsevier, vol. 21(1), pages 35-46, January.
    9. Gray, Jo Anna, 1984. "Dynamic Instability in Rational Expectations Models: An Attempt to Clarify," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 25(1), pages 93-122, February.
    10. Bennett T. McCallum, 2000. "Role of the Minimal State Variable Criterion," NBER Working Papers 7087, National Bureau of Economic Research, Inc.
    11. Guillermo A. Calvo, 1983. "Staggered Contracts and Exchange Rate Policy," NBER Chapters, in: Exchange Rates and International Macroeconomics, pages 235-258, National Bureau of Economic Research, Inc.
    12. Guido Ascari & Paolo Bonomolo Hedibert F. Lopes, 2016. "Rational Sunspots," Economics Series Working Papers 787, University of Oxford, Department of Economics.
    13. Jess Benhabib & Stephanie Schmitt-Grohé & Martín Uribe, 2002. "Chaotic Interest-Rate Rules," American Economic Review, American Economic Association, vol. 92(2), pages 72-78, May.
    14. Alogoskoufis, G.S. & van der Ploeg, F., 1991. "Money and growth revisited," Discussion Paper 1991-9, Tilburg University, Center for Economic Research.
    15. Stephanie Schmitt-Grohe & Jess Benhabib & Martin Uribe, 2001. "Monetary Policy and Multiple Equilibria," American Economic Review, American Economic Association, vol. 91(1), pages 167-186, March.
    16. Akhand Akhtar Hossain, 2009. "Central Banking and Monetary Policy in the Asia-Pacific," Books, Edward Elgar Publishing, number 12777.
    17. Maurice Obstfeld & Kenneth Rogoff, 2021. "Revisiting speculative hyperinflations in monetary models," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 40, pages 1-11, April.
    18. Jess Benhabib & Stephanie Schmitt-Grohe & Martin Uribe, 2004. "Chaotic Interest Rate Rules: Expanded Version," NBER Working Papers 10272, National Bureau of Economic Research, Inc.
    19. Engsted, Tom, 1998. "Money Demand During Hyperinflation: Cointegration, Rational Expectations, and the Importance of Money Demand Shocks," Journal of Macroeconomics, Elsevier, vol. 20(3), pages 533-552, July.
    20. Bewley, Truman, 1983. "A Difficulty with the Optimum Quantity of Money," Econometrica, Econometric Society, vol. 51(5), pages 1485-1504, September.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nbr:nberwo:0855. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: the person in charge (email available below). General contact details of provider: https://edirc.repec.org/data/nberrus.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.