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Determinacy in New Keynesian Models: A Role for Money after All?

  • Patrick Minford
  • Naveen Srinivasan

The New-Keynesian Taylor-Rule model of inflation determination with no role for money is incomplete. As Cochrane (2007a) argues, it has no credible mechanism for ruling out bubbles and as a results fails to provide a reason for private agents to pick a unique stable path. We propose a way forward. Our proposal is in effect that the New-Keynesian model should be formulated with a money demand and money supply function. It should also embody a terminal condition for money supply behaviour. If an unstable path occurred the central bank would switch to a money supply Rule explicitly designed to stop it via the terminal condition. This would be therefore a 'threat/trigger strategy' complementing the Taylor Rule - only to be invoked if inflation misbehaved. Thus we answer the criticisms levelled at the Taylor Rule that it has no credible mechanism for ruling out bubbles. However it does imply that money cannot be avoided int he New Keynesian set-up, contrary to Woodford (2008).

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Article provided by Wiley Blackwell in its journal International Finance.

Volume (Year): 14 (2011)
Issue (Month): 2 (06)
Pages: 211-229

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Handle: RePEc:bla:intfin:v:14:y:2011:i:2:p:211-229
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  1. Richard Clarida & Jordi Galí & Mark Gertler, 1997. "The science of monetary policy: A new Keynesian perspective," Economics Working Papers 356, Department of Economics and Business, Universitat Pompeu Fabra, revised Apr 1999.
  2. Bennett T. McCallum, 2008. "Inflation Determination with Taylor Rules: Is New Keynesian Analysis Critically Flawed?," NBER Working Papers 14534, National Bureau of Economic Research, Inc.
  3. Michael Woodford, 2007. "How Important is Money in the Conduct of Monetary Policy?," NBER Working Papers 13325, National Bureau of Economic Research, Inc.
  4. Blanchard, Olivier Jean & Kahn, Charles M, 1980. "The Solution of Linear Difference Models under Rational Expectations," Econometrica, Econometric Society, vol. 48(5), pages 1305-11, July.
  5. Obstfeld, Maurice & Rogoff, Kenneth S., 1983. "Speculative Hyperinflations in Maximizing Models: Can We Rule Them Out?," Scholarly Articles 12491027, Harvard University Department of Economics.
  6. Clarida, Richard & Galí, Jordi & Gertler, Mark, 1998. "Monetary Policy Rules and Macroeconomic Stability: Evidence and Some Theory," CEPR Discussion Papers 1908, C.E.P.R. Discussion Papers.
  7. David Romer, 2000. "Keynesian Macroeconomics without the LM Curve," NBER Working Papers 7461, National Bureau of Economic Research, Inc.
  8. Henderson, Dale W. & McKibbin, Warwick J., 1993. "A comparison of some basic monetary policy regimes for open economies: implications of different degrees of instrument adjustment and wage persistence," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 39(1), pages 221-317, December.
  9. John H. Cochrane, 2011. "Determinacy and Identification with Taylor Rules," Journal of Political Economy, University of Chicago Press, vol. 119(3), pages 565 - 615.
  10. John B. Taylor, 2000. "Teaching Modern Macroeconomics at the Principles Level," American Economic Review, American Economic Association, vol. 90(2), pages 90-94, May.
  11. Benjamin Friedman, 2003. "The LM Curve: A Not-So-Fond Farewell," NBER Working Papers 10123, National Bureau of Economic Research, Inc.
  12. Minford, Patrick, 2008. "Commentary on Economic Projections and Rules of Thumb for Monetary Policy (by Athanasios Orphanides and Volker Wieland)," Cardiff Economics Working Papers E2008/16, Cardiff University, Cardiff Business School, Economics Section.
  13. Taylor, John B., 1993. "Discretion versus policy rules in practice," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 39(1), pages 195-214, December.
  14. Calvo, Guillermo A., 1983. "Staggered prices in a utility-maximizing framework," Journal of Monetary Economics, Elsevier, vol. 12(3), pages 383-398, September.
  15. Patrick Minford & David Peel, 2003. "Optimal monetary policy: is price-level targeting the next step?," Scottish Journal of Political Economy, Scottish Economic Society, vol. 50(5), pages 650-667, November.
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