Keynesian economics without the LM and IS curves: a dynamic generalization of the Taylor-Romer model
John Taylor and David Romer champion an approach to teaching undergraduate macroeconomics that dispenses with the LM half of the IS-LM model and replaces it with a rule for setting the interest rate as a function of inflation and the output gap - i.e., a Taylor rule. But> the IS curve is problematic, too. It is consistent with the permanent-income hypothesis only when the interest rate that enters the IS equation is a long-term rate - not the short-term rate controlled by the monetary authority. This article shows how the Taylor-Romer framework can be readily modified to eliminate this maturity mismatch. The modified model is a dynamic system in output and inflation, with a unique stable path that behaves very much like Taylor and Romer's aggregate demand (AD) schedule. Many - but not all - of the original Taylor-Romer model’s predictions carry over to the new framework. It helps bridge the gap between the Taylor-Romer analysis and the more sophisticated models taught in graduate-level courses.
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- David Romer, 2000.
"Keynesian Macroeconomics without the LM Curve,"
NBER Working Papers
7461, National Bureau of Economic Research, Inc.
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- Henderson, Dale W. & McKibbin, Warwick J., 1993.
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Carnegie-Rochester Conference Series on Public Policy,
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- Dale W. Henderson & Warwick J. McKibbin, 1993. "A comparison of some basic monetary policy regimes for open economies: implications of different degrees of instrument adjustment and wage persistence," International Finance Discussion Papers 458, Board of Governors of the Federal Reserve System (U.S.).
- John B. Taylor, 2000. "Teaching Modern Macroeconomics at the Principles Level," American Economic Review, American Economic Association, vol. 90(2), pages 90-94, May.
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