Teaching Intermediate Macroeconomics using the 3-Equation Model

Abstract

Much teaching of intermediate macroeconomics uses the IS-LM-AS or AD-AS approach. This is far removed both from the practice of interest rate setting, inflation-targeting central banks and from the models that are taught in graduate courses. Modern monetary macroeconomics is based on what is increasingly known as the 3-equation New Keynesian model: IS curve, Phillips curve and interest rate-based monetary policy rule ( IS-PC-MR ). This is the basic analytical structure of Michael Woodford’s book Interest and Prices published in 2003 and, for example, of the widely cited paper ‘The New Keynesian Science of Monetary Policy’ by Clarida et al. published in the Journal of Economic Literature in 1999. A recent graduate textbook treatment is Galí (2008). Much of this literature is inaccessible to undergraduates and non-specialists. Our aim is to show how this divide can be bridged in a way that retains the tractability and policy-friendliness of the old approach yet fits the institutional realities of contemporary policy-making and opens the way to the more advanced literature. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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