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The New Keynesian Microfoundations of Macroeconomics

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Abstract

New Keynesian Macroeconomics (NKM) obeys to the new dogma that macroeconomics should be firmly grounded in First Principles of micro theory. Households are assumed to run an intertemporal optimization calculus with respect to leisure and consumption by making use of perfect financial markets. The supply side is organized so that full employment prevails. Macroeconomic coordination problems between saving and investment are absent. In order to make model predictions more compatible with empirical facts, NKM chooses "ad hoc" microfoundations: utility functions and market structures are designed arbitrarily to allow for persistence of macro variables. NKM's reduced hybrid macro model, with lags and expectational leads, is a useful "work horse", compatible with various micro reasoning. However, NKM's insistence on the representative agent obstructs an understanding of heterogeneous beliefs and learning.

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  • Heinz-Peter Spahn, 2009. "The New Keynesian Microfoundations of Macroeconomics," Diskussionspapiere aus dem Institut für Volkswirtschaftslehre der Universität Hohenheim 317/2009, Department of Economics, University of Hohenheim, Germany.
  • Handle: RePEc:hoh:hohdip:317
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    Cited by:

    1. Spahn, Peter, 2013. "Subprime and euro crisis: Should we blame the economists?," FZID Discussion Papers 83-2013, University of Hohenheim, Center for Research on Innovation and Services (FZID).

    More about this item

    Keywords

    Representative Agent; Ramsey Saving; Calvo Pricing; Sticky Information; Rational Expectations; Heterogeneous Beliefs;

    JEL classification:

    • B22 - Schools of Economic Thought and Methodology - - History of Economic Thought since 1925 - - - Macroeconomics
    • E12 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Keynes; Keynesian; Post-Keynesian
    • E2 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment
    • E3 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy

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