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Macroeconomic Modeling when Agents are Imperfectly Informed

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Author Info
Paul De Grauwe ()
Abstract

DSGE-models have become important tools of analysis not only in academia but increasingly in the board rooms of central banks. The success of these models has much to do with the coherence of the intellectual framework it provides. The limitations of these models come from the fact that they make very strong assumptions about the cognitive abilities of agents in understanding the underlying model. In this paper we relax this strong assumption. We develop a stylized DSGE-model in which individuals use simple rules of thumb (heuristics) to forecast the future inflation and output gap. We compare this model with the rational expectations version of the same underlying model. We find that the dynamics predicted by the heuristic model differs from the rational expectations version in some important respects, in particular in their capacity to produce endogenous economic cycles.

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Paper provided by CESifo Group Munich in its series CESifo Working Paper Series with number CESifo Working Paper No. 2318.

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Date of creation: 2008
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Handle: RePEc:ces:ceswps:_2318

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Related research
Keywords: DSGE-model; imperfect information; heuristics; animal spirits;

Find related papers by JEL classification:
D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search, Learning, and Information
E10 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - General
E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles
E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy

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  3. Binder,M. & Pesaran,H.M., 1995. "Multivariate Rational Expectations Models and Macroeconomic Modelling: A Review and Some New Results," Cambridge Working Papers in Economics 9415, Faculty of Economics, University of Cambridge.
    Other versions:
  4. Nelson, E., 1998. "Sluggish inflation and optimizing models of the business cycle," Journal of Monetary Economics, Elsevier, vol. 42(2), pages 303-322, July. [Downloadable!] (restricted)
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  6. De Long, J Bradford & Andrei Shleifer & Lawrence H. Summers & Robert J. Waldmann, 1990. "Noise Trader Risk in Financial Markets," Journal of Political Economy, University of Chicago Press, vol. 98(4), pages 703-38, August. [Downloadable!] (restricted)
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  9. Svensson, Lars E. O., 1997. "Inflation forecast targeting: Implementing and monitoring inflation targets," European Economic Review, Elsevier, vol. 41(6), pages 1111-1146, June. [Downloadable!] (restricted)
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  10. Arturo Estrella & Jeffrey C. Fuhrer, 2002. "Dynamic Inconsistencies: Counterfactual Implications of a Class of Rational-Expectations Models," American Economic Review, American Economic Association, vol. 92(4), pages 1013-1028, September. [Downloadable!]
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  11. Alex Brazier & Richard Harrison & Mervyn King & Tony Yates, . "The danger of inflating expectations of macroeconomic stability: heuristic switching in an overlapping generations monetary model," Bank of England working papers 303, Bank of England. [Downloadable!]
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  12. Fabio Milani, 2007. "Learning and Time-Varying Macroeconomic Volatility," Working Papers 070802, University of California-Irvine, Department of Economics. [Downloadable!]
  13. Matthieu Darracq Pariès & Stéphane Adjemian & Stéphane Moyen, 2007. "Optimal monetary policy in an estimated DSGE for the euro area," Working Paper Series 803, European Central Bank. [Downloadable!]
  14. Galí, Jordi & Lopez-Salido, Jose David & Vallés Liberal, Javier, 2004. "Rule-of-Thumb Consumers and the Design of Interest Rate Rules," CEPR Discussion Papers 4347, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
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  15. Lawrence J. Christiano & Martin Eichenbaum & Charles Evans, 2001. "Nominal Rigidities and the Dynamic Effects of a Shock to Monetary Policy," NBER Working Papers 8403, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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