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DSGE-Modelling - when agents are imperfectly informed

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Author Info
Paul De Grauwe () (Catholic University of Leuven (KUL) - Department of Economics, B-3000 Leuven, Belgium.)
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. JEL Classification: E10, E32, D83.

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Paper provided by European Central Bank in its series Working Paper Series with number 897.

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Length: 57 pages
Date of creation: May 2008
Date of revision:
Handle: RePEc:ecb:ecbwps:20080897

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

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  5. 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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  6. Stefano DellaVigna, 2007. "Psychology and Economics: Evidence from the Field," NBER Working Papers 13420, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  7. Alexis Anagnostopoulos & Omar Licandro & Italo Bove & Karl Schlag, 2007. "An Evolutionary Theory of Inflation Inertia," Journal of the European Economic Association, MIT Press, vol. 5(2-3), pages 433-443, 04-05. [Downloadable!] (restricted)
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  8. 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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  9. 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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  10. 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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  11. Fabio Milani, 2007. "Learning and Time-Varying Macroeconomic Volatility," Working Papers 070802, University of California-Irvine, Department of Economics. [Downloadable!]
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