Endogenous Uncertainty and the Non-neutrality of Money

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10 Citazioni (Scopus)


We study some implications of the Theory of Rational Beliefs to monetary policy. We show that monetary policy in a Rational Beliefs environment can have an important effect on the characteristics of economic fluctuations. In Rational Beliefs Equilibria money is generically non-neutral unlike Rational Expectations Equilibria in which money is neutral and monetary policy is ineffective. Under Rational Beliefs Equilibria nominal prices and real output change not only in response to changes in the exogenous growth rate of money but also in response to changes in the state of beliefs. In Rational Beliefs Equilibria monetary shocks have real effects even when they are observed but are not fully anticipated. Furthermore, the non-neutrality of money results in a short run Phillips curve. When money ¿flutters, real output sputters¿. We show that Endogenous Uncertainty and the distribution of market beliefs are the major explanatory variables of such fluctuations. Under Rational Expectations monetary policy is ineffective because agents neutralize it by predicting correctly the effect of the policy. Under Rational Beliefs it is shown instead that inflation and recessions can be substantially aggravated by the distribution of market beliefs.
Lingua originaleEnglish
pagine (da-a)317-345
Numero di pagine29
RivistaEconomic Theory
Stato di pubblicazionePubblicato - 2003


  • Endogenous Uncertainty
  • Monetary Policy
  • Money non neutrality
  • Phillips Curve
  • Rational Belief Equilibrium
  • Rational Beliefs
  • Rational Expectations


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