Journal of Evolutionary Economics

, Volume 27, Issue 5, pp 1181–1203 | Cite as

Nonlinear monetary policy rules in a pure exchange overlapping generations model

Regular Article


The dynamics of a pure exchange overlapping generations model with endogenous money growth rule is investigated. We consider a nonlinear monetary policy rule which, in each period, bounds the money growth rate so that money is determined by the deviation of the inflation rate from its target. More precisely, we introduce such a mechanism through a sigmoidal money adjustment mechanism characterized by the presence of two asymptotes that bound the money variation, and thus the dynamics. It is shown that, depending on the timing of the monetary policy and the degree of reaction of the Central Bank, the target equilibrium may be destabilized via different types of bifurcations. Multistability and coexistence of attractors may also occur and the study of the basins of attraction allows us to analyze the global dynamic properties of the economy under scrutiny. We find that active monetary policy rules may be relevant for their stabilizing properties, but they also may open the door to equilibrium cycles of any periodicity and even chaos.


OLG model Nonlinear dynamics Monetary policy Stability Global bifurcations 

JEL Classification

E32 E52 C62 



Authors thank two anonymous referees for valuable comments and remarks. Authors also thank all the participants to the 9th International Conference on Nonlinear Economic Dynamics (NED2015) held at Chuo University, Tokyo, Japan, on June 25–27 2015 for useful suggestions. The usual caveats apply.

The authors declare that they have no conflict of interest.


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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  1. 1.Department of Economics and Social SciencesCatholic UniversityPiacenzaItaly
  2. 2.Department of Economics, Quantitative Methods and ManagementUniversity of Milano - BicoccaMilanoItaly

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