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Dynamic Controllability With Overlapping Targets: Or Why Target Independence May Not Be Good For You

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  • ACOCELLA, NICOLA
  • DI BARTOLOMEO, GIOVANNI
  • HALLETT, ANDREW HUGHES

Abstract

We generalize some recent results developed in static policy games with multiple players, to a dynamic context. We find that the classical theory of economic policy, static or dynamic, can be usefully applied to a strategic context of difference games: if one player satisfies the Golden Rule, then either all other players policies are ineffective with respect to the dynamic target variables shared with that player. Or no Nash Feedback Equilibrium can exist, unless they all share target values for those variables. We extend those results to the case in which there are also nondynamic targets, to show that policy effectiveness (a Nash equilibrium) can continue to exist if some players satisfy the Golden Rule but target values differ between players in their nondynamic targets. We demonstrate the practical importance of these results by showing how policy effectiveness (a policy equilibrium) can appear or disappear with small variations in the expectations process or policy rule in a widely used model of monetary policy with the possibility of target independence.

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Bibliographic Info

Article provided by Cambridge University Press in its journal Macroeconomic Dynamics.

Volume (Year): 11 (2007)
Issue (Month): 02 (April)
Pages: 202-213

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Handle: RePEc:cup:macdyn:v:11:y:2007:i:02:p:202-213_06

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Cited by:
  1. Hallett, Andrew Hughes & Acocella, Nicola & Di Bartolomeo, Giovanni, 2010. "Policy games, policy neutrality and Tinbergen controllability under rational expectations," Journal of Macroeconomics, Elsevier, vol. 32(1), pages 55-67, March.
  2. Nicola acocella & Giovanni Di Bartolomeo & Andrew Hughes Hallett, . "The theory of economic policy: from a theory of control to a theory of conflict (resolutions)," Working Papers 91/11, Sapienza University of Rome, Metodi e modelli per l'economia, il territorio e la finanza MEMOTEF.
  3. Acocella Nicola & Di Bartolomeo Giovanni, 2010. "Conflict of interest and coordination in public good provision," Politica economica, Società editrice il Mulino, issue 3, pages 389-408.
  4. Huiping Yuan & Stephen M. Miller, 2011. "The Optimality and Controllability of Discretionary Monetary Policy," Working papers 2011-17, University of Connecticut, Department of Economics.
  5. Acocella Nicola & Di Bartolomeo Giovanni, 2007. "Towards a new theory of economic policy: Continuity and innovation," wp.comunite 0020, Department of Communication, University of Teramo.

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