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Time-consistent implementation in macroeconomic games

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  • Barthélemy, Jean
  • Mengus, Eric

Abstract

The commitment ability of governments is neither infinite nor zero but intermediate. In this paper, we determine the commitment ability that a government needs to implement a unique equilibrium outcome and rule out undesired self-fulfilling expectations. We first show that, in a large class of static macroeconomic games, the government can implement any time-consistent outcome with any low level of commitment ability. We then show that this result may not be robust to imperfect information, fixed costs or repeated interactions. We finally derive implications for models of bailouts, inflation bias, and capital taxation.

Suggested Citation

  • Barthélemy, Jean & Mengus, Eric, 2022. "Time-consistent implementation in macroeconomic games," CEPR Discussion Papers 17120, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:17120
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    References listed on IDEAS

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    1. Kenneth Rogoff, 1985. "The Optimal Degree of Commitment to an Intermediate Monetary Target," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 100(4), pages 1169-1189.
    2. Roc Armenter, 2008. "A General Theory (and Some Evidence) of Expectation Traps in Monetary Policy," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 40(5), pages 867-895, August.
    3. Roc Armenter, 2008. "A General Theory (and Some Evidence) of Expectation Traps in Monetary Policy," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 40(5), pages 867-895, August.
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    Cited by:

    1. Gaballo, Gaetano & Mengus, Eric, 2023. "Myopic fiscal objectives and long-Run monetary efficiency," Journal of Monetary Economics, Elsevier, vol. 136(C), pages 1-17.

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    More about this item

    Keywords

    Implementation; Limited commitment; Policy rules;
    All these keywords.

    JEL classification:

    • C73 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Stochastic and Dynamic Games; Evolutionary Games
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies
    • E61 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Policy Objectives; Policy Designs and Consistency; Policy Coordination
    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation

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