Time inconsistency: the Phillips curve example, an analysis for intermediate macroeconomics

Fidelina Natividad-Carlos
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Fidelina Natividad-Carlos: University of the Philippines School of Economics

Philippine Review of Economics, 2016, vol. 53, issue 1, 97-126

Abstract: This paper provides the algebra and a panel diagram to attempt to examine the so-called inflation unemployment (or Phillips curve, or aggregate supply) example, the most popular example in the literature when introducing the concept of “time inconsistency” or “dynamic inconsistency.” The resulting panel diagram, along with the derivations presented in the appendices, is used to analyze the different possible outcomes, depending on the scenarios–rule or pre-commitment, cheating, and equilibrium–and find out whether there is indeed “time inconsistency” or “dynamic inconsistency” in the said example.

Keywords: Philips curve; aggregate supply; time inconsistency; dynamic inconsistency; short-run optimal policy; long-run optimal policy; rational expectations; rules versus discretion (search for similar items in EconPapers)
JEL-codes: E31 E52 E61 (search for similar items in EconPapers)
Date: 2016
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