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Estimation of Hybrid Phillips Curve: A Source of Conflicting Empirical Results

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  • Hae-shin Hwang

    ()
    (Texas A&M University, Department of Economics, 3035 Allen Building, College Station, TX 77843-4228, USA)

  • Woong Kim

    ()
    (The Bank of Korea, Research Department, 110, 3-Ga, Namdaemun-Ro, Jung-Gu, Seoul, 100-794, Korea; corresponding author)

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    Abstract

    Recent empirical studies of the hybrid Phillips curve draw conflicting conclusions about the relative role of forward-looking behavior and the role of marginal cost as the driving force. It is difficult to identify the source of the conflicting results in past studies because of differences in the measure of inflation, the estimation equation, and the instrumental variables. This article presents evidence that a source of the conflict is the use of suboptimal sets of instruments. When the optimum set of instruments is selected by using the L2-boosting method from the principal components of a large number of valid instruments, all conflicting conclusions in previous studies vanish. Regardless of the choice of inflation measure and estimation equation, we identify the dominant role of forward-looking behavior and a significant effect of the real marginal cost on inflation.

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    Bibliographic Info

    Article provided by Southern Economic Association in its journal Southern Economic Journal.

    Volume (Year): 78 (2012)
    Issue (Month): 4 (April)
    Pages: 1265-1288

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    Handle: RePEc:sej:ancoec:v:78:4:y:2012:p:1265-1288

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    Web page: http://www.southerneconomic.org/
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    Cited by:
    1. Malikane, Christopher, 2013. "A New Keynesian Triangle Phillips Curve," MPRA Paper 43548, University Library of Munich, Germany.

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