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Uncertainty shocks in a model of effective demand: comment

Research output: Contribution to journalArticle

Author(s)

Oliver de Groot, Alexander W. Richter, Nathaniel A. Throckmorton

School/Research organisations

Abstract

Basu and Bundick, 2017 showed an intertemporal preference volatility shock has meaningful effects on real activity in a New Keynesian model with Epstein and Zin, 1991 preferences. We show that when the distributional weights on current and future utility in the Epstein–Zin time aggregator do not sum to 1, there is an asymptote in the responses to such a shock with unit intertemporal elasticity of substitution. In the Basu–Bundick model, the intertemporal elasticity of substitution is set near unity and the preference shock only hits current utility, so the sum of the weights differs from 1. We show that when we restrict the weights to sum to 1, the asymptote disappears and preference volatility shocks no longer have large effects. We examine several different calibrations and preferences as potential resolutions with varying degrees of success.

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Details

Original languageEnglish
Pages (from-to)1513-1526
Number of pages14
JournalEconometrica
Volume86
Issue number4
DOIs
StatePublished - 2 Aug 2018

    Research areas

  • Economic activity, Epstein–Zin preferences, Stochastic volatility, Uncertainty

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