Revisiting intertemporal elasticity of substitution in a sticky price model

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Title: Revisiting intertemporal elasticity of substitution in a sticky price model
Author: Kilponen, Juha ; Vilmunen, Jouko ; Vähämaa, Oskari
Organization: Bank of Finland
Series: Bank of Finland Research Discussion Papers
Series number: 9/2021
Year of publication: 2021
Publication date: 9.6.2021
Pages: 32
Subject (yso): rahapolitiikka; mallit; joustot; korko; inflaatio; tuotanto; kulutus; hinnat
Keywords: preferenssit; substituutiojousto
JEL: E32; E52; E21
Other keywords: Monetary policy; Bayesian estimation; Non-separable utility
Abstract: Macroeconomic models typically assume additively separable preferences where consumption enters the utility function in a logarithmic form. This restriction implies that consumption growth is highly sensitive to movements in real interest rates, which in turn implies an unrealistically steep demand curve and intertemporal trade-off. We re-estimate the stylized New Keynesian Model with US data using King-Plosser-Rebelo (1988) preferences with and without habits and show that the equilibrium real interest rate elasticity of output is in the range of 0.05 − 0.20 in the US. Such low real interest rate elasticity is better in line with the empirical consumption Euler equation literature and implies relatively weak transmission of monetary policy to output and inflation.
Rights: https://helda.helsinki.fi/bof/copyright


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