Why is there so much Inertia in Inflation and Output? A Behavioral Explanation

22 Pages Posted: 2 Oct 2018

See all articles by Yuemei Ji

Yuemei Ji

University College London - School of Slavonic and East European Studies

Date Written: August 09, 2018

Abstract

Serial correlation in macroeconomics is pervasive. Macroeconomic modellers find it impossible to model this feature without relying on serially correlated shocks. Using a behavioral macroeconomic model, I show that serial correlation in inflation and output can easily be explained in the context that agents do not have rational expectation. This important feature is missing in the standard New Keynesian rational expectations models. The rational expectation models need serially correlated exogenous shocks to account for the high serial correlation in inflation and output while the behavioral model produces serial correlation in these variables endogenously. I also show that inertia in the beliefs about the future is a strong force in producing the serial correlation in inflation and output.

Keywords: behavioral macroeconomics, serial correlation, inflation, output gap, inertia in belief, endogenous business cycle

JEL Classification: E000

Suggested Citation

Ji, Yuemei, Why is there so much Inertia in Inflation and Output? A Behavioral Explanation (August 09, 2018). CESifo Working Paper Series No. 7181, Available at SSRN: https://ssrn.com/abstract=3254217 or http://dx.doi.org/10.2139/ssrn.3254217

Yuemei Ji (Contact Author)

University College London - School of Slavonic and East European Studies ( email )

Malet Street
London WC1E 7HU
United Kingdom

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