The elastic origins of tail asymmetry

Satoshi Nakano and Kazuhiko Nishimura

Papers from arXiv.org

Abstract: Based on a multisector general equilibrium framework, we show that the sectoral elasticity of substitution plays the key role in the evolution of asymmetric tails of macroeconomic fluctuations and the establishment of robustness against productivity shocks. Non-unitary elasticity of substitution renders a nonlinear Domar aggregation, where normal sectoral productivity shocks translate into non-normal aggregated shocks with variable expected output growth. We empirically estimate 100 sectoral elasticities of substitution, using the time-series linked input-output tables for Japan, and find that the production economy is elastic overall, relative to Cobb-Douglas with unitary elasticity. Along with the previous assessment of an inelastic production economy for the US, the contrasting tail asymmetry of the distribution of aggregated shocks between the US and Japan is explained. Moreover, robustness of an economy is assessed by the expected output growth, the level of which is led by the sectoral elasticities of substitution, under zero mean productivity shocks.

Date: 2021-10, Revised 2023-01
New Economics Papers: this item is included in nep-hme and nep-mac
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Published in Macroeconomic Dynamics 2023

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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:2110.08612

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