How does economic policy uncertainty respond to permanent and transitory shocks?

Yoshito Funashima

Bulletin of Economic Research, 2024, vol. 76, issue 1, 267-282

Abstract: The widely used economic policy uncertainty index relies on newspaper reports' word count and may be influenced by media coverage biases. This empirical study explores the response of the economic policy uncertainty index to permanent and transitory shocks, which are identified using a structural vector autoregressive model. We find an overreaction in the economic policy uncertainty index to a permanent shock, suggesting media reporting's temporary overeagerness. Specifically, we demonstrate that the index responds negatively and transiently to a permanent shock, followed by reversed, prolonged responses. However, the negative and transient effects of a transitory shock on the index are milder.

Date: 2024
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https://doi.org/10.1111/boer.12424

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