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Does Economic Policy Uncertainty differ from other uncertainty measures? Replication of Baker, Bloom, and Davis (2016)

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  • Siye Bae
  • Soojin Jo
  • Myungkyu Shim

Abstract

This paper revisits Baker et al.'s (2016) main finding that shows the significant negative impacts of shocks to the Economic Policy Uncertainty index on the US aggregate economic activity. We focus on subsample analyses with sample periods extended to December 2022. We find that shocks to the index do not significantly affect the economy during the period from September 2008 to December 2019, in contrast to significant negative impacts found in the sample ending earlier. Interestingly, this feature is specific to the Economic Policy Uncertainty index, while other popular uncertainty measures retain downward pressures on the economy across all of the subsample periods under examination. Economic Policy Uncertainty again deters economic activity once the COVID‐19 period is included in the sample, implying that the size of shocks and/or the state of the economy may play an additional role for its transmission. L'incertitude de la politique économique diffère‐t‐elle des autres mesures de l'incertitude? Répétition de l'étude de Baker, Bloom et Davis. Cet article revient sur la principale constatation de l'étude de Baker et coll. (2016), qui montre les répercussions négatives importantes des chocs de l'indice d'incertitude de la politique économique sur l'activité économique globale des États‐Unis. Nous nous concentrons sur des analyses de sous‐échantillon avec des périodes d'échantillonnage s'étendant jusqu'à décembre 2022. Nous constatons que les chocs de l'indice n'influencent pas l'économie de manière importante au cours de la période allant de septembre 2008 à décembre 2019, contrairement aux répercussions négatives considérables constatées dans l'échantillon se terminant plus tôt. Il est intéressant de noter que cette caractéristique est propre à l'indice d'incertitude de la politique économique, alors que d'autres mesures courantes de l'incertitude continuent de montrer des effets négatifs sur l'économie pour l'ensemble des périodes examinées du sous‐échantillon. L'indice d'incertitude de la politique économique montre de nouveau les effets négatifs une fois la période de la COVID‐19 incluse dans l'échantillon, suggérant que l'importance des chocs ou que l'état de l'économie peuvent jouer un rôle supplémentaire dans la transmission de ces chocs.

Suggested Citation

  • Siye Bae & Soojin Jo & Myungkyu Shim, 2025. "Does Economic Policy Uncertainty differ from other uncertainty measures? Replication of Baker, Bloom, and Davis (2016)," Canadian Journal of Economics/Revue canadienne d'économique, John Wiley & Sons, vol. 58(1), pages 40-74, February.
  • Handle: RePEc:wly:canjec:v:58:y:2025:i:1:p:40-74
    DOI: 10.1111/caje.12757
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