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Social learning about climate risks

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  • Yilan Xu
  • Sébastien Box‐Couillard

Abstract

With a social network adjacency matrix constructed from the Facebook Social Connectedness Index (SCI), this paper examines whether social learning facilitates climate risk perception updates to inform climate adaptation. We find that Hurricanes Harvey and Irma‐induced regional flooding increased flood insurance policies nationwide to the extent of each county's social network proximity to the flooded areas, with a corresponding update in climate risk perception. Social learning resulted in an additional 250,000 policies in flooded counties and 81,000 policies in unflooded counties over 3 years. We find evidence of the salience effect but no support for adverse selection or over‐insurance.

Suggested Citation

  • Yilan Xu & Sébastien Box‐Couillard, 2024. "Social learning about climate risks," Economic Inquiry, Western Economic Association International, vol. 62(3), pages 1172-1191, July.
    • Handle: RePEc:bla:ecinqu:v:62:y:2024:i:3:p:1172-1191
    DOI: 10.1111/ecin.13210
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