破坏性生活事件会影响分析师评估风险吗?致命飓风的证据

Thomas Bourveau, Kelvin K. F. Law
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引用次数: 3

摘要

本研究考察了破坏性生活事件是否会影响分析师评估风险的方式。我们利用1996年至2009年间飓风在美国各地分析师办公地点的交错到来,作为分析师破坏性生活事件经历中看似外生的冲击。我们在差异的差异设置中表明,相对于未受飓风影响的分析师,受飓风影响的州的分析师对飓风后未受影响的公司的预测不太乐观。受飓风影响最大的是那些以前从未在办公地点经历过飓风的分析师。证据表明,分析师使用可用性启发式来评估风险。近年来,我们观察到同样的影响,因为我们基于2012年超级风暴桑迪的分析得出了类似的结果。总体而言,我们的证据表明,破坏性的生活事件会影响分析师的判断。JEL分类:D81;D83;G02;G24;G29。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Do Disruptive Life Events Affect How Analysts Assess Risk? Evidence from Deadly Hurricanes
This study examines whether disruptive life events affect how analysts assess risk. We exploit the staggered arrival of hurricanes between 1996 and 2009 at analysts' office locations across the United States as a plausibly exogenous shock in the analysts' experience of disruptive life events. We show in a difference-in-differences setting that relative to non-affected analysts, analysts in states affected by hurricanes issue less optimistic forecasts for non-affected firms after hurricanes. The temporary effects are strongest for affected analysts who had never before experienced a hurricane in their office location. The evidence suggests that analysts use the availability heuristic to assess risk. We observe the same effects in recent years, as our analysis based on Superstorm Sandy in 2012 yields similar results. Overall, our evidence indicates that disruptive life events affect analysts' judgments. JEL Classifications: D81; D83; G02; G24; G29.
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