Black Swans and the Many Shades of Uncertainty

Black Swans and the Many Shades of Uncertainty
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黑天鹅和多种不确定性

DOI:
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发表时间:
2015
期刊:
影响因子:
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通讯作者:
Nicholas Kozeniauskas
Nicholas Kozeniauskas
中科院分区:
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文献类型:
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作者:
Laura L. Veldkamp;A. Orlik;Nicholas Kozeniauskas

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各种类型的不确定性冲击可以解释宏观经济和金融中的许多现象。但这是否意味着要用一种新的、外生的、未被观察到的冲击来解释商业周期的每一个挑战性特征?本文在一个统一的计量经济学框架下探讨了微观不确定性(企业层面冲击的不确定性)、宏观不确定性(总量冲击的不确定性)和高阶不确定性冲击(分歧)的起源。当代理人使用标准的计量经济学技术和实时数据来重新估计控制黑天鹅(未观察到的极端事件)概率的参数时,微观,宏观和高阶不确定性就像它们的经验对应物一样。研究结果告诉我们,随时间变化的灾害风险和不确定性冲击的许多阴影并不是不同的现象。所有这些都源于使用宏观数据重新估计经济结果的真实概率分布。
Various types of uncertainty shocks can explain many phenomena in macroeconomics and finance. But does this amount to throwing in a new, exogenous, unobserved shock to explain every challenging feature of business cycles? This paper explores the origin of micro uncertainty (uncertainty about firm-level shocks), macro uncertainty (uncertainty about aggregate shocks) and higher-order uncertainty shocks (disagreement) in a unified econometric framework. When agents use standard econometric techniques and real-time data to re-estimate parameters that govern the probability of black swans (unobserved extreme events), micro, macro and higher-order uncertainty covary just like their empirical counterparts. The results teach us that time-varying disaster risk and the many shades of uncertainty shocks are not distinct phenomena. All originate from using macro data to re-estimate the true probability distribution of economic outcomes.
DOI: 10.3982/ecta13079
发表时间: 2018-09-01
期刊: ECONOMETRICA
影响因子: 6.1
作者:
Angeletos, George-Marios;Collard, Fabrice;Dellas, Harris
通讯作者: Dellas, Harris
DOI: 10.1257/aer.104.4.1392
发表时间: 2014
期刊: Corporate Finance: Valuation
影响因子: --
作者:
R. Bachmann;C. Bayer
通讯作者: C. Bayer