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Heterogeneous Risk Preferences and the Welfare Cost of Business Cycles

机译:异构风险偏好和商业周期的福利成本

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摘要

I study the welfare cost of business cycles in a complete-markets economy where some people are more risk averse than others. Relatively more risk-averse people buy insurance against aggregate risk, and relatively less risk-averse people sell insurance. These trades reduce the welfare cost of business cycles for everyone. Indeed, the least risk-averse people benefit from business cycles. Moreover, even infinitely risk-averse people suffer only finite and, in my empirical estimates, very small welfare losses. In other words, when there are complete insurance markets, aggregate fluctuations in consumption are essentially irrelevant not just for the average person – the surprising finding of – but for everyone in the economy, no matter how risk averse they are. If business cycles matter, it is because they affect productivity or interact with uninsured idiosyncratic risk, not because aggregate risk per se reduces welfare.
机译:我研究了完全市场经济中商业周期的福利成本,在这种经济中,有些人比其他人更愿意规避风险。相对规避风险的人购买针对总风险的保险,而规避风险的人则购买保险。这些交易为每个人减少了商业周期的福利成本。确实,风险最小的人会从商业周期中受益。而且,即使是无限风险厌恶的人也只遭受有限的损失,根据我的经验估计,福利损失很小。换句话说,当有完整的保险市场时,总的消费波动本质上不仅仅与普通人无关(这是令人惊讶的发现),而且对于经济中的每个人而言,无论他们有多么厌恶风险。如果业务周期很重要,那是因为它们会影响生产力或与未保险的特质风险互动,而不是因为总风险本身会降低福利。

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