尾部风险:第2部分:大衰退后缺失的复苏

J. Kozlowski
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引用次数: 2

摘要

先是下跌,然后向稳定的趋势线急剧反弹。然而,在2007-09年的大衰退之后,这种反弹消失了;一些经济学家称之为“长期停滞”。例如,图1显示了美国的实际国内生产总值(GDP)。虚线是1950-2007年数据的线性趋势。2015年,实际GDP比趋势线低12%;这就是所谓的“缺失复苏”。是什么导致了金融危机后经济复苏的缺失?在这个由三部分组成的系列文章的第一部分中,我曾指出,大衰退后尾部风险增加了;也就是说,在2007-09年的衰退之后,人们认为经济将遭受重大负面冲击的可能性增加了。在本文的第2部分中,我将讨论尾部风险的增加如何帮助我们理解缺失的复苏。尾部风险:第2部分:大衰退后缺失的复苏
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Tail Risk: Part 2, The Missing Recovery After the Great Recession
first declines and then exhibits a sharp rebound toward a stable trend line. Following the Great Recession of 2007-09, however, this rebound is missing; the missing recovery is what some economists call “secular stagnation.”1 For example, Figure 1 shows real gross domestic product (GDP) in the United States. The dashed line is a linear trend that fits data for 1950-2007. In 2015, real GDP was 12 percent below the trend; this is the so-called missing recovery. What caused the missing recovery after the Financial Crisis? In Part 1 of this three-part series, I argued that tail risk increased after the Great Recession; that is, the perceived probability that a large negative shock to the economy would occur increased after the 2007-09 recession. In this Part 2 essay, I discuss how this increase in tail risk can help us understand the missing recovery. Tail Risk: Part 2, The Missing Recovery After the Great Recession
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