Further Evidence on the Asymmetric Behavior of Economic Time Series over the Business Cycle
检验了Salih Neftçi提出的经济衰退比复苏更陡峭且短暂的假说，发现该假说在美国失业率数据中成立，但在美国实际GNP、投资、生产率及国外工业产值数据中不显著。
Evidence has recently been presented by Salih Neftçi to support the hypothesis that recessions in economic activity tend to be steeper and more short-lived than recoveries in economic activity. That evidence, however, was confined to the behavior of the unemployment rate in the United States. In this paper it is shown that when Neftçi's methods are applied to analyze the behavior of real gross national product, investment, and productivity in the United States or when they are used to analyze industrial production abroad, the asymmetry hypothesis seems to be less compelling.