Okun's Coefficient: A Comment
重新评估了Prachowny（1993）关于美国奥肯定律系数仅为-0.67的结论，使用相同数据和协整框架，发现其中一个数据集的系数更接近-2.25，支持了先前研究。
This paper reassesses a finding by Martin Prachowny (1993) that the value of the Okun coefficient for the United States (linking unemployment changes to output changes) is only around −0.67 rather than around the more typical value of −2.25. Using a cointegration framework, and the same data sets as Prachowny, we find, for one of the data sets, that the Okun coefficient is much closer to a value of −2.25, which supports previous research work.