A Consistent Test for a Unit Root
提出一种新的单位根检验方法，以平稳性为原假设、单位根为备择假设，证明其一致性并推导渐近分布，应用于美国宏观经济时间序列，结果与标准检验显著不同。
This article investigates several U.S. macroeconomic time series for the presence of a unit root using a newly developed test. This test has stationarity as its null hypothesis, and the alternative is a unit-root process. The test is shown to be consistent, and its asymptotic null distribution is determined. Our findings contrast sharply with those obtained via the standard unit-root tests.