Unit-Root Tests and Asymmetric Adjustment with an Example Using the Term Structure of Interest Rates
开发了检验单位根（非平稳）与非对称平稳备择假设的临界值，重点考虑阈值和动量阈值自回归过程，发现新检验比标准Dickey-Fuller检验功效更高，并用利率期限结构数据说明长期均衡调整是非对称的。
This article develops critical values to test the null hypothesis of a unit root against the alternative of stationarity with asymmetric adjustment. Specific attention is paid to threshold and momentum threshold autoregressive processes. The standard Dickey–Fuller tests emerge as a special case. Within a reasonable range of adjustment parameters, the power of the new tests is shown to be greater than that of the corresponding Dickey–Fuller test. The use of the tests is illustrated using the term structure of interest rates. It is shown that the movements toward the long-run equilibrium relationship are best estimated as an asymmetric process.