Ford, George S.; Kline, Audrey D.; Jackson, John D. - 2011
In an effort to resolve the "all or nothing" nature of panel unit root tests, Professors Boucher-Breuer, McNown and … Wallace propose the SURADF test that can determine the mix of stationary and non-stationary series in a panel. We reveal a … practical shortcoming of the test. Specifically, the results of the test appear to be highly sensitive to the selection of panel …