Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
In their 2001 paper, Breuer, McNown, and Wallace argue that panel unit root tests are flawed in that the “all or nothing nature of these procedures may lead to serious misinterpretations of tests applied to mixed panels” (2001, p. 483). The authors propose an alternative test, the SURADF test, which allows for and estimates heterogeneous rates of convergence. We show that SURADF test results are highly sensitive to the selection of panel members. As such, application of the SURADF test seems to require a sound basis for panel member selection and a caveat that all results are panel‐specific.