This paper uses a threshold autoregressive (TAR) framework to assess the relative importance of structural breaks and asymmetric persistence in accounting for the post-war unemployment experience. In comparing unemployment patterns across time periods and countries, we take the US as a...

The use of GLS to deal with cross-section dependence in panels is not feasible where N is large relative to T since the disturbance covariance matrix is rank deficient. Neither is it the appropriate response if the dependence results from omitted global variables or common shocks correlated with...