Monte Carlo simulations are used to explore the small sample properties of a mean group and two pooled panel estimators of a regression coefficient when the regressor is I(1). We compare and contrast the effect of I(0) and I(1) errors and homogeneous and heterogeneous coefficients in a design...

This paper assesses empirically two competing accounts of high unemployment, the structuralist and persistence theories. It identifies one structural break in UK and German unemployment around 1980 which is more severe in both absolute and relative terms than that for the US in 1973. This offers...