This paper proposes similar unit root testing procedures for both homogenous and heterogeneous dynamic panel data models, based on least squares estimates and assuming that the time dimension of the panel data is fixed. It is shown that the limiting distribution of the tests id standard normal.

The expectations hypothesis of the term structure of interest rates implies that the spread between short and long bond yields should forecast next period's change in the long yield. Regression based tests have systematically rejected the expectations hypothesis, with estimated coefficients far...