This paper proposes a new test of the null hypothesis that the parameters in a cointegrated panel data regression are equal across the cross-section. The asymptotic distribution of the new test statistic is derived and simulation results are provided to suggest that it performs very well in...

This paper examines the effect of class size on student evaluations of the quality of an introductory mathematics course at Lund university in Sweden. In contrast to much other studies, we find a large negative, and statistically significant, effect of class size on the quality of the course....

Previous time series evidence has indicated that farmland prices and cash rents are not cointegrated, a finding at odds with the present value model of farmland prices. We argue that this failure to find cointegration may be due to low power of tests and to the presence of structural change...