This paper investigates the size and power of a number of unit root tests, currently in use in both applied macro and financial economics, when the data generating process is fractionally integrated. The long persistence characteristic of fractionally integrated processes lowers the power of...

Official employment-related Performance Indicators in UK Higher Education are based on the population of students responding to the First Destination Supplement (FDS). This generates potentially biased performance indicators as this population of students is not necessarily representative of the...

We exploit a rich administrative panel data-set for cohorts of Economics students at a UK university in order to identify causal effects of class absence on student performance. We exploit the panel properties of the data to control for unobserved heterogeneity across students and hence for...

We exploit individual-level administrative data for whole populations of UK university students for the leaving cohorts of 1985-1993 to investigate the determinants of graduate occupational earnings. Among other results, we find that there are significant differences in the occupational earnings...

We exploit individual-level administrative data for whole populations of UK university students for the leaving cohorts of 1985-1993 (together with that of 1998) to investigate the influence of degree performance on graduate occupational earnings. We find that there is a significant premium...

After accelerating in the second half of the 1990s, aggregate labour productivity growth in Canada has fallen off significantly since 2000. This paper examines the factors behind this development, which is puzzling given the recent acceleration of productivity growth in the United States and the...

We exploit a rich administrative panel data-set for cohorts of Economics students at a UK university in order to identify causal effects of class absence on student performance. We utilise the panel properties of the data to control for unobserved heterogeneity across students and hence for...

We investigate the effects of outliers on the KPSS tests. We find that for nonstationary series outliers induce spurious stationarity by lowering the power of these tests. The empirical size of these tests is also found to be sensitive to the location of the outlier. Copyright Springer...

An increase over time in the proportion of young people obtaining a degree is likely to impact on the relative ability compositions (i) of graduates and non-graduates and (ii) across graduates with different classes of degree award. In a signalling framework, we examine the implications of this...