We investigate the bootstrapped size and power properties of five long memory tests, including the modified R/S, KPSS and GPH tests. In small samples, the moving block bootstrap controls the empirical size of the tests. However, for these sample sizes, the power of bootstrapped tests against...

We investigate the procedure used by Ané and Geman (2000) to recover the moments of the information flow from high frequency data, in a model which generalizes the subordinated process in Clark (1973). We explain why the third and higher moments of the latent information flow cannot be...

Several recent studies advocate the use of nonparametric estimators of daily price vari- ability that exploit intraday information. This paper compares four such estimators, realised volatility, realised range, realised power variation and realised bipower variation, by examining their in-sample...

This paper provides estimates of the impact of higher education qualifications on the earnings of graduates in the UK by subject studied. We use data from the recent UK Labour Force Surveys which provide a sufficiently large sample to consider the effects of the subject studied, class of first...

This paper shows that, unlike in the Heckscher-Ohlin model, the integrated equilibrium in the Davis (1995) Heckscher-Ohlin-Ricardo model depends crucially on demand patterns. The area defining the integrated equilibrium is smaller, the greater is the weight placed by consumers on the good that...

Administered commodity price schemes in developing countries have proved ineffective in raising farmers' incomes and price stabilisation through futures markets is increasingly advocated as the alternative policy objective. A potential difficulty is that farmers tend not to hedge extensively,...

Indigenous minority groups in countries such as the US, Canada and Australia are amongst the most disadvantaged minority groups in the de-veloped world. This disadvantage is strongly associated with 'pre-market' factors. This paper examines pre-market disadvantage of indigenous Australians by...

This paper challenges the view held by the UK Government that the introduction of the English Baccalaureate will lead to an improvement in educational outcomes in secondary education. Evidence is presented to show that this new qualification is biased against disadvantaged pupils from low-income...