We obtain an inequality for th esmaple varaince of a Brownian motion on [0,1] and an associated Ornstein-Uhlenbeck process. The result is applied to a regression involving a near-integrated regressor, and establishes that in the limit the dispersion of the least squares estimator is greater in...

In this paper, we analyse the behaviour of regression-based tests for seasonal unit roots when the error is periodically heteroscedastic. We show, using the case of quaterly data to illustrate, that the limiting null distribution of tests for unit roots at the zero and Nyquist frequencies are...

A sequential procedure for determination of trend degree and testing for unit root is introduced; its properties are investigated by Monte Carlo experiments. We compare the performance of Augmented Dickey-Fuller tests and the GLS tests of Elliott, Rothenberg and Srock (1996), in both cases with lag...

We analyze the impact of prosecutor elections on case backlogs. Previous evidence has shown that re-election pressures result in more cases going to trial. Since trials require time and resources, one can expect an effect on the queue. Two competing theories are developed: one of signalling...

This paper conjectures that economics has changed profoundly since the 1970s and that these changes involve a new understanding of the relationship between theoretical and applied work. Drawing on an analysis of John Bates Clark medal winners, it is suggested that the discipline became more...

This paper investigates whether broadband facilitates migration flows from OECD to OECD countries, as well as non-OECD to OECD countries. The selection of both OECD and non-OECD origin countries are based on the magnitude of the flows, examining those with a minimum rate of 0.1 (10 per 1,000...