We investigate the order of integration of aggregate wage, price and productivity measures for the USA. Our investigation differs from previous studies as we employ recently developed tests that allow, under the alternative hypothesis, for structural change between periods in which the data are...

Conventional Dickey-Fuller unit root tests have been generalized to allow for nonlinearity under the alternative hypothesis by Enders and Granger [Journal of Business Economics and Statistics, 16 (1998) 304] (EG) and Leybourne, Newbold and Vougas [Journal of Time Series Analysis, 19 (1998) 83]...

We study the predictability of equity risk premiums for UK equity indexes, in particular whether stylized facts found for the US stock market also apply to the UK market. We compare the performance of economic and technical indicators with a particular focus on the time-varying nature of...