The real convergence hypothesis in Australia, Canada, Japan and the UK is examined. For this purpose, the order of integration of the real GDP per capita series in these countries is examined as well as their differences with respect to the US which is used as a benchmark country. Both...

Confidence intervals for the seasonal fractional differencing parameter are established in this article for several measures of the US monetary aggregate. They are based on a testing procedure following Robinson and the results indicate that these confidence intervals are in all cases below 1,...