Departures from an economic equilibrium should be mean reverting. The deviations are often assumed to be integrated of order zero but this is too restrictive. It is sufficient that the shocks are integrated of an order less than one, i.e. they may be fractionally integrated. A fractionally...

The LM type linearity test for STAR nonlinearities is severely distorted when the process is governed by conditional heteroskedasticity. In order to correct the test we propose a parametric bootstrap. It is shown, by means of Monte Carlo methods, that the bootstrap test is almost exact.

Uncertainty concerning future income lowers consumption. This is often called the precautionary demand for savings. In this paper the existence of precautionary savings. In this paper the existence of precautionary saving is investigated using Swedish data for the years 1973-1992. As there are...

This paper develops an improved test of economic convergence or divergence using time series methods. The usefulness of the method is illustrated in an analysis of the growth pattern between Chinese regions in 1952–2007. Comparing all combinations of regional pairs, the analysis yields support...

In cointegration analysis, when considering a hypothesis of the kind β = (H 1 ϕ 1,..., H n ϕ n) the estimation technique is a simple switching method that requires starting values. Using additional restrictions, the solution of an eigenvector problem may be used as starting values. Using a...

The behaviour of Swedish stock returns over short and long-run horizons is analysed. Using monthly data from 1919 to 1995 and, weekly and daily data for the 1980s and first part of the 1990s little evidence of long-run dependence was found. Using three different tests that are robust to...