This study investigates the relationship among interest rates on the long-term governments bonds of five industrialized countries. Both standard and new unit root tests are applied, all of which confirm the presence of exactly one unit root. New cointegration tests are also applied to these...

This study investigates the relationship among interest rates on the long-term governments bonds of five industrialized countries. Both standard and new unit root tests are applied, all of which confirm the presence of exactly one unit root. New cointegration tests are also applied to these...

In this paper, we suggest an extension of the ARCH model, the smooth-transition autoregressive conditional heteroskedasticity (STARCH) model. STARCH models endogenously allow for time-varying shifts in the parameters of the conditional variance equation. The most general form of the model that...

This paper conducts the goodness of fit test of Bartlett (1954) on the stock prices of 12 countries during the period from January 1921 to December 1930 to examine the market efficiency hypothesis. The market efficiency hypothesis is not rejected for most European countries, but it is rejected...

The performance of the Phillips and Perron unit root tests is examined using the optimal bandwidth selection procedure of Andrews and the pre-whitening procedure of Andrews and Monahan. It has been shown that they do not make significant improvements over the tests using fixed truncation lags.

This paper develops new tests of the unit root hypothesis based on instrumental variables estimation. The tests are asymptotically valid in the presence of moving average errors and they are quite accurate in finite samples. They are more powerful against stationary alternatives than other tests...