This study utilizes tests based on ranks and signs suggested by Wright (2000), in addition to the traditional variance-ratio test, to examine the behavior of United Kingdom real estate and construction security indices. The results suggest a positive dependence in the index return series and...

Recurrence plots are graphical devices specially suited to detect hidden dynamical patterns and nonlinearities in data. However, there are few programs available to apply such a mehodology. This paper reviews one of the best free programs to apply nonlinear time series analysis: Visual...

In a recent paper, Razzak (2001) finds some evidence of two types of asymmetry,steepness and deepness, in international business cycle data, using the nonparametric test of Randles et al. (1980). In this paper, we test for three types of asymmetry: steepness, deepness and sharpness, using the...

This paper examines conditional and unconditional asymmetries in the Nelson and Plosser dataset by using two tests recently proposed by Jushan Bai and Serena Ng. In line with previous research, the results show that asymmetry is not a proper characterization of most macroeconomic series,...

In this paper, we look for asymmetries in the Spanish business cycle. To that end, we firstly propose an easy nonparametric testing procedure to test for symmetry based on a Pearson's chi-squared statistic, which we call P-test. Then, we test for two popular forms of asymmetry, deepness and...

Since time reversibility (TR) is a necessary condition for an independent and identically distributed (iid) sequence, several tests for TR have been suggested to be applied as tests for model misspecification. In this paper, we compare the power of two well known TR tests against two situations:...

Ramsey and Rothman (1996) design a statistical device to test for time reversibility (TR test). They claim that their procedure is not powerful against ARCH-type alternatives, which also allows Rothman (1998) to propose a strategy based on the TR test to detect bilinear and threshold...