Researchers focus more on the relationship between research output and economic growth. The study of such a relationship is not only of theoretical interest, but it can also influence specific policies to improve the quality, and probably the quantity of research output. This paper has studied...

Two recent nonlinear causality tests are used to examine the causal linkages across increasingly important international equity and commodity markets. We show that nonlinear causality is more appealing when asymmetric patterns are accounted for. The results are crucial to hedging and portfolio...

This paper investigates the dynamic causal link between exports and economic growth using both linear and nonlinear Granger causality tests. We use annual South African data on real exports and real gross domestic product from 1911-2011. The linear Granger causality result shows no evidence of...

The aim of this paper is to investigate the causal relationship between agricultural prices in South Africa and global oil prices. A nonlinear Granger causality test based on moment conditions, introduced by Nishiyama et al (2011) is employed and we find that there is indeed a causal...

This paper investigates the impact of macroeconomic effects of uncertainty on the conditional volatility of US-listed Real Estate Investment Trusts (REITs). To this end we employ three widely accepted US REITs indices and the two uncertainty indices constructed by Baker et al. (2013). Our sample...

The financial crisis has fueled interest in alternatives to traditional asset classes that might be less affected by large market gyrations and, thus, provide for a less volatile development of a portfolio. One attempt at selecting stocks that are less prone to extreme risks, is obeyance of...

This study investigates the asymmetric and time-varying causality between inflation and inflation uncertainty in South Africa within a conditional Gaussian Markov switching vector autoregressive (MS-VAR) model framework. The MS-VAR model is capable of determining both the sign and direction of...