In this study, we apply the Panel Stationary test with both sharp and smooth breaks to test the validity of long-run purchasing power parity (PPP) for 20 African countries using quarterly data over the period 1971I-2012IV. Empirical results of Panel stationary tests with both sharp and smooth...

Using the considerably powerful nonparametric cointegration tests proposed by Bierens (1997, 2004), we do not find any evidence indicative of the existence of rational bubbles in the US stock market during the long period of 1871 to 2002. In addition, with the application of a logistic smooth...

Following Mann's (National Tax Journal, 33, 189-201, 1980) study, five different versions of Wagner's law are empirically examined using annual time-series data on ten countries over the period 1951 to 1996. Included are three of the emerging industrialized countries of Asia: South Korea,...