This paper investigates output convergence for the G7 countries using multivariate time series techniques. We consider both the null hypotheses of no convergence and convergence. It is shown that inferences on output convergences depend on which one of the two null hypotheses is considered....

We investigate the nonlinear convergence of African economies as well as whether being stuck in a poverty trap. The former is explored by a modified KSS nonlinear unit root test in order to discriminate long-run converging from catching up, whereas the later is analyzed by both parametric and...