We study whether there is a long-run relationship between Mexican current account (CA) revenues and expenditures. Our results show that evidence in favor of this claim is drawn only when (at least) three structural break levels are allowed. The CA therefore behaves as a broken-mean stationary...

We show that the use of the real effective exchange rate to test for purchasing power parity, as in Astorga (2012) and other studies, is subject to a problem that biases tests against finding evidence of PPP. The problem is illustrated using Astorga´s data on six Latin American countries.

This paper investigates the asymptotic behavior of the t-ratio associated to an irrelevant variable in a three-variable cointegration analysis. It is proved that the t-ratio converges to a non-standard distribution suitable for statistical inference. Although the test-statistic is not pivotal...