We analyze Granger causality testing in a mixed-frequency VAR, where the difference in sampling frequencies of the variables is large. Given a realistic sample size, the number of high-frequency observations per low-frequency period leads to parameter proliferation problems in case we attempt to...

This paper investigates the recent boom od the Brazilian trade surplus by estimating a partial adjustment model for exports and imports. The results indicate that exports quantum is basically explained by the income of the rest of the world and by the gap of domestic output. The role of the...