The possibility of a single currency for the Mercosur countries was raised by Argentine President Menem in December 1997 and again at the regional summit this past June. This paper argues that whether Mercosur needs a common currency depends on what kind of integrated regional market its...

In an earlier paper, we showed that the value of shadow prices depends on how the government contemplates re- equilibrating the economy to the perturbation associated with any project, except in the extreme case where the government has chosen all policy instruments optimally. Only under...