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Economic effects of currency unions

By Robert Barro and Silvana Tenreyro

Abstract

We develop a new instrumental-variable (IV) approach to estimate the effects of different exchange rate regimes on bilateral outcomes. The basic idea is that the characteristics of the exchange rate between two countries are partially related to the independent decisions of these countries to peg—explicitly or de facto—to a third currency, notably that of a main anchor. This component of the exchange rate regime can be used as an IV in regressions of bilateral outcomes. We apply the methodology to study the economic effects of currency unions. The likelihood that two countries independently adopt the currency of the same anchor country is used as an instrument for whether they share a common currency. We find that sharing a common currency enhances trade, increases price comovements, and decreases the comovement of real gross domestic product shock

Topics: HG Finance, HB Economic Theory
Publisher: Blackwell
Year: 2007
DOI identifier: 10.1111/j.1465-7295.2006.00001.x
OAI identifier: oai:eprints.lse.ac.uk:4987
Provided by: LSE Research Online
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