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α: calibrated so average coauthorship-adjusted count equals average raw count
Does macroeconomic volatility/uncertainty affects accumulation of net foreign assets? In OECD economies over the period 1970–2012, changes in country specific aggregate volatility are, after controlling for a wide array of factors, significantly positively associated with net foreign asset position. A standard open economy model with time varying macroeconomic uncertainty can quantitatively account for this relationship. The key mechanism is precautionary motive: more uncertainty induces residents to save more, and higher savings are in part channeled into foreign assets. Data and theory suggest that volatility is an important determinant of the medium/long run evolution of external imbalances in developed countries.