Foreign measures of uncertainty, such as the US EPU index, are often used as a proxies for domestic uncertainty in small open economies. We construct an EPU index for Sweden and demonstrate that shocks to the domestic index yield different impulse response functions for GDP growth than shocks to the US index. In particular, a one standard deviation shock to the Swedish index delivers its maximum impact in the same quarter, lowering GDP growth by 0.2 percentage points. In contrast, a shock to the US index delivers its maximum impact with a one-quarter delay. Other foreign proxies, such as the EU and German indices, also generate effects that peak with a one-quarter delay. (JEL D80, E66, F41, F42)
We use computational linguistic methods and a novel dataset to measure the sentiment component of central bank communications in 23 countries over the 2002-2016 period. We first construct a Granger causality network to identify how sentiment is transmitted across central banks. The network structure suggests that comovement in sentiment is not reducible to comovement in output across countries. We also show that some central banks in the network, such as the Federal Reserve and the Bundesbank, tend to cause sentiment shifts in other central banks; whereas other central banks, such as the European Central Bank and the Bank of Japan, tend to be shifted by other central banks. Finally, we use a structural VAR to demonstrate that sentiment shocks generate crosscountry spillovers in sentiment, policy rates, and real variables.
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