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Terms-of-trade shocks are not all alike
Bank of England 2021.01.11 원문보기
When analyzing terms-of-trade shocks, it is implicitly assumed that the economy responds symmetrically to changes in export and import prices. Using a sample of developing countries our paper shows that this is not the case. We construct export and import price indices using commodity and manufacturing price data matched with trade shares and separately identify export price, import price, and global economic activity shocks using sign and narrative restrictions. Taken together, export and import price shocks account for around 40% of output fluctuations but export price shocks are, on average, twice as important as import price shocks for domestic business cycles. Given that shifts in export and import prices have asymmetric effects on the economy, global economic activity shocks, which simultaneously affect export and import prices, are largely undetected in the terms of trade measure but have large effects on domestic business cycles.
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