Impact of Exchange Rate Shocks on Japanese Exports: Quantitative assessment using the structural VAR model (Japanese)

Tokuo Iwaisako and Hayato Nakata

Discussion Papers (Japanese) from Research Institute of Economy, Trade and Industry (RIETI)

Abstract: In the policy debate over Japanese macroeconomic performance, the impact of exchange rate fluctuations on Japan's exports has received enormous attention. However, if we take the period from the end of 2008 following the collapse of Lehman Brothers as an example, the "price shock" of the yen's rapid appreciation and the "quantity shock" due to the rapid decline in global aggregate demand were equally responsible for the significant slowdown in exports. We analyze this problem employing structural vector autoregressions (VAR), assuming that there are two exogenous shocks, namely, foreign demand shock and exchange rate specific shock. We evaluate the relative importance of each shock to Japanese aggregate exports. We further expand our VAR system to incorporate and analyze the impact of fluctuations in oil prices as additional exogenous shocks. In the second half of the paper, the relative importance of foreign demand shocks and exchange rate shocks during the historic episodes of large exchange rate fluctuations are compared, including the mid-1980s with the high-yen recession after the Plaza Accord, the sharp yen appreciation in the mid-1990s, and the period of "trade collapse" after the Lehman Brothers collapse in the late 2000s.

Pages: 22 pages
Date: 2014-11
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