紀要論文 UNCERTAIN EFFECTS OF SHOCKS VS. UNCERTAIN UNIT ROOT: AN ALTERNATIVE VIEW OF U.S. REAL GDP

HUANG, YU-LIEH  ,  HUANG, CHAO-HIS

56 ( 1 )  , pp.117 - 134 , 2015-06 , Hitotsubashi University
ISSN:0018-280x
NII書誌ID(NCID):AA00207547
内容記述
Instead of exploring the uncertainty about the existence of a unit root in the long-span U.S. real GDP series as in previous studies, e.g., Rudebusch (1993), in this study we investigate the uncertainty about the state (permanence vs. transitoriness) of the output shock period by period by using the “innovation regime-switching” (IRS) model. In this model the effect of a shock may be permanent or transitory in different time periods. By applying the IRS model to the 1870-2008 annual U.S. real GDP data, we find that the output shocks in the periods of the 1893 depression, the 1907 financial panic, the two World Wars and the Great Depression are likely to have had a large but transitory effect, whereas the output shocks in the remaining periods are likely to have had a permanent effect. This result suggests that the long span real GDP is neither a unit-root series nor a trend-stationary series.
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http://hermes-ir.lib.hit-u.ac.jp/rs/bitstream/10086/27191/1/HJeco0560101170.pdf

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