The empirical study of technology shocks is intensively conducted to evaluate plausibility of the technology-driven real business cycle hypothesis. A popular method is to identify technology shocks by the long-run restriction that those solely have permanent effects on labor productivity in the...

In Japan, like many other industrialized countries, output volatility declined dramatically in the 1980s. In order to investigate the cause of this decline, we decompose the variance of output growth by frequency. Our important findings are: (1) The total variance of output growth decreased,...