Staff Reports

Investment Shocks and Business Cycles

March 2008  Number 322
JEL classification: C11, E22, E30

Authors: Alejandro Justiniano, Giorgio E. Primiceri,
and Andrea Tambalotti

Shocks to the marginal efficiency of investment are the most important drivers of business cycle fluctuations in U.S. output and hours. Moreover, like a textbook demand shock, these disturbances drive prices higher in expansions. We reach these conclusions by estimating a dynamic stochastic general equilibrium (DSGE) model with several shocks and frictions. We also find that neutral technology shocks are not negligible, but their share in the variance of output is only around 25 percent and even lower for hours. Labor supply shocks explain a large fraction of the variation of hours at very low frequencies, but not over the business cycle. Finally, we show that imperfect competition and, to a lesser extent, technological frictions are the key to the transmission of investment shocks in the model.

Available only in PDF PDF 45 pages / 478 kb

For a published version of this report, see Alejandro Justiniano, Giorgio E. Primiceri, and Andrea Tambalotti, "Investment Shocks and Business Cycles," Journal of Monetary Economics 57, no. 2
(March 2010): 132-45.