The Role of Investment-Specific Technological Change in the Business Cycle.

This is a specific investigation of the importance of technological change specific to new investment goods for postwar U.S. aggregate fluctuations. A growth model that incorporates this form of technological change is calibrated to U.S. data and simulated, using the relative price of new equipment to identify the process driving investment-specific technology shocks. The analysis suggests that this form of technological change is the source of about 30 percent output fluctuations.