Abstract

We identify and measure two impacts of industry-level total factor productivity (TFP) growth on aggregate price change in the U.S. and Japan. The first is a standard effect from the definition of aggregate GDP. TFP change lowers aggregate prices ceteris paribus. The second is that a change in TFP in the production of investment goods lowers the cost of capital via lower investment prices. We call this the cost-of-capital effect and formulate an expanded growth accounting framework to capture both effects. We apply it to a harmonized dataset for the two countries and find that the standard effect has fallen since the peak around 2000 due to lower TFP growth and a diminished share of GDP. However, the cost-of-capital effect has risen in importance and offsets part of this decline in the standard effect.

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