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Working Paper
Sourcing substitution and related price index biases
We define a class of bias problems that arise when purchasers shift their expenditures among sellers charging different prices for units of precisely defined and interchangeable product items that are nevertheless regarded as different for the purposes of price measurement. For business-to-business transactions, these shifts can cause sourcing substitution bias in the Producer Price Index (PPI) and the Import Price Index (MPI), as well as potentially in the proposed new true Input Price Index (IPI). Similarly, when consumers shift their expenditures for the same products temporally to take ...
Working Paper
Does the United States have a productivity slowdown or a measurement problem?
After 2004, measured growth in labor productivity and total-factor productivity (TFP) slowed. We find little evidence that the slowdown arises from growing mismeasurement of the gains from innovation in IT-related goods and services. First, mismeasurement of IT hardware is significant prior to the slowdown. Because the domestic production of these products has fallen, the quantitative effect on productivity was larger in the 1995-2004 period than since, despite mismeasurement worsening for some types of IT?so our adjustments make the slowdown in labor productivity worse. The effect on TFP is ...
Working Paper
Does the United States have a Productivity Slowdown or a Measurement Problem
After 2004, measured growth in labor productivity and total-factor productivity (TFP) slowed. We find little evidence that the slowdown arises from growing mismeasurement of the gains from innovation in IT-related goods and services. First, mismeasurement of IT hardware is significant prior to the slowdown. Because the domestic production of these products has fallen, the quantitative effect on productivity was larger in the 1995-2004 period than since, despite mismeasurement worsening for some types of IT--so our adjustments make the slowdown in labor productivity worse. The effect on TFP is ...
Journal Article
Does Growing Mismeasurement Explain Disappointing Growth?
Slowing growth in U.S. productivity after 2004 is sometimes blamed on measurement problems, particularly in assessing the gains from innovation in IT-related goods and services. However, mismeasurement also occurred before the slowdown and, on balance, there is no evidence that it has worsened. Some innovations?such as free Internet services?have grown increasingly important, but they mainly affect leisure time. Moreover, the non-market benefits do not appear large enough to offset the effects of the business-sector slowdown.