Offshoring Bias in U.S. Manufacturing
In this paper, we show that the substitution of imported for domestically produced goods and services—often known as offshoring—can lead to overestimates of U.S. productivity growth and value added. We explore how the measurement of productivity and value added in manufacturing has been affected by the dramatic rise in imports of manufactured goods, which more than doubled from 1997 to 2007. We argue that, analogous to the widely discussed problem of outlet substitution bias in the literature on the Consumer Price Index, the price declines associated with the shift to low-cost foreign suppliers are generally not captured in existing price indexes. Just as the CPI fails to capture fully the lower prices for consumers due to the entry and expansion of big-box retailers like Wal-Mart, import price indexes and the intermediate input price indexes based on them do not capture the price drops associated with a shift to new low-cost suppliers in China and other developing countries. As a result, the real growth of imported inputs has been understated. And if input growth is understated, it follows that the growth in multifactor productivity and real value added in the manufacturing sector have been overstated. We estimate that average annual multifactor productivity growth in manufacturing was overstated by 0.1 to 0.2 percentage point and real value added growth by 0.2 to 0.5 percentage point from 1997 to 2007. Moreover, this bias may have accounted for a fifth to a half of the growth in real value added in manufacturing output excluding the computer and electronics industry.
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|Note:||Appears in Journal of Economic Perspectives 25(5): 111-132|
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- Robert C. Feenstra & Robert E. Lipsey & Lee G. Branstetter & C. Fritz Foley & James Harrigan & J. Bradford Jensen & Lori Kletzer & Catherine Mann & Peter K. Schott & Greg C. Wright, 2010. "Report on the State of Available Data for the Study of International Trade and Foreign Direct Investment," NBER Working Papers 16254, National Bureau of Economic Research, Inc.
- Robert C. Feenstra & Benjamin R. Mandel & Marshall B. Reinsdorf & Matthew J. Slaughter, 2013.
"Effects of Terms of Trade Gains and Tariff Changes on the Measurement of US Productivity Growth,"
American Economic Journal: Economic Policy,
American Economic Association, vol. 5(1), pages 59-93, February.
- Robert C. Feenstra & Benjamin R. Mandel & Marshall B. Reinsdorf & Matthew J. Slaughter, 2009. "Effects of Terms of Trade Gains and Tariff Changes on the Measurement of U.S. Productivity Growth," NBER Working Papers 15592, National Bureau of Economic Research, Inc.
- Benjamin R. Mandel, 2010. "Heterogeneous firms and import quality: evidence from transaction-level prices," International Finance Discussion Papers 991, Board of Governors of the Federal Reserve System (U.S.).
- Jerry Hausman, 2003. "Sources of Bias and Solutions to Bias in the Consumer Price Index," Journal of Economic Perspectives, American Economic Association, vol. 17(1), pages 23-44, Winter.
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