TY - BOOK AU - Darby,Michael R. ED - National Bureau of Economic Research. TI - The U.S. Productivity Slowdown: A Case of Statistical Myopia T2 - NBER working paper series PY - 1982/// CY - Cambridge, Mass. PB - National Bureau of Economic Research N1 - November 1982; Hardcopy version available to institutional subscribers N2 - This paper identifies three major periods: 1900-1929, 1929-1965, and 1965-1978. In contrast to the middle period, the extreme periods are characterized by rapid growth in private employment and hours worked; because growth in private productivity increases by less, measured labor productivity growth falls compared to the middle period. However this fall reflects a substantial substitution of quantity for quality in labor force growth: after private employment and hours are adjusted for age, sex, immigration, and education, no difference is observed among the average quality-adjusted labor productivity growth rates. Substantial variation in these growth rates remains within the 1929-1965 and 1965-1978 periods. Slow quality-adjusted labor productivity growth during 1929-1948 is just offset by unusually rapid growth during 1948-1965; these variations are attributed to the near cessation of investment during the Depression and World War II and subsequent recovery of the capital-labor ratio. Thus no substantial variations in total factor productivity growth or technical progress is found. Variations inproductivity growth within 1965-1978 are explained by price-control induced biases in reported deflated output. Correction of these biases results inequal quality-adjusted labor productivity growth in 1965-1973 and 1973-1978.A substantial program of future research is proposed. A data appendix is included UR - https://www.nber.org/papers/w1018 UR - http://dx.doi.org/10.3386/w1018 ER -