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Computing Productivity: Firm-Level Evidence

  • Erik Brynjolfsson

    (MIT Sloan School of Management)

  • Lorin M. Hitt

    (University of Pennsylvania, Wharton School)

We explore the effect of computerization on productivity and output growth using data from 527 large U.S. firms over 1987-1994. We find that computerization makes a contribution to measured productivity and output growth in the short term (using 1-year differences) that is consistent with normal returns to computer investments. However, the productivity and output contributions associated with computerization are up to 5 times greater over long periods (using 5- to 7-year differences). The results suggest that the observed contribution of computerization is accompanied by relatively large and time-consuming investments in complementary inputs, such as organizational capital, that may be omitted in conventional calculations of productivity. The large long-run contribution of computers and their associated complements that we uncover may partially explain the subsequent investment surge in computers in the late 1990s. © 2003 President and Fellows of Harvard College and the Massachusetts Institute of Technology.

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Article provided by MIT Press in its journal Review of Economics and Statistics.

Volume (Year): 85 (2003)
Issue (Month): 4 (November)
Pages: 793-808

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Handle: RePEc:tpr:restat:v:85:y:2003:i:4:p:793-808
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