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The Skill Content Of Recent Technological Change: An Empirical Exploration

  • David H. Autor
  • Frank Levy
  • Richard J. Murnane

We apply an understanding of what computers do to study how computerization alters job skill demands. We argue that computer capital (1) substitutes for workers in performing cognitive and manual tasks that can be accomplished by following explicit rules; and (2) complements workers in performing nonroutine problem-solving and complex communications tasks. Provided that these tasks are imperfect substitutes, our model implies measurable changes in the composition of job tasks, which we explore using representative data on task input for 1960 to 1998. We find that within industries, occupations, and education groups, computerization is associated with reduced labor input of routine manual and routine cognitive tasks and increased labor input of nonroutine cognitive tasks. Translating task shifts into education demand, the model can explain 60 percent of the estimated relative demand shift favoring college labor during 1970 to 1998. Task changes within nominally identical occupations account for almost half of this impact. © 2001 the President and Fellows of Harvard College and the Massachusetts Institute of Technology

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Article provided by MIT Press in its journal The Quarterly Journal of Economics.

Volume (Year): 118 (2003)
Issue (Month): 4 (November)
Pages: 1279-1333

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Handle: RePEc:tpr:qjecon:v:118:y:2003:i:4:p:1279-1333
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