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Factor Saving Innovation

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  • Michele Boldrin
  • David K Levine

Abstract

We study a simple model of factor saving technological innovation in a concave framework. Capital can be used either to reproduce itself or, at additional cost, to produce a higher quality of capital that requires less labor input. If higher quality capital can be produced quickly, we get a model of exogenous balanced growth as a special case. If, however, higher quality capital can be produced slowly, we get a model of endogenous growth in which the growth rate of the economy and the rate of adoption of new technologies are determined by preferences, technology, and initial conditions. Moreover, in the latter case, the process of growth is necessarily uneven, exhibiting a natural cycle with alternating periods of high and low growth. Growth paths and technological innovations also exhibit dependence upon initial conditions. The model provides a step toward a theory of endogenous innovation under conditions of perfect competition.

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Paper provided by David K. Levine in its series Levine's Working Paper Archive with number 625018000000000088.

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Date of creation: 18 Jul 2001
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Handle: RePEc:cla:levarc:625018000000000088

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  1. Jones, Larry E & Manuelli, Rodolfo E, 1990. "A Convex Model of Equilibrium Growth: Theory and Policy Implications," Journal of Political Economy, University of Chicago Press, University of Chicago Press, vol. 98(5), pages 1008-38, October.
  2. Michele Boldrin & David K Levine, 2000. "Perfectly Competitive Innovation," Levine's Working Paper Archive 1996, David K. Levine.
  3. Paul M Romer, 1999. "Endogenous Technological Change," Levine's Working Paper Archive 2135, David K. Levine.
  4. Rebelo, Sergio, 1991. "Long-Run Policy Analysis and Long-Run Growth," Journal of Political Economy, University of Chicago Press, University of Chicago Press, vol. 99(3), pages 500-521, June.
  5. Paul M. Romer, 1994. "The Origins of Endogenous Growth," Journal of Economic Perspectives, American Economic Association, American Economic Association, vol. 8(1), pages 3-22, Winter.
  6. Lucas, Robert Jr., 1988. "On the mechanics of economic development," Journal of Monetary Economics, Elsevier, Elsevier, vol. 22(1), pages 3-42, July.
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