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The dynamics of knowledge diversity and economic growth

  • Berliant, Marcus
  • Fujita, Masahisa

How is long run economic growth related to the endogenous diversity of knowledge? We formulate and study a microeconomic model of knowledge creation, through the interactions among a group of heterogeneous R & D workers, embedded in a growth model to address this question. In contrast with the traditional literature, in our model the composition of the research work force in terms of knowledge heterogeneity matters, in addition to its size, in determining the production of new knowledge. Moreover, the heterogeneity of the work force is endogenous. Income to these workers accrues as patent income, whereas transmission of newly created knowledge to all such workers occurs due to public transmission of patent information. Knowledge in common is required for communication, but differential knowledge is useful to bring originality to the endeavor. Whether or not the system reaches the most productive state depends on the strength of the public knowledge transmission technology. Equilibrium paths are found analytically. Long run economic growth is positively related to both the effectiveness of pairwise R & D worker interaction and to the effectiveness of public knowledge transmission.

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Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 16475.

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Date of creation: 27 Jul 2009
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Handle: RePEc:pra:mprapa:16475
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  1. Dinopoulos, Elias & Thompson, Peter, 1998. " Schumpeterian Growth without Scale Effects," Journal of Economic Growth, Springer, vol. 3(4), pages 313-35, December.
  2. Berliant, Marcus & Fujita, Masahisa, 2007. "Knowledge creation as a square dance on the Hilbert cube," MPRA Paper 2884, University Library of Munich, Germany.
  3. Gilles Duranton & Diego Puga, 2000. "Nursery Cities: Urban Diversity, Process Innovation and the Life-Cycle of Products," CEP Discussion Papers dp0445, Centre for Economic Performance, LSE.
  4. Marcus Berliant & Robert R. Reed III & Ping Wang, 2000. "Knowledge Exchange, Matching, and Agglomeration," Vanderbilt University Department of Economics Working Papers 0033, Vanderbilt University Department of Economics.
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  10. Dixit, Avinash K & Stiglitz, Joseph E, 1975. "Monopolistic Competition and Optimum Product Diversity," The Warwick Economics Research Paper Series (TWERPS) 64, University of Warwick, Department of Economics.
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  15. Michele Boldrin & David K Levine, 2008. "Against Intellectual Monopoly," Levine's Bibliography 122247000000002371, UCLA Department of Economics.
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  18. Olsson, Ola, 2000. " Knowledge as a Set in Idea Space: An Epistemological View on Growth," Journal of Economic Growth, Springer, vol. 5(3), pages 253-75, September.
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