Too little or too much R&D?
AbstractAccording to the first generation models of endogenous growth based on expanding product variety, the market economy unambiguously generates too little R&D. Later, by disentangling returns to specialization from the market power parameter, it was shown that with sufficiently low returns to specialization too much R&D can occur. The present paper takes a step further, disentangling the market power parameter from the capital share in final output. We show that this helps finding too much R&D as well. In addition, by differentiating between net and gross returns to specialization it is demonstrated what drives the differing inefficiency results in this literature. The decisive factor behind excessive R&D is the implicit presence of negative externalities of increased specialization. Empirically, an advantage of the more general framework is better agreement with the observed level of markups and the observed falling tendency of the patent/R&D ratio.
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Bibliographic InfoPaper provided by University of Copenhagen. Department of Economics in its series Discussion Papers with number 02-01.
Length: 29 pages
Date of creation: Jan 2002
Date of revision:
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Endogenous growth; Research and development; Expanding product variety; Surplus appropriability problem; Creative destruction; Optimal growth;
Other versions of this item:
- O33 - Economic Development, Technological Change, and Growth - - Technological Change; Research and Development; Intellectual Property Rights - - - Technological Change: Choices and Consequences; Diffusion Processes
- O41 - Economic Development, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - One, Two, and Multisector Growth Models
This paper has been announced in the following NEP Reports:
- NEP-ALL-2002-04-15 (All new papers)
- NEP-DEV-2002-04-15 (Development)
- NEP-INO-2002-04-15 (Innovation)
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