On the Growth and Welfare Effects of Defense R&D
AbstractIn the US, defense R&D share of GDP has decreased significantly since 1960. To analyze the implications on growth and welfare, we develop an R&D-based growth model that features the crowding-out and spillover effects of defense R&D on civilian R&D. The model also captures the effects of defense technology on (i) national security resembling consumption-type public goods and (ii) aggregate productivity via the spin-off effect resembling productive public goods. In this framework, economic growth is driven by market-based civilian R&D as in standard R&D-based growth models and government-financed public goods (i.e., defense R&D) as in Barro (1990). We find that defense R&D has an inverted-U effect on growth, and the growth-maximizing level of defense R&D is increasing in the spillover and spin-off effects. As for the welfare-maximizing level of defense R&D, it is increasing in the security-enhancing effect of defense technology, and there exists a critical degree of this security-enhancing effect below (above) which the welfare-maximizing level is below (above) the growth-maximizing level.
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Bibliographic InfoPaper provided by Institute of Economics, Academia Sinica, Taipei, Taiwan in its series IEAS Working Paper : academic research with number 09-A008.
Length: 24 pages
Date of creation: Jul 2009
Date of revision: Dec 2009
Note: Primitive title: Defense R&D: Effects on Economic Growth and Social Welfare
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Web page: http://www.econ.sinica.edu.tw/index.php?foreLang=en
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defense R&D; public goods; economic growth; social welfare;
Other versions of this item:
- H41 - Public Economics - - Publicly Provided Goods - - - Public Goods
- H56 - Public Economics - - National Government Expenditures and Related Policies - - - National Security and War
- O38 - Economic Development, Technological Change, and Growth - - Technological Change; Research and Development; Intellectual Property Rights - - - Government Policy
- O40 - Economic Development, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - General
This paper has been announced in the following NEP Reports:
- NEP-ALL-2009-12-19 (All new papers)
- NEP-FDG-2009-12-19 (Financial Development & Growth)
- NEP-INO-2009-12-19 (Innovation)
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