Chu, Angus C. and Lai, Ching-Chong (2009): On the Growth and Welfare Effects of Defense R&D.
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In 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.
|Item Type:||MPRA Paper|
|Original Title:||On the Growth and Welfare Effects of Defense R&D|
|Keywords:||defense R&D, public goods, economic growth, social welfare|
|Subjects:||O - Economic Development, Technological Change, and Growth > O3 - Technological Change; Research and Development; Intellectual Property Rights > O38 - Government Policy
H - Public Economics > H4 - Publicly Provided Goods > H41 - Public Goods
H - Public Economics > H5 - National Government Expenditures and Related Policies > H56 - National Security and War
|Depositing User:||Angus C. Chu|
|Date Deposited:||22. Nov 2009 16:42|
|Last Modified:||15. Feb 2013 17:48|
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Available Versions of this Item
Defense R&D: Effects on Economic Growth and Social Welfare. (deposited 17. Jul 2009 08:25)
- On the Growth and Welfare Effects of Defense R&D. (deposited 22. Nov 2009 16:42) [Currently Displayed]