Quality-improving horizontal innovations

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Quality-improving horizontal innovations

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Gerhard Sorger ()

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Gerhard Sorger

Abstract

We modify the growth model with horizontal innovations from Romer (1990) and Jones (1995) by assuming that researchers can determine the quality of the products they invent. Because research effort increases with product quality, the researchers face a tradeoff between the quantity and the quality of their innovations. We show (i) that every product is slowly but steadily driven out of the market by superior goods, (ii) that the model does not exhibit a strong scale effect, (iii) that the long-run growth rate of the economy is not policy-invariant but can be controlled by quality-contingent R&D subsidies, and (iv) that the optimal solution can be decentralized using a mix of production subsidies, R&D subsidies, and lump-sum taxation.

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Paper provided by University of Vienna, Department of Economics in its series Vienna Economics Papers with number 0609.

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Date of creation: Oct 2006
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Handle: RePEc:vie:viennp:0609

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This paper has been announced in the following NEP Reports:

NEP-ALL-2006-10-21 (All new papers)
NEP-MIC-2006-10-21 (Microeconomics)

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Other versions:
- Bénassy, Jean-Pascal, 1996. "Is there always too little research in endogenous growth with expanding product variety ?," CEPREMAP Working Papers (Couverture Orange) 9615, CEPREMAP.
Gino Gancia & Fabrizio Zilibotti, 2005. "Horizontal Innovation in the Theory of Growth and Development," Economics Working Papers 831, Department of Economics and Business, Universitat Pompeu Fabra. [Downloadable!]
Other versions:
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Other versions:
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Other versions:
- Paul Romer, 1991. "Endogenous Technological Change," NBER Working Papers 3210, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
Segerstrom, Paul S, 1998. "Endogenous Growth without Scale Effects," American Economic Review, American Economic Association, vol. 88(5), pages 1290-1310, December. [Downloadable!] (restricted)
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Other versions:
- Charles I. Jones, 2004. "Growth and Ideas," NBER Working Papers 10767, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
Jones, Charles I, 1995. "R&D-Based Models of Economic Growth," Journal of Political Economy, University of Chicago Press, vol. 103(4), pages 759-84, August. [Downloadable!] (restricted)
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Other versions:
- Maria J. Alvarez-Pelaez & Christian Groth, 2002. "Too little or too much R&D?," Discussion Papers 02-01, University of Copenhagen. Department of Economics. [Downloadable!]
Charles I. Jones & John C. Williams, 1998. "Measuring The Social Return To R&D," The Quarterly Journal of Economics, MIT Press, vol. 113(4), pages 1119-1135, November. [Downloadable!] (restricted)
Other versions:
- Charles I. Jones & John C. Williams, . "Measuring the Social Return to R&D," Working Papers 97002, Stanford University, Department of Economics. [Downloadable!]
- Charles I. Jones & John C. Williams, 1997. "Measuring the social return to R&D," Finance and Economics Discussion Series 1997-12, Board of Governors of the Federal Reserve System (U.S.). [Downloadable!]
Aghion, Philippe & Howitt, Peter, 1992. "A Model of Growth through Creative Destruction," Econometrica, Econometric Society, vol. 60(2), pages 323-51, March. [Downloadable!] (restricted)
Other versions:
- Aghion, P. & Howitt, P., 1990. "A Model Of Growth Through Creative Destruction," DELTA Working Papers 90-12, DELTA (Ecole normale supérieure).
- Aghion, P. & Howitt, P., 1989. "A Model Of Growth Through Creative Destruction," UWO Department of Economics Working Papers 8904, University of Western Ontario, Department of Economics.
- Philippe Aghion & Peter Howitt, 1990. "A Model of Growth Through Creative Destruction," NBER Working Papers 3223, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
- Aghion, P. & Howitt, P., 1989. "A Model Of Growth Through Creative Destruction," Working papers 527, Massachusetts Institute of Technology (MIT), Department of Economics.

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