Quality Ledders In The Theory Of Growth
We develop a model of repeated product improvements in a continuum of sectors. Each product follows a stochastic progression up a quality ladder. Progress is not uniform across sectors, so an equilibrium distribution of qualities evolves over time. But the rate of aggregate growth is constant. The growth rate responds to profit incentives in the R&D sector. We explore the welfare properties of our model. Then we relate our approach to an alternative one that views product innovation as a process of generating an ever expanding range of horizontally differentiated products. Finally, we apply the model to issues of resource accumulation and international trade.
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|Date of creation:||1989|
|Date of revision:|
|Contact details of provider:|| Postal: PRINCETON UNIVERSITY, WOODROW WILSON SCHOOL OF PUBLIC AND INTERNATIONAL AFFAIRS, PRINCETON NEW- JERSEY 08542 U.S.A.|
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- Philippe Aghion & Peter Howitt, 1990.
"A Model of Growth Through Creative Destruction,"
NBER Working Papers
3223, National Bureau of Economic Research, Inc.
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- Aghion, Philippe & Howitt, Peter, 1992. "A Model of Growth Through Creative Destruction," Scholarly Articles 12490578, Harvard University Department of Economics.
- Aghion, P. & Howitt, P., 1990. "A Model Of Growth Through Creative Destruction," DELTA Working Papers 90-12, DELTA (Ecole normale supérieure).
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"Monopolistic Competition and Optimum Product Diversity,"
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