【摘要】This paper presents a fully specified model of long-run growth in which knowledge is assumed to be an input in production that has increasing marginal productivity. It is essentially a competitive equi- librium model with endogenous technological change. In contrast to models based on diminishing returns, growth rates can be increasing over time, the effects of small disturbances can be amplified by the actions of private agents, and large countries may always grow faster than small countries. Long-run evidence is offered in support of the empirical relevance of these possibilities.

【关键词】rents;

【文献来源】Romer P M. Journal of Political Economy, Vol. 94, No. 5 (Oct., 1986), pp. 1002-1037