R&D Cooperation and Growth
构建了一个内生增长模型，研究企业间研发合作行为。当技术超过一定门槛时，行业最优合作投资可作为均衡实现；模型还能解释穷国增长较慢和太阳黑子均衡现象。
If R&D produces nonrival inputs then firms have an incentive to cooperate, but free riding can make cooperation difficult. This paper builds a simple endogenous growth model allowing cooperative behavior among firms in their R&D game. Industry's first best cooperative investment is enforceable as an equilibrium only if technology is above a threshold level. This model allows for switching equilibria able to sustain slower growth in poorer countries. The model also admits sunspot equilibria. In a world where the production of ideas is important multiplicity and variability of economic performance can be relevant.Journal of Economic LiteratureClassification Numbers: O32, O40, D9, L16.