Abstract

This paper develops a quantitative, multi-country model of endogenous growth, international trade, and international knowledge flows in order to understand how access to both foreign products and technologies, together, influences innovation incentives and the world distribution of income. An endogenous product cycle arises in equilibrium, in which innovative countries engage in both horizontal and vertical research, while others far from the technological frontier specialize in learning about and applying research previously conducted abroad. The effect of trade barriers on the level and dispersion of income across countries is found to be larger than would be predicted by a static trade model, and the effect of access to international knowledge flows is also quantitatively important and dependent on trade flows. For instance, halving the cost of learning reduces income dispersion by 23%, while doing so after eliminating asymmetric international trade barriers reduces income dispersion by only 10%.

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