We study the global innovation and diffusion of ideas by introducing trade into the model in Eaton and Kortum (1999 … intensity of innovation within countries over time and diffusion rates across countries. We find significant specialization … across the globe: some countries have high innovation rates, while other countries rely on diffusion. Although innovation is …

Innovation depends on exporting and, in particular, on scale and competition in export markets. We develop a theory … featuring (1) quality-segmented markets, (2) step-by-step innovation that moves firms forward along the quality ladder, and (3 …) escape-the-competition motives for innovation. We derive four predictions about the impact on innovation of scale and …

two strategies toward that end: imitation and innovation. The theory bears predictions about the evolution of the …

We perform an econometric investigation of the contribution of pharmaceutical innovation to mortality reduction and … pharmaceutical innovation, there would have been no increase and perhaps even a small decrease in mean age at death, and that new … drugs have increased life expectancy, and lifetime income, by about 0.75-1.0% per annum. The drug innovation measures are …

major changes in the American innovation ecosystem over the past century. The past three decades have been marked by a …

trade affects the incentives for technological advancement. We construct an innovation-based endogenous growth model of … North-South trade. There are two types of innovation: one by the North to upgrade the general purpose technology (GPT) and … estimates where the effects of GPT-driven innovation are eliminated. The share of dynamic gains from trade is about 78% of the …