Trade in ideas Patenting and productivity in the OECD
构建了一个增长与技术扩散模型，并用OECD国家数据拟合，发现各国最终增长率趋同，相对生产率取决于技术采纳能力；超过50%的增长来自美、德、日的创新。
We develop a model of growth and technology diffusion which we fit to aggregate data from OECD countries. Our model implies that each country will eventually grow at the same rate, with its relative productivity determined by its ability to adopt new inventions. Hence productivity levels rather than growth rates better reflect a country's ability to innovate or to adopt new technology. We estimate the model to explain international patterns of productivity and patenting. We find that more than 50% of the growth in each country in our sample derives from innovation in the United States, Germany, and Japan.