Endogenous growth without scale effects
构建了一个简单的研发驱动内生增长模型，解释了为什么研发人员大幅增加但专利数量和经济增速并未同步上升，对理解现代经济增长趋势有参考价值。
Abstract: This paper presents a simple R&D-driven endogenous growth model to shed light on some puzzling economic trends. The model can account for why patent statistics have been roughly constant even though R&D employment has risen sharply over the last 30 years. The model also illuminates why steadily increasing R&D effort has not lead to any upward trend in economic growth rates, as is predicted by earlier R&D-driven endogenous growth models with the “scale effect ” property.