BARRIERS TO ENTRY AND DEVELOPMENT*
研究进入壁垒是否是发展中国家与美国收入差距的重要原因，通过构建一般均衡模型并匹配数据，发现发展中国家存在较大进入壁垒，解释了约一半的收入差距。
We ask whether barriers to entry are a quantitatively important reason for the income gap between developing countries and the United States. We develop a tractable general equilibrium model that captures the effects of barriers to entry and the other main distortions typically considered in the development literature. We carry our model to the data and ask it to match the main development facts from the Penn World Table. We find that this requires large barriers to entry in developing countries, which account for about half of the income gap with the United States.