Population and income: Is there a puzzle?
基于125个国家1950-2000年的数据，发现人口增长与人均GDP呈弱负相关，收入越高人口增长越慢，这一关系在非洲和1970年前的亚洲更为明显。
Abstract This note presents wide evidence on the relationship between population and income for 125 countries for which data was available for the period 1950–2000. The main result is that there is a weak but negative relationship between population growth and per capita GDP, as income increases population expands at a slower rate. This relationship appears to be stronger for African countries and for Asian countries before 1970.