摘要：This study investigates the relationship between per capita output growth and population growth using the Solow
growth model when population growth is negative. When the Cobb-Douglas production function is used, the per capita
output growth rate can be positive even if the technological progress rate is zero. In contrast, when the CES
production function is used, the per capita output growth rate is zero if the technological progress rate is zero and the
elasticity of substitution between capital and labor is less than unity.
