关键词: 技能溢价, 技术进步技能偏向性, 非线性似不相关方法

Abstract: Endogenous economic growth theory has always been concerned about the contribution of technological change to the economic growth. But modern research has generally ignored the impact of the biased effect of technical change on factors, particularly whether technological change is skill biased and lead to different types of workers compensation differentiation. In this paper, two level CES function and standardization system nonlinear seemingly unrelated regression are utilized to estimate skill premium in China. It shows that the substitution elasticity of capital and labor in China is less than one, but the substitution elasticity of skilled labor and unskilled labor stays more than one, which means technological change appears biased and the substitution effect of skilled and unskilled labor is obvious. There is no significant difference between the real situation and the one estimated by technological change biased model, which confirms skill premium is the result of skill-biased technological change. And the biased effect is increasing. Meanwhile, the regression test results also find that skill-biased technological change has a significant positive effect on the skill premium, which proves that the skill premium is mainly caused by skill-biased technological change in China.

Key words: Skill Premium, Skill-biased Technological Change, Nonlinear Seemingly Unrelated Regression