收入不平等对经济增长的倒U型影响:理论和实证被引量：23

The Inversed-U Effect of Income Inequality on Long-term Economic Growth:From Theoretical and Empirical Perspectives

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摘要文章致力于从理论和实证两个维度,探讨收入不平等对长期经济增长"先促进后阻碍"的"倒U型"影响。文章首先基于一个拉姆齐模型,从理论上证明这一"倒U型"关系的存在;其次是构建实证模型,根据跨国横截面数据,分别运用OLS和GMM估计方法从实证的角度检验这一"倒U型"关系的存在。实证结果显示:GMM估计方法要优于OLS估计方法,在其他条件不变情况下,收入不平等有一个合理区间,如果以基尼系数衡量不平等程度,这一数值处于0.37-0.40之间。当一国初始收入不平等程度低于最优值时,可以通过提高收入不平等程度来加快经济增长的速度;反之,则应通过降低收入不平等程度来促进经济的增长。 The paper is committed to explore the inverted-U effects of income inequality on long-run economic growth from the theoretical and empirical perspectives. Firstly, based on a Ramsey model, the paper proves that the inverted-U relationship does exist from the theoretical perspective. Secondly, it constructs an empirical model and collects cross-sectional data to test the inverted-U relationship by using OLS and GMM methods. The results show that GMM method is superior to the OLS method. With the other conditions remaining unchanged, the income inequality has a reasonable range and this value is from 0. 37 to 0. 40 if the inequality degree is measured by GINI coefficient. If the level of income inequality is lower than the optimal value, economic growth can be improved by enlarging income inequality; otherwise, it should shorten income inequality to quicken economic growth.

作者刘生龙

机构地区清华大学国情研究中心

出处《财经研究》 CSSCI 北大核心 2009年第2期4-15,共12页 Journal of Finance and Economics

基金北京市科委博士生论文资助专项基金资助编号:ZZ0752

关键词收入不平等经济增长基尼系数 GMM估计 income inequality economic growth GINI coefficient GMMestimation

分类号 F061.3 [经济管理—政治经济学]

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参考文献22

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二级参考文献14

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