世界经济 ›› 2017, Vol. 0 ›› Issue (3): 26-51.

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收入不平等与经济增长关系的再检验

雷欣, 程可, 陈继勇   

  1. 武汉大学经济与管理学院 湖北省武汉市武昌区八一路299号 430072
  • 出版日期:2017-03-10 发布日期:2017-01-04
  • 作者简介:雷欣:leixin@whu.edu.cn
  • 基金资助:
    作者感谢教育部人文社科青年基金项目"外商直接投资与中国适度收入不平等问题研究(11YJC790075)"、国家自然科学基金青年项目"中国收入再分配制度的效应评估与优化设计(71203167)"、国家社科基金重大项目"一带一路相关国家贸易竞争与互补关系研究(16ZDA039)"和"全球产业链转移新趋势下的中国出口价值链提升举措研究(15ZDA061)"的资助。

A Re-examination of the Relationship between Income Inequality and Economic Growth

Lei Xin, Cheng Ke, Chen Jiyong   

  • Online:2017-03-10 Published:2017-01-04
  • Contact: 2017-4-7

摘要: 本文重新检验收入不平等与经济增长的关系,区分了由环境差异导致的收入不平等(机会不平等)和由努力差异导致的收入不平等(努力不平等)的差异,利用2003-2013年的CGSS微观数据测算了衡量机会不平等与努力不平等的基尼系数,并构建增长回归模型,检验两类不平等对中国经济增长的影响效应。研究结果显示:收入不平等与经济增长之间不存在显著关系,但努力不平等对经济增长具有显著的正向促进作用,机会不平等对经济增长具有显著的负向抑制作用。本文认为,努力不平等对经济主体的劳动和投资行为具有正向激励效应,这在一定程度上抵消了机会不平等对经济主体生产性行为带来的逆向激励,从而弱化了收入不平等对经济增长的不利影响。

关键词: 机会不平等, 努力不平等, 经济增长, ", 反事实", 收入, 参数法

Abstract: In this paper, we attempt to interpret the relation between income inequality and economic growth by re-examining these two phenomena. First, we distinguish the opportunity inequality caused by environmental variations from effort inequality induced by differences in effort. Then, we calculate the Gini coefficient, which measures the opportunity inequality and effort inequality, by using 2003-2013 CGSS data. Finally, we construct the growth regression model to examine effects of these two kinds of inequality on China's economic growth. The empirical results show that the effort inequality has a significantly positive effect on economic growth, while the opportunity inequality has a significantly negative effect. Meanwhile, the real income inequality is not significantly related to economic growth. Therefore, we argue that the effort inequality, which is caused by the heterogeneity in individual behaviors, has a positive effect on labor and investment behavior. To a certain extent, it offsets the negative incentive caused by opportunity inequality, and thus weakens the adverse effect of income inequality on economic growth.

Key words: inequality of opportunity, inequality of effort, economic growth, "counterfactual", income, parametric method

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