经济增长与收入差距的关系是一个古老而又充满活力的问题。研究发现,尽管全国总量时序数据的Granger因果关系检验表明,中国的经济增长与收入差距不存在任何方向的因果关系,但以各省GDP增长率和城乡收入比为观测点的面板数据检验结果显示:不论是在短期还是在长期,收入差距的扩大都是引起经济增长的Granger原因;经济增长在短期会引起收入差距的扩大,但从长期看,有助于收入差距的缩小。
It is central for China's policymaking to deal with the relationship between economic growth and income inequality.Although our causality test using the time series indicates no any direction causality relations between GDP growth rates and income ration of urban to rural,the tests using the provincial panel data show that income inequality causes economic growth and growth has positive effects on growth in the short run but negative impact in the long term.