人力资本投资的需求受到经济个体的时间偏好、生产能力与预期收益率等因素的影响。同时,收入差距和公共财政政策都会影响到人力资本投资供给曲线的变动。这造成了不同个体之间在人力资本投资上的差异,产生了他们之间的人力资本差距和收入差距。我国现行的公共财政政策已经成为收入差距快速增长的重要原因。
The demand of human capital investment is affected by individuals' time preferences, production abilities, expected rate of returns, and so on. On the other hand, income differences and public financial policies could affect the supply. All these lead to differences of human capital investments of different individuals, and differences of human capital and income differences. Chinese current public financial policies have becoming the main source of rapid growth of income difference.