人力资本通过四个效应作用于居民收入差距:一是扩张效应——不同居民之间初始人力资本存量的差异和人力资本积累速度的差异,会拉大人力资本差距,进而拉大居民收入差距;二是平等化效应——随着人力资本积累的推进和人力资本存量 Human capital through four effects on the income gap between residents: First, the expansion effect - different residents of the initial stock of human capital stock differences and the speed of human capital accumulation will widen the gap of human capital, thereby widening the income gap between residents; Second, the equalization effect - with the accumulation of human capital and the human capital stock