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本文基于2010年珠三角和长三角外来务工者调查的数据,利用内生转换回归模型克服自选择导致的估计偏误,分析不同类型的同乡聚集对农民工收入的影响。研究发现:(1)同乡聚集对农民工收入有着显著的正向影响;(2)在选择效应上呈现双向强化特征,即无论是聚集者还是非聚集者均选择了增进自身利益的工作类型;(3)基于初职与现职阶段的比较分析发现,不同聚集类型在农民工职业发展不同阶段的收入效应呈现不同的趋势。
Based on the survey data of migrant workers in the Pearl River Delta and the Yangtze River Delta in 2010, this paper uses the endogenous transformation regression model to overcome the estimation bias caused by the choice, and analyzes the impact of different types of fellow population aggregation on the migrant workers’ income. The findings are as follows: (1) There is a significant positive effect on the income of migrant workers from fellow townspeople; (2) Two-way reinforcing characteristics appear on the selective effect, that is, both the aggregators and non-collectors choose the type of work that enhances their own interests; (3) Based on the comparative analysis of initial stage and present stage, it is found that the income effect of different types of aggregation in different stages of migrant workers’ career development presents different trends.