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Massive internal migration in China has greatly disadvantaged children who are left behind. This study unravels the mechanism underlying the association between parental migration and children's mental health through the lenses of social networks and gender. Using data collected in Sichuan, one of the provinces with the largest number of left-behind children in China, this study finds that maternal and paternal migration differ in their associations with left-behind children's depressive symptoms. While paternal migration is not associated with children's mental health, maternal migration is found to be significantly correlated with children's depressive symptoms. Moreover, the negative association is also detected in children with mothers who returned from migration destinations. However, such an association does not vary between sons and daughters. We also find that the negative association between maternal migration and left-behind children's mental health is partly explained by children's delinquent social ties. Children who have experienced or are experiencing maternal migration are more likely to make friends who exhibit delinquent behavior. Such friendships are further associated with left-behind children's vulnerability to depressive symptoms. This demonstration of the intersectionality of social networks and gender contributes to the literature on family, migration, and health.
Du et al. (Sat,) studied this question.