Previous studies on social stratification and intergenerational mobility have mostly focused on the effects of parents on their children’s socioeconomic status (SES) attainment, but less attention has been paid to the important role played by grandparents in the life chances of their grandchildren, and its underlying mechanism. By analyzing a national survey sample data of junior high school students in China, this study examines the influence factors of living with grandparents and their effect on the academic performance of adolescents, and the intermediate mechanism. The study finds that (a) three-generation cohabitation occurs when there is a functional need for the nuclear family, and children with lower SES, working mothers, or single-parent families are more likely to experience cohabitation between grandparents and grandchildren; (b) living with grandparents has significant positive effects on adolescents’ academic performance after controlling for other factors; (c) the effect of living with grandparents is moderated by the family’s SES and family structure, and students from lower-SES or single-parent families benefit more from living with grandparents; and (d) living with grandparents to a certain extent benefits grandchildren’s academic performance by enhancing family social capital investment. Households in which grandparents cohabit invest significantly more in the social capital of children than those who do not have grandparents cohabiting. The results of this study show that in modern society, family kinship networks still play a very important role in the status attainment and social mobility of individuals. Therefore, scholars should pay more attention to the important role of extended families in social stratification and mobility and its micro-mechanisms.
The quality of communication between spouses raised in nuclear and single-parent families
