I am better because of your expectation: Examining how left-behind status moderates the mediation effect of perceived parental educational expectation on cognitive ability among Chinese rural students

Background: Chinese rural students have been documented to have relatively delayed cognitive development. From an ecological system perspective, empirical studies have identified the significant effect of the proximal environment on Chinese rural students' cognitive development. Yet, little do we know the mechanism behind that. More importantly, how the mechanism differs among rural students with different left-behind characteristics remains obscure. Methods: Drawing longitudinal data from a nationally representative survey, this study examines the interrelations between rural students' parental educational expectation perception, their own educational expectation, and cognitive ability. Two models were examined using path analysis. The first mediation model tests the mediating effect of educational expectation between the association of parental educational expectation perception and cognitive ability, while the second moderated mediation identifies the moderating effect of rural students' left-behind status on the association between their parental educational expectation perception and educational expectation. Results: The first mediation analysis reveals that rural students' perception of parental educational expectation is positively correlated with their educational expectation, which further positively correlated with their cognitive ability. The following moderated mediation analysis suggests that students' left-behind status significantly moderated the effect of their perceived parental educational expectations on their own educational expectation. Conclusions: Chinese rural students' perception of parental educational expectation affects their cognitive ability through their own educational expectations. The number of migrant parents within a family further moderates the indirect effect of education expectation.