The influence of intergenerational support on cognitive functioning among middle-aged Chinese: Moderation by personal income

OBJECTIVE: To analyze the effects of personal income on the relationship between intergenerational support (IS) and cognitive functioning. METHODS: Data were obtained from four waves of nationally representative surveys of the 2011-2018 China Health and Retirement Longitudinal Study (CHARLS), involving 8,207 participants aged 45 ∼ 60 at baseline. Multivariate linear regression models using generalized estimating equations were used to analyze the effects of three forms of intergenerational mutual supports on cognitive functioning in middle-aged adults, and subgroup regressions were used to analyze the moderating role of personal income in this relationship. RESULTS: The results showed that financial and caregiving support from children impaired the cognitive functioning of their parents; whereas providing financial support to children and mutual emotional support with them positively affected their cognition; however, childcare was not significantly associated with cognitive levels in middle-aged adults. Moreover, the effect of IS on the cognitive level of Chinese middle-aged people disappeared or was attenuated by having pensions or earning their own post-tax income. CONCLUSION: IS has a significant effect on cognitive functioning in middle-aged adults, but this effect is moderated by personal income. These results are informative for the development of intergenerational relationship intervention programs for the prevention of cognitive decline in middle-aged adults with different personal income.