Theories of human development informed by cultural anthropology and evolutionary biology suggest that aspects of human prosociality are influenced by grandparents' interactions with grandchildren. Yet, the traditional focus within developmental psychology on European American nuclear families has yielded little empirical work on this topic. Recognizing the prevalence of live-in grandparents in Latinx communities, we conducted a preregistered study with young Latinx children (N = 250, M child age = 5.02 years old). The study was intentionally designed to take place within the supermajority Latinx neighborhoods of Los Angeles County. These are low-income, urban neighborhoods with high rates of grandparent involvement with grandchildren. Because the study took place during the COVID-19 pandemic, we set up a mobile lab in an outdoor setting, which allowed us to use an experimental, prosocial behavioral-choice task that involved random assignment. Predicted probabilities from a logistic regression model showed that Latinx children with grandparents living at home were 1.56 times as likely to exhibit prosocial choice behavior as those who did not have grandparents living at home, and this effect was significant while controlling for other preregistered covariates (education, economic insecurity, gender, age, etc.). These findings of an association between the presence of Latinx grandparents and children's prosociality contribute to our understanding of Latinx psychology and child-rearing. The findings also have broader implications for theories of culture, socialization, and prosociality.
Public Significance StatementGrandparents can occupy a central place in the lives of their grandchildren, but the potential role of grandparents has been understudied in research on the development of prosociality in young children. Our findings suggest that Latinx grandparents play a role in fostering prosocial values and choices in their young grandchildren. These findings help broaden our understanding of the origins and development of human prosociality, while also providing new information for programs designed to empower grandparents of all backgrounds to help children flourish.