
© Enoch Lai (Creative Commons)
Children as young as 4 years old may reap better health from altruistic giving,
a behavior that tends to be less common among kids from high-income families, according to new research on the nature and nurture of altruism published in
Psychological Science, a journal of the Association for Psychological Science.
"The findings provide us with a new understanding of how children's altruistic behaviors, family wealth, and physiological health are intertwined," says psychological scientist and lead researcher Jonas Miller of the University of California Davis.
Previous research has shown that altruism, or giving that is personally costly, can promote both physical and psychological well-being in adults. This new study extends this research to young children, investigating how their nervous systems respond during altruistic acts and how altruism is related to family wealth.
In the study, the research team recruited 74 pre-schoolers (average age 4 years old) from the local community. In the lab, the researchers played with the children one by one and explained that they would earn tokens that they could trade for prizes at the end of their visit.
As part of the visit, researchers attached (with parental consent) electrodes to each child's torso to collect physiological data, including information about heart rate and vagal tone. Vagal tone indicates the influence of the vagus nerve, which connects the brain with other key organs and provides a useful measure of the body's ability to regulate physiological stress responses. High vagal tone is related to feeling safe and calm, says Miller, and has been associated with better physical health, behavior, and social skills among young children.
Comment: Information theory and memory of water, anyone?