A groundbreaking two-decade longitudinal study reveals the profound impact of hugs and skin-to-skin contact between mothers and infants on developing empathy that lasts into adulthood.
Published in PNAS on February 22, 2021, this Israeli research tracked 100 individuals from birth to adulthood, demonstrating that frequent cuddling fosters greater empathy later in life. Participants came from stable two-parent families with incomes above the poverty line, allowing researchers to isolate the effects of early physical interactions.
To assess mother-infant contact, the study divided participants into three groups: full-term healthy babies with ample maternal physical contact; premature infants incubated without skin-to-skin contact for at least two weeks; and premature babies whose mothers provided at least one hour of daily skin-to-skin contact for two weeks.
Findings showed that early maternal contact promotes social synchronization—a harmonious alignment of emotional responses—persisting from infancy through adulthood. Brain imaging further revealed heightened activation in two key areas: the amygdala and insula.
The amygdala, located in the temporal lobe, processes the unconscious recognition of emotions. The insula integrates bodily signals with others' emotional cues, enabling empathy.
These social synchronizations emerge as early as three months and endure lifelong, underscoring the vital role of nurturing parents. While focused on mother-child bonds, researchers note that involved fathers likely yield similar benefits for empathy development.
