**A recent study conducted by UCL researchers has uncovered the significant link between maternal language and infant oxytocin levels.** By observing 62 mothers interacting with their infants, aged 3-9 months, the research highlighted how mothers who frequently described their child's thoughts or feelings—known as mental state talk—had infants with higher oxytocin levels. **Oxytocin** is a hormone instrumental in forming social bonds and understanding, including the crucial attachment between a mother and child. The study, published in *Development and Psychopathology*, introduces a newfound *psychobiological pathway* where a mother's emotionally sensitive language profoundly influences her infant's hormonal and social development. The researchers, including lead author Dr. Kate Lindley Baron-Cohen, emphasize that earlier ability to describe infants' internal states correlates with better future social and emotional development. However, it was also noted that mothers experiencing postnatal depression used less mental state talk, suggesting potential avenues for supporting these mothers in fostering their child's social growth. This groundbreaking study was backed by multiple prestigious organizations, illustrating a strong interest in understanding and enhancing foundational mother-child interactions.