{
  "id": 10692408,
  "title": "Shared smiles may shape infants' emotional development",
  "url": "https://urgent.news/2026/09/29/shared-smiles-may-shape-infants-emotional-development",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-29T12:50:10.000Z",
  "source": {
    "name": "Medical Xpress",
    "slug": "medical-xpress",
    "url": "https://medicalxpress.com/news/2026-09-infants-emotional.html"
  },
  "original_language": "en",
  "account": "A new study published in Philosophical Transactions of the Royal Society B: Biological Sciences has found that positive interactions between infants and their mothers during the first year of life may shape infants' emotional development. Researchers measured heart rates of nearly 1,000 4-month-old babies as they engaged in positive exchanges with their mothers, such as smiling and laughing. These interactions led to physiological changes in the babies, including increased heart-rate variability, which is a measure of emotion regulation and adaptability to different environments. The study suggests that positive social interactions, rather than just play or individual emotional expressions, are crucial for the baby's physiological and emotional well-being. The research also found that babies at 8 months were more likely to initiate and reciprocate smiles, indicating a growing ability to modulate their emotions in response to social cues. This early social bonding appears to lay the foundation for healthy emotional regulation skills later in life.",
  "summary": "A mother and her baby smiling at each other is more than a heartwarming exchange—this type of positive interaction may help babies develop emotion regulation skills and the physiological foundations of emotional well-being.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}