Researchers at Frontiers in Developmental Psychology asked a surprising question: can babies who are just 8 months old actually feel left out? To find out, they brought 54 babies into a room and had them watch two adults play a ball-tossing game. Some babies were included in the game, while others were deliberately ignored.
Using eye-tracking technology (cameras that follow where a baby's eyes look), the scientists measured how babies responded to the social rejection, then tested how quickly they could shift their attention away from pictures of faces.
Rejection slows babies' ability to look away from faces
Babies who had been left out of the game showed a striking response: they were slower to stop looking at faces and seemed almost frozen in their attention. These excluded babies also smiled less and fussed more compared to babies who had been included. The researchers suggest that social rejection may have made these babies more focused on trying to understand social cues—a defensive response.
Self-regulation skills act as a buffer against feeling left out
Not all babies reacted the same way. Babies who naturally had stronger self-regulation skills—the ability to manage their own attention and emotions—bounced back faster from rejection. They could look away from faces more easily, even after being excluded. This suggests that some babies are born more resilient, and this trait can protect them from the negative effects of social experiences.
Why this matters for your baby's development
This research shows that emotional and social development begins far earlier than many parents realise. Your 8-month-old is already learning whether their world is responsive and inclusive. While you cannot avoid all moments of exclusion in daily life, the study suggests that consistent, responsive interactions build your baby's capacity to handle social ups and downs.
The findings are limited to a single study with a small sample size and tested only in a lab setting, so results may not apply to all babies or all situations. However, the research reinforces what many parents intuitively know: babies benefit from feeling included in family life.
How to support your baby's social confidence
- Create daily one-on-one moments of eye contact and face-to-face interaction through singing, playing, and responding to your baby's sounds.
- Include your baby in family activities and conversations, even when they cannot yet participate verbally—they are learning they belong.
- Accept your baby's natural temperament; sensitivity and attentiveness to social cues can become emotional strengths with consistent support.