A mother's touch is often said to be crucial in helping her bond with her child, but new research suggests babies may even be able to recognise it while still in the womb.
Unborn infants have been recorded reaching out to touch the wall of the uterus in response to their mother caressing her bump during pregnancy.
Using three-dimensional ultrasound videos, scientists were able to watch how unborn children reacted to different people touching their mother's abdomen, reports Daily Mail.
The strongest response came when a mother rubbed her own stomach compared to when a stranger or the child's father did, suggesting the infant recognised who was involved.
It may also explain why mothers often feel their babies moving when they touch their stomach but someone else might not detect any motion.