A study by an American doctor also showed that the more frequent the touch of skin against skin between mother and baby in the early years, the more the mother couldn't bear to give the child to anyone else--this is helpful to mother-infant bonding.
美國一位醫師的研究也發現，母子早期的肌膚接觸愈頻繁，媽媽會愈捨不得把孩子交給他人，有助於母子間建立起強固的情感（mother-infant bonding）。