The word “attachment” is used to describe a child’s feelings and security towards their parent or carer. As your baby grows you will notice behaviours that will tell you that this is developing. John Bowlby was the first to talk about this relationship that babies develop with their caregivers.
A baby is at the height of developing their attachment style at around 10 months old when you may notice that they cry when you leave the room or don’t like strangers. This is normal and shows good development.
By 10 months a baby will have learnt to identify who around them makes them feel safe and secure. They will also have learnt who makes them feel better when they are sad, frightened or lonely, hungry or cold.
The Institute for Health Visiting has further reading about attachment.