
Kari is eight months old, and she’s been a cheerful and outgoing baby. She’s always smiled at people and delighted in experiences the world around her.
But not today.
When her mother brings in a new babysitter, she’s surprised by her reaction. Not only does Kari fail to smile and respond to her but, as the sitter reaches out to touch her, Kari clings closely to her mummy and begins to whimper. A few minutes later when mum tries to leave the room, Kari’s distress turns into full-blown sobs. What has happened to her happy, outgoing baby?
Kari’s reactions to the new babysitter are normal. By around 7-9 months, most babies begin to show fear. Often this fear shows up when babies see unfamiliar people, like a new babysitter or a family member they haven’t seen for awhile. This fear is called ‘stranger anxiety.’ Babies also begin to show fear when their parents or caregivers leave them with others, even if it is at home or some other familiar place. This fear is called ‘separation anxiety’. Although these fears can seem troubling, don’t worry – children all around the world develop these fears at about the same age.
Why does fear develop around 7-9 months? Some researchers believe children begin to show fear when they are able to compare something they know and remember, with something they don’t recognise. They view stranger anxiety as a result of children’s increasing ability to remember and recognise familiar faces and places. In other words, as children get better at knowing the difference between familiar and unfamiliar faces, they may become more fearful of faces they don’t know.
Others believe that fear is more biologically ‘programmed’. For these researchers, an unfamiliar face or situation is a natural clue to danger. They believe infants may be programmed to fear strange faces and settings as part of a survival strategy, because any strange or unfamiliar creature could be potentially threatening.
Whatever the reason, stranger anxiety is a normal part of a child’s development that begins around 7-9 months. For example, one study observed a group of babies as they grew from age four months through to 12 months. Here’s how it worked.
Each month, researchers watched the babies’ reactions as they were approached by someone they didn’t know. These ‘strangers’ walked up to the babies, greeted them, picked them up and held them. Even with the mother present, many children began frowning, whimpering, or crying with the stranger at eight months. By nine months, 79% of the babies showed fearful reactions.
In other studies, researchers have found that how the stranger acts makes a difference. When the strangers approached more slowly and didn’t try to touch or pick up the baby, babies showed less stranger anxiety. The same was true when the mother or a familiar caregiver was present.
But why does my 11-month-old start crying and fussing when I leave her with a familiar babysitter? There’s nothing strange about the person or the place, yet her reaction is very different than just a few months ago. This is separation anxiety. It usually appears somewhere between 6-8 months, gets stronger up to 14-18 months and gradually becomes less frequent and less intense as the baby gets older.
Research has shown that most young children get upset when their mothers or other familiar caregivers leave them alone, even for brief periods of time. Once again, there are different opinions about why this happens, but most believe that children grow to feel a strong attachment to their parents or caregivers and that seeing them leave is scary.
Children are unique, and they will respond in different ways to strangers and to being separated from you. Fear is a very normal reaction – just another part of growing older. Be open to trying different things as your baby develops and trusts your instincts. As your child grows, remember that these powerful fears (and the tears) will begin to fade over time.