Hold a newborn at the distance from your elbow to your face and she'll look at you, and go on looking, longer than at anything else in the room. That distance isn't a coincidence and neither is the looking.
What can a newborn see?
A lot less than people assume, and exactly enough.
She focuses best at around twenty to thirty centimeters, which is the distance to your face when she's being held or fed. Beyond that it blurs. She sees high contrast far better than color, so black and white patterns hold her attention when pastels don't, and her color vision fills in over the following months.
Her visual acuity at birth is very poor by adult standards. What she has instead is a strong preference for a particular arrangement of shapes, and a face at feeding distance is that arrangement.
Why are faces so compelling?
Because the preference is present essentially from birth, before there has been any time to learn it.
Newborns tested within an hour of birth will turn their heads and eyes further to follow a moving face-like pattern than to follow the same features scrambled. That finding, that the bias exists at minutes old, is what makes it interesting, because it means she isn't preferring your face because she has learned it's important. She arrives predisposed to track that arrangement, and the learning happens afterwards.
It's an efficient piece of design. A newborn who can't move, can't reach and can't tell you anything is entirely dependent on the adults around her, and a built-in bias toward looking at them is how the relationship starts.
How the seeing develops
What's the still-face experiment
The demonstration that made this concrete for me is one to understand rather than watch, because watching it is uncomfortable. A mother plays with her baby normally, face to face, and then, on cue, she holds a completely neutral expression and stops responding while continuing to look at her. Within a very short time the baby works hard to bring her back, smiling, pointing, reaching, vocalizing, and when none of it works she becomes distressed and turns away. Then the mother resumes, they repair, and the baby recovers. Two things come out of it. The first is how early it works: babies of a few months old clearly expect a response and aren't merely reacting to a stationary object. The second is the part I think counts more, and it's the part the clips on the internet cut off. The repair is what she takes from it. Nobody is responsive all the time, and the finding isn't that a neutral face damages a baby. It's that coming back works.
I'd put that alongside what the attachment research consistently shows, which is that security comes from the reliability of repair. That's a relief for anybody who has been on their phone.
How to use it in the first months
Almost all of it is free and most of it you're doing already.
- Hold her at twenty to thirty centimeters and let her look. That's a complete activity for a newborn.
- Exaggerate slowly, and leave gaps. The pause is her turn, and adults fill it far too quickly.
- Copy her. Stick your tongue out and wait; many newborns will attempt it back, which is startling the first time.
- Talk while she watches, so the face and the voice arrive together.
- Change which arm you hold her in, so both eyes get the work.
- Skip the black-and-white flashcards. Your face does everything they do and it responds.
- Skin-to-skin, which puts her at exactly the right distance without anybody arranging anything.
As a physiotherapist I'd add one thing about position, and this one is inside my training. A baby doing this work needs a stable head and trunk to look properly, so supported upright against your chest or on your lap gives her more than lying flat does. Varying which side she turns to counts, because a baby who always turns the same way to find a face develops a preference that can flatten one side of the head and tighten the neck, and it's far easier to prevent than to correct.
When it changes
Around two to three months her focus sharpens and her eyes begin working together, and the social smile arrives, the one directed at you and not the reflex from sleep.
By four months she's tracking across the room, and faces begin competing with everything else, which is when feeding gets difficult in a busy room. By six to eight months she can tell familiar faces from strangers reliably, and stranger wariness arrives, which is a developmental achievement and doesn't feel like one when your mother-in-law is holding her.
The preference doesn't disappear. It becomes specific, and she stops being interested in faces and starts being interested in yours.
When is it good to know to a doctor
Most variation is ordinary. These are the ones to raise, and to raise early.
- Not following a face or an object with her eyes by around three months.
- No social smile by around three months.
- Eyes that don't move together, or an eye that turns in or out consistently, at any age after about four months.
- A white or unusual reflection in the pupil in a photograph, which needs prompt assessment.
- No response to sound, or no turning toward a voice.
- A marked reduction in eye contact, or loss of a skill she previously had, which warrants prompt attention.
- No gestures, pointing, waving, showing, by twelve months.
Check hearing early if anything on that list applies, because intermittent hearing loss is common, easily missed and affects social responsiveness, and ask sooner than feels necessary. I've never met a parent who regretted asking too early, and I've met several who waited.
The evidence
- Johnson, Dziurawiec, Ellis & Morton (1991), Cognition 40(1-2):1-19, Newborns' preferential tracking of face-like stimuli and its subsequent decline
- Tronick, Als, Adamson, Wise & Brazelton (1978), J Am Acad Child Psychiatry 17(1):1-13, The infant's response to entrapment between contradictory messages in face-to-face interaction
- NHS. Baby's vision and hearing checks
This guide is general information, written to help you understand a topic and ask better questions. It is not medical advice and does not replace your own doctor, midwife or paediatrician. Anything that worries you about your baby belongs with them.