What Your Newborn Is Learning to Do (0–3 Months)

In one minute

• Newborns arrive with a starter kit of reflexes — rooting, grasping, startling — that fade on their own over the coming months.
• Head control, eye tracking, and hand-to-mouth movements build gradually between weeks 2 and 12.
• The first real social smile tends to show up around 6–8 weeks.
• These are ranges, not deadlines: healthy babies vary a lot in exactly when each one shows up.

The reflexes baby is born with

Your newborn didn't need to learn to root — turning toward a touch on the cheek, mouth open — or grasp, closing their fingers around anything that touches their palm. These are wired in before birth and usually fade by 4–6 months as the brain's higher control centers mature. The startle (Moro) reflex, that dramatic full-body flinch, typically settles by around 2 months. None of this needs practice from you; it's simply how a newborn nervous system is built.

Weeks 2–12: little steps forward

In the first couple of weeks, movements are jerky and head control is minimal. By around 8 weeks, most babies can briefly lift their head during tummy time — always awake and supervised, never a place for baby to sleep; if they doze off, move them onto their back in their crib or bassinet — and start following a face or object with their eyes for a few seconds. By 8–12 weeks, head control keeps improving, hands start finding their way to mouths, and eye tracking gets steadier and more deliberate. Cooing — sounds beyond crying — usually picks up from around 6 weeks on.

The first real smile

Somewhere around 6 to 8 weeks, many babies offer their first true social smile — a response to your face or voice, not just a reflex. It's a genuinely big moment, but it's also fine if it shows up a bit earlier or later; brief eye contact and social engagement keep building steadily from 8 weeks onward.

When to call your pediatrician: no rooting or sucking reflex at all, no startle response by 2 weeks, no cooing or vocal sounds by 8 weeks, no attempts at eye contact by 2 months, or a baby who seems unusually stiff, floppy, or asymmetric.

Sources

1. CDC (2024). Learn the Signs. Act Early. https://www.cdc.gov/act-early/milestones/index.html
2. PMC/NCBI (2022). Evidence-Informed Milestones for Developmental Surveillance Tools. https://pmc.ncbi.nlm.nih.gov/articles/PMC9680195/
3. CDC (2024). Positive Parenting Tips: Infants 0–1 Years. https://www.cdc.gov/child-development/positive-parenting-tips/infants.html