Quick Answer Newborn reflexes are automatic, involuntary movements that indicate normal neurological development. These reflexes—such as the Moro (startle), rooting, sucking, and grasp reflex—are present at birth and gradually integrate […]
Newborn reflexes are automatic, involuntary movements that indicate normal neurological development. These reflexes—such as the Moro (startle), rooting, sucking, and grasp reflex—are present at birth and gradually integrate (fade) as the baby’s brain matures. Pediatric providers use these reflexes as part of early neurological assessment. Variations can occur, but absent, asymmetrical, or persistent reflexes should be evaluated by a healthcare provider.
Newborns enter the world with a set of built-in responses.
These are not learned behaviors.
They are reflexes—automatic movements that occur without conscious control.
For new parents, these movements can sometimes feel surprising.
A sudden startle. A tight grasp. A head turning quickly toward touch.
Without context, these responses can seem unusual or even concerning.
In reality, they are expected and important.
Newborn reflexes provide insight into how the nervous system is functioning and developing in the earliest weeks of life.
Newborn reflexes are controlled by the brainstem and are part of early neurological function.
According to the National Library of Medicine, these reflexes are present at birth and are gradually replaced by voluntary movements as the brain develops.
They serve important roles in:
Reflexes are not something a baby “chooses” to do.
They are automatic responses to specific stimuli.
(medlineplus.gov)
The Moro reflex is one of the most noticeable newborn reflexes.
When a baby is startled—by a sudden movement, sound, or change in position—they may:
This reflex is a normal response to sudden stimuli.
The American Academy of Pediatrics notes that the Moro reflex typically begins to fade around 2 to 4 months of age as the nervous system matures.
(aap.org)
The rooting reflex helps babies find a food source.
When the baby’s cheek or mouth area is touched, they will turn their head toward the stimulus and open their mouth.
This reflex supports early feeding.
It is particularly important for breastfeeding and bottle feeding, helping the baby locate the nipple.
The rooting reflex usually becomes less pronounced by around 3 to 4 months as feeding becomes more voluntary.
The sucking reflex works alongside rooting.
When something touches the roof of the baby’s mouth, they begin to suck.
This reflex is essential for feeding and is present from birth.
According to the CDC infant feeding guidance, coordinated sucking and swallowing are critical for effective feeding in early infancy.
Over time, sucking becomes more controlled and purposeful.
(cdc.gov)
When a finger or object is placed in a newborn’s palm, they will instinctively grasp it.
This reflex can feel surprisingly strong.
The grasp reflex is present at birth and typically fades by around 5 to 6 months, making way for voluntary grasping and reaching.
This transition marks an important developmental shift from reflexive to intentional movement.
When a newborn is held upright with their feet touching a flat surface, they may make stepping movements.
This is known as the stepping reflex.
It does not indicate that the baby is ready to walk.
Instead, it is a reflexive pattern that disappears within the first couple of months and later re-emerges as voluntary movement when development allows.
Also known as the “fencing position,” this reflex occurs when a baby turns their head to one side.
The arm on that side extends, while the opposite arm bends.
This reflex is part of early motor development and typically fades by around 5 to 7 months.
Newborn reflexes are not just interesting—they are clinically important.
Healthcare providers assess reflexes to evaluate:
According to the National Institutes of Health, reflex assessment is part of routine newborn examinations.
Reflexes provide early information about neurological health.
(ncbi.nlm.nih.gov)
One important aspect of reflexes is symmetry.
Both sides of the body should respond similarly.
For example:
Asymmetry may warrant further evaluation.
Parents who notice differences between sides should bring this to their pediatric provider’s attention.
Newborn reflexes are expected to integrate over time.
This means they gradually disappear as voluntary control develops.
If reflexes:
a healthcare provider may recommend further assessment.
This does not always indicate a problem, but it should be evaluated.
Parents do not need to “test” reflexes regularly at home.
These assessments are part of routine pediatric care.
However, understanding what is normal can help reduce concern when reflexes are observed during daily care.
For example:
These are signs of normal development—not something to correct.
Newborn reflexes are part of how babies interact with the world before they have voluntary control.
They support feeding, movement, and early development.
Over time, these reflexes fade as the brain matures and intentional movement takes over.
Understanding reflexes helps parents interpret what they are seeing with more confidence.
And in doing so, it shifts the perspective from uncertainty to understanding—recognizing these movements as part of a healthy, developing system.
The Newborn Care Solutions Agency is the only newborn care placement agency founded by an internationally accredited training provider. Based in Scottsdale, Arizona, the agency serves families nationwide by connecting them with rigorously vetted, professionally trained Newborn Care Specialists.
All content is grounded in established pediatric and neurological development research.
For more information, visit thencsa.com or call (602) 695-6775.
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