How to Treat a Retained Moro Reflex

Treating a retained Moro reflex centers on movement-based exercises designed to replay and gradually mature the reflex pattern until the brain no longer needs it. There is no pill, surgery, or single clinical visit that resolves it. Instead, practitioners and parents use structured, repetitive body movements, often daily, that walk the nervous system through the developmental sequence it skipped or stalled on. The approach sounds simple, and in practice it is, but the evidence behind it is still catching up with the clinical enthusiasm, and knowing what works, what doesn’t, and who can help matters.

What a Retained Moro Reflex Looks Like After Infancy

The Moro reflex is a whole-body startle response that healthy newborns display when they sense a sudden drop, loud noise, or loss of support. The arms fling outward, the fingers spread, and then the arms pull back toward the chest in a grasping motion. In evolutionary terms, this likely served as a clinging response, much like infant primates grabbing onto their mother’s fur during movement.¹ In typical development, the reflex fades by about four to six months of age as higher brain centers take over voluntary motor control.

When it doesn’t fade, the reflex doesn’t keep appearing in its full dramatic form. Instead, fragments of the pattern linger. A child or adult with a retained Moro reflex may startle more easily than peers, react strongly to unexpected sounds or light changes, and have difficulty calming down once startled. The nervous system stays on a hair trigger. In practice, this can look like anxiety, sensory sensitivity, motion sickness, poor balance, difficulty with transitions, or an exaggerated fight-or-flight response that seems out of proportion to whatever set it off. Research on children with autism has found higher levels of primitive reflex retention compared to typically developing children, and those retained reflexes were connected to emotional and behavioral difficulties.²

The Moro as a Gateway Reflex

One of the more useful findings for anyone thinking about treatment is the idea that the Moro reflex acts as a kind of gatekeeper for other primitive reflexes. Research on boys aged seven to ten found that retention of the Moro reflex had both direct and indirect relationships with symptoms of ADHD and with performance in math. The same study found a pattern consistent with the Moro acting as a gateway for the inhibition of three other primitive reflexes: the tonic labyrinthine reflex, the asymmetrical tonic neck reflex, and the symmetrical tonic neck reflex.³

This matters practically because it means addressing the Moro reflex early may help the other retained reflexes resolve more easily. If you or your child’s therapist is dealing with a cluster of retained reflexes, the Moro is often a logical starting point. Think of it as a domino: once it falls, the others become easier to tip. Therapists who work in reflex integration typically assess multiple reflexes at once for this reason, since treating the Moro in isolation misses the pattern.

The Core Treatment Approach

Reflex integration programs share a common logic. Because primitive reflexes are movement patterns that the brain was supposed to practice, complete, and then file away during infancy, the treatment replays those patterns deliberately. For the Moro specifically, that usually means exercises in which you lie on your back, open your arms and legs wide in a starfish position (mimicking the extension phase of the reflex), then slowly curl inward, bringing the knees to the chest and wrapping the arms around the legs (mimicking the flexion or “clinging” phase). This is repeated daily for weeks or months, giving the brainstem repeated signals that the movement has been completed and can be archived.

Programs vary in the details. Some add breathing patterns, having you inhale during the extension phase and exhale during the flexion phase. Some add eye movements or head positions. Some incorporate rocking, rolling, or crawling patterns that address related reflexes at the same time. The common thread is slow, controlled, rhythmic repetition of the reflex pattern in a calm setting, the opposite of the sudden, alarming stimulus that originally triggers the Moro.

Sessions are typically short, sometimes only five to ten minutes, but need to happen consistently. Most practitioners recommend daily practice for at least six to twelve weeks before expecting noticeable changes, though some children show shifts within a few weeks. The exercises are gentle enough that parents usually do them at home with their children between clinical visits.

What the Evidence Actually Shows

This is where anyone researching retained reflexes should slow down and get honest about the science. Movement-based programs aimed at integrating primitive reflexes are widely used by occupational therapists, developmental optometrists, and educational therapists. The theoretical logic is sound, and many practitioners report meaningful improvements. But the research base is uneven.

A systematic review of the relationship between persisting primitive reflexes and motor and cognitive development in children found that while some studies suggest movement-based programs may reduce reflex retention and improve selected motor and cognitive outcomes, the evidence is heterogeneous. The review stressed that these approaches should not be viewed as standalone treatments but rather as potential complementary strategies within a broader developmental or educational framework.⁴

One specific program that gets a lot of attention is Rhythmic Movement Training, which uses rhythmic, rocking-style movements modeled on the spontaneous movements babies make. A randomized controlled trial comparing rhythmic movement training to a placebo condition in typically developing children found no statistically significant differences between the groups.⁵ That doesn’t mean rhythmic movements are useless, but it does mean that the specific program tested in that trial didn’t outperform the placebo in the short term for that group. It’s worth noting that the study involved typically developing children rather than children with clearly retained reflexes, which limits how far you can generalize the results.

Another well-known protocol, the Masgutova Neurosensorimotor Reflex Integration program (MNRI), was compared to a sensory integration program in children with cerebral palsy. Both groups improved significantly in gross motor function and in control of primitive reflexes after three months of treatment at three sessions per week. However, there was no significant difference between the MNRI group and the sensory integration group.⁶ Both approaches worked, but neither proved superior to the other. That’s actually reassuring in a sense: it suggests that structured, therapeutic movement of any kind can help with reflex integration, and you’re not locked into one branded program.

Choosing a Practitioner

Occupational therapists are the most common professionals who work with retained reflexes, though developmental optometrists, physiotherapists, and some chiropractors also offer reflex integration as part of their practice. Training in reflex integration is still being developed as a formal clinical skill. A study of occupational therapy students in India who completed a short online primitive reflex integration training program found that while their factual knowledge scores didn’t significantly improve, their ability to apply reflex integration techniques did improve significantly.⁷ The takeaway: hands-on application skills matter more than textbook knowledge, so look for a therapist who has practical, supervised experience with reflex testing and integration exercises rather than just a certificate from a weekend course.

When evaluating a practitioner, a few things are worth asking about. First, do they assess a range of primitive reflexes, not just the Moro? Given the gateway relationship between the Moro and other reflexes, a comprehensive assessment gives a much clearer picture. Second, do they combine reflex work with other therapeutic strategies? The research is clear that reflex integration works best as part of a broader developmental plan, not as a standalone miracle cure.⁴ Third, are they willing to teach you the exercises so you can do them at home? The daily repetition is what drives change, and a once-a-week clinic visit without home practice is unlikely to accomplish much.

The Connection Between Retained Reflexes and Eye Movements

One of the less obvious effects of retained primitive reflexes, and one that directly affects school performance, is the impact on how the eyes move. A study that tracked eye movements before and after a reflex inhibition program found significant improvements in several measures of oculomotor function. After the reflexes were addressed, participants showed better fixation, smaller saccades (the quick jumps the eyes make when scanning text), improved ocular motility, and better visual balance between the two eyes.⁸

The researchers suggested that oculomotor improvements reflected broader maturational processes being unlocked by reflex inhibition, and that the whole reorganization was key to future reading and attentional processes.⁸ If a child is struggling with reading, tracking text across a page, or losing their place while reading, and they also show signs of a retained Moro reflex, the visual difficulties may not be a separate problem. They could be downstream consequences of the same immature neurological wiring. This is why developmental optometrists sometimes screen for retained reflexes as part of a vision assessment.

What You Can Do at Home

While professional guidance is valuable, many families start working on retained reflexes at home, either because they don’t have access to a trained therapist or because they want to supplement clinic visits. Here are exercises and strategies specifically targeting the Moro reflex that come from the reflex integration approach:

Starfish-to-ball: Lie on your back and open your arms and legs wide, as if making a snow angel. Hold for a breath. Then slowly curl into a ball, hugging your knees to your chest. Repeat ten to fifteen times, keeping the movements slow and deliberate. The goal is to “complete” the reflex pattern consciously.
Slow rocking: In the curled ball position, gently rock side to side or forward and back. This provides vestibular input in a controlled, predictable way, the opposite of the sudden loss of support that triggers the Moro.
Prone play and tummy time: For younger children, extended time on the stomach strengthens the postural muscles that compete with the Moro reflex pattern. Crawling is especially useful because it integrates bilateral coordination and builds the higher motor patterns that are supposed to replace primitive reflexes.
Deep pressure activities: Heavy blankets, firm hugs, compression clothing, or activities like pushing a loaded cart can calm an overactive startle response. These don’t integrate the reflex per se, but they reduce the nervous system’s overall state of alert, making the reflex less likely to fire.

Consistency matters more than duration. A few minutes every day will generally accomplish more than a long session once a week. Many families build the exercises into bedtime routines, since the slow, rhythmic quality of the movements also helps with calming down before sleep, a common trouble spot for children with retained Moro reflexes.

Managing the Emotional Side

A retained Moro reflex is fundamentally a stress-response issue. The nervous system gets flooded with adrenaline and cortisol at triggers that shouldn’t warrant that level of alarm. Over time, this chronic startle response can look identical to anxiety, and in many cases, the child or adult has been treated for anxiety or sensory processing difficulties without anyone identifying the underlying reflex pattern.

Research has shown that children with autism who have higher levels of retained primitive reflexes also tend to have more emotional and behavioral problems.² While that study was specific to autistic children, the principle applies broadly: a nervous system that is constantly being startled will produce emotional dysregulation, irritability, and fatigue. This means that treatment is not just about doing exercises. It also means reducing unnecessary triggers in the environment while the reflex is being integrated. Predictable routines, advance warning before loud noises or sudden changes, dimmer lighting, and minimizing visual clutter can all make a meaningful difference in daily comfort.

Adults with a retained Moro reflex sometimes describe a lifelong pattern of being “jumpy,” having trouble sleeping, feeling overwhelmed in busy environments, or needing to sit with their back to the wall in restaurants. These are not personality traits. They are neurological patterns, and they respond to the same movement-based integration exercises that work for children, just with more self-awareness about the process.

Why the Moro Reflex Gets Retained in the First Place

Several factors can interfere with the normal developmental sequence that should archive the Moro reflex. Difficult births, including very fast deliveries, C-sections, and birth trauma, are commonly cited by practitioners. Premature birth, illness during the first months of life, and limited opportunities for movement during infancy (such as extended time in car seats, swings, or containers that restrict free movement) can also play a role. The reflex itself is a vestibular response, triggered by the sensation of falling, and it naturally shows some interesting asymmetry even in healthy newborns. Research on one- to five-day-old infants found that in over 80 percent of cases, the right arm responded with a shorter onset time than the left, suggesting a built-in spinal asymmetry that exists from birth.⁹

Knowing the cause doesn’t change the treatment, but it can relieve guilt. Parents sometimes worry that they caused the problem by not providing enough tummy time or by using a baby swing too much. In reality, any number of factors can keep the reflex from integrating on schedule, and many of those factors are outside anyone’s control. The brain remains plastic enough to complete the process later, which is exactly what reflex integration exercises take advantage of.

Red Flags and Realistic Expectations

Be cautious of practitioners who claim that reflex integration will cure ADHD, autism, dyslexia, or anxiety outright. The evidence shows associations between retained reflexes and these conditions, not that retained reflexes are the sole cause.³ Integrating the Moro reflex may reduce certain symptoms, particularly the sensory sensitivity, startle response, and emotional reactivity components, but it is unlikely to eliminate a complex neurodevelopmental condition on its own. The most responsible framing, and the one supported by the systematic review literature, is that reflex integration is a complementary strategy that works best alongside other interventions like occupational therapy, behavioral support, and educational accommodations.⁴

Progress is usually gradual. Families often notice changes in sleep quality, emotional regulation, or tolerance for sensory input before they see changes in academic performance or social behavior. Some children regress temporarily when they first start the exercises, becoming more irritable or clingy for a week or two before improving. Therapists who work in this area consider that a normal part of the process as the nervous system reorganizes, but if regression lasts more than a few weeks, it’s worth checking in with the treating professional to adjust the program.

1
PubMed. The Moro reaction: More than a reflex, a ritualized behavior of nonverbal communication
2
PubMed. Relationship of the Persistent Primitive Reflexes to Emotional and Behavioral Problems in Autistic and Typically Developing Children
3
International Journal of Special Education. Primitive Reflexes and Attention-Deficit/Hyperactivity Disorder: Developmental Origins of Classroom Dysfunction
4
Acta Psychologica. Persisting primitive reflexes and motor and cognitive development in children: A systematic review
5
PubMed Central. Short-term effects of craniosacral therapy and rhythmic movement training on developmental assessment scores and primitive reflex expression in typically developing children: a randomized controlled trial
6
PubMed. Sensory integration versus Masgutova neuro-sensorimotor reflex integration program on controlling primitive reflexes and gross motor abilities in children with diplegic cerebral palsy
7
Journal of Occupational Therapy Education. Primitive Reflex Integration Training for Occupational Therapy Students in India
8
PubMed Central. Persistence of primitive reflexes associated with asymmetries in fixation and ocular motility values
9
ScienceDirect (Neuropsychologia). A critical examination of the Moro response in newborn infants—Symmetry, state relation, underlying mechanisms