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Resource Library/Retained & Disordered Reflexes

Retained reflexes, explained

Someone at the OT gym mentioned your child’s “Moro” or “ATNR” and you nodded like you knew what that meant. Here’s what those words actually describe, what parents tend to notice at home, and how to tell whether it’s worth chasing.

●Last reviewed August 2026 · details change — confirm with official sources

Read this first

This is parent-to-parent guidance, not medical advice. Nothing here diagnoses anything — reflex screening belongs in the hands of an occupational therapist or physician who can actually put hands on your kid.

What primitive reflexes are

Babies are born with a set of automatic movement patterns — press here, this happens, every single time. They run out of the brainstem, below the level of thought, and they have jobs: help the baby get born, help the baby find the breast, help the baby learn where their arms are before they know they have arms.

These are called primitive reflexes, and they’re supposed to be temporary. As the brain matures over the first year or two, higher control comes online and those automatic patterns get folded into voluntary movement. Therapists call that integration — the reflex doesn’t vanish, it gets absorbed and outranked.

The main ones, translated

  • Moro — the startle. A sudden noise, light, or head-position change makes the arms fling open, then clutch back in. It’s a baby-sized alarm system, normally quiet by around 4–6 months.
  • ATNR (asymmetrical tonic neck reflex) — the “fencing” pose. Turn the head to one side and that arm and leg straighten while the other side bends. It helps with birth and with the discovery of hands.
  • STNR (symmetrical tonic neck reflex) — head down, arms bend and legs straighten; head up, arms straighten and legs bend. This one shows up around crawling age and is a stepping-stone to hands-and-knees.
  • Spinal Galant — stroke alongside the spine and the hip swings toward that side. Helpful during birth; irritating on a school chair.
  • TLR (tonic labyrinthine reflex) — head tips back, the whole body extends; head tips forward, the body curls. It’s the earliest scaffolding for balance and posture.
  • Palmar grasp — pressure in the palm and the fingers curl closed. The famous finger-squeeze.
  • Rooting and sucking — touch the cheek, the head turns toward it and the mouth gets ready to feed.

So what does “retained” mean?

A retained reflex is one that never fully got outranked. It still fires in the background — so instead of moving freely, your child is quietly working against an automatic pattern all day long. Think of trying to write a paragraph while someone gently tugs your elbow. You can do it. It just costs you far more than it costs everyone else.

Reflexes can also resurface temporarily under stress, exhaustion, illness, or after an injury, and integration commonly runs late in kids with neurological or developmental differences. This is not a moral failing of anyone’s nervous system.

What parents actually notice

Nobody spots a reflex. What you spot are clusters — a handful of stubborn things that never seemed related until someone connected them:

  • The wiggle cluster (often linked to spinal Galant): can’t stay in a chair, hips constantly shifting, waistbands and tags are unbearable, bedwetting past the age you expected, plus a short fuse for anything requiring sitting.
  • The handwriting cluster (often ATNR): white-knuckle pencil grip, head turning or the paper spinning sideways, losing their place when reading, tiring after two sentences, real trouble crossing the middle of the body to reach the far side of the page.
  • The desk-posture cluster (often STNR): W-sitting, legs wrapped around chair legs, head propped on one hand, slumping into the table, and copying from the board being far harder than the actual work.
  • The startle cluster (often Moro): jumps at everything, hypersensitive to sound and light, motion sickness, anxious about sudden change, big reactions that arrive before any thinking could have happened.
  • The balance cluster (often TLR): toe walking, car-sickness, dislikes having their head tipped back at the sink, poor sense of where their body is in space, tires fast on stairs and playgrounds.
  • The mouth cluster (often rooting or suck): messy eating, drooling, mouth open at rest, sensitivity around the face, chewing everything.

One item on this list is just a kid. A whole cluster that has outlasted every strategy you’ve tried is worth mentioning to a professional.

An honest word about the research

We’re not going to oversell this. Two different claims live under the same heading, and they don’t have the same amount of evidence behind them.

Well established: primitive reflexes exist, they follow a known timeline, and pediatricians check some of them at well visits. Studies do repeatedly find retained reflexes more often in children with learning, attention, and coordination difficulties.

Still evolving: whether doing a specific set of reflex-integration exercises causes improvements in reading, attention, or behavior. Those studies are mostly small, and the results are mixed. “Retained reflexes” is also not a standalone medical diagnosis, which is why insurance rarely uses the phrase.

Where that leaves you: reasonable to explore, especially inside a broader OT plan. Not a replacement for proven supports like speech therapy, structured reading instruction, or ADHD care. And a real reason to be skeptical of anyone promising to cure autism or ADHD with reflex work, or asking for a large package paid up front.

What actually helps

  1. Get a full OT evaluation, not a reflex checklist

    Good practice is to screen reflexes as part of a broader look at sensory processing, motor coordination, core strength, and visual skills. If a provider only looks at reflexes, you’re getting a narrow answer to a wide question.

  2. Expect short, daily, boring repetition

    If a home program is recommended, it works through frequency, not effort — a few minutes most days over several months. Consistency beats intensity here more than almost anywhere else in this world. Ask when you’ll reassess and what changing would look like.

  3. Fix the environment while you wait

    Feet supported on the floor or a box, a slanted surface for writing, a fatter pencil, movement before homework, tagless shirts, softer waistbands, seating away from the busiest wall. These help immediately and cost nothing.

  4. Rule out the plain medical stuff

    Bedwetting deserves a pediatrician conversation first — constipation, urinary infections, and sleep-disordered breathing are common and treatable drivers. Motion sickness, headaches, and reading fatigue can also point toward a vision evaluation. Reflex work should never be the first and only stop.

  5. Ask the provider three questions

    “What else are you evaluating besides reflexes?” “What does the home program look like and how long until we reassess?” “Do you bill insurance, and under what?” A confident, specific answer to all three is a good sign.

Who to call around here

Village families start with SOAR — you’ll find them, along with every other pediatric OT we know of in Murfreesboro and surrounding areas, in the OT directory. If your child already has an OT, just ask at the next session: “Have you looked at retained reflexes with him?” It’s a completely normal question and most pediatric OTs have an opinion ready.

Meanwhile, the movement and heavy-work ideas on our parenting tips page overlap heavily with what these programs do — regulation first, always.

Still not sure if this is your kid?

Bring the cluster. Write down the five things that don’t seem related and come to the Wednesday group — someone there has probably chased the same list. Details on the about page, or message us and we’ll point you toward the right person. New guides land in the weekly newsletter first.