The blender kicks on, and your three-year-old jumps like a firework just went off. Then come the tears, then the hiding behind your legs, and twenty minutes later he's still not quite himself. Your friend's toddler barely looked up from his waffle. You find yourself wondering whether your little one is just sensitive, or whether something else is going on.
If that sounds familiar, you may have come across the term Moro reflex. Most parents know it from the newborn days (those arms flinging out the second you set baby down!). It usually quiets down in the first months, and when it seems to stick around, it can be one piece of the puzzle for a child who startles big and struggles to settle.
Sound like your kiddo? You don’t have to sort it out alone. In a 15-minute virtual call, tell us what you’re seeing at home and we’ll help you figure out a next step, whether that’s a few play ideas to try, keeping an eye on things, or a visit with one of our OTs in Philly.
What Is the Moro Reflex?
The Moro reflex, also called the startle reflex, is an automatic response babies are born with. A loud sound, a sudden change in position, a bright light, or an unexpected touch can set it off: arms fling out, hands open wide, and then baby pulls back in, often with a cry. It's a protective reflex, and in the newborn months it's completely expected.
As the brain matures and babies spend time moving on the floor, the startle usually softens and fades, most often somewhere in the first several months, though every baby's timeline is a little different. More grown-up responses gradually take over. Kids still flinch at a loud bang (we all do!), but most recover quickly. More on how floor time supports this in Why Movement Is Essential for Your Baby's Brain Development.
What Does a "Retained" Startle Reflex Mean?
When therapists call a reflex "retained," we mean it still seems to show up more than we'd expect for a child's age. It isn't a diagnosis, and it isn't anyone's fault. It's one lens we use, alongside sensory processing, regulation, and motor skills, when a child seems to be working extra hard to feel settled.
A child with a big startle isn't being dramatic or "overreacting." Their body may simply be reacting faster and bigger than the moment calls for. Research here is still emerging, and we try to be honest about what it does and doesn't show. We walk through the studies in Reflex Integration Therapy: What the Research Really Says.
Signs Worth a Closer Look in Toddlers and Children
Every child startles sometimes, and every toddler has big feelings. What we pay attention to is a pattern that shows up most days and gets in the way of play, sleep, or family life. A startle reflex that's hanging around may show up as:
Big reactions to small surprises: jumping, crying, or hiding at the blender, the hand dryer, or a barking dog, and taking a long time to calm down.
A hard time in busy places: birthday parties, the grocery store, or a packed Saturday morning at Smith Memorial Playground feel like too much.
Unexpected touch feels like a lot: pulling away from surprise hugs, a bump in line, or scratchy tags.
Always on alert: scanning the room, struggling to settle for a story or a meal, and seeming wiped out after busy days.
Changes and transitions are tough: new places, new people, or a change in routine bring big worries or meltdowns.
Cautious about movement: avoiding swings, slides, or uneven ground, or losing balance easily.
One or two of these alone is usually just part of being little. Several together, most days, is worth a closer look. Back to that blender moment: the jump itself isn't what we'd watch, it's the twenty minutes afterward. These patterns can overlap with other things, so we always look at the whole child. For more on how little nervous systems learn to settle, read Social-Emotional Regulation Across Early Years: From Newborn Cues to Preschool Self-Control.
Wondering if your child's big startle is more than a phase?
How Occupational Therapy Can Help
Here at B.well, a retained reflex is never treated as a stand-alone problem. Our pediatric occupational therapists start with a functional assessment: how your child moves, plays, handles sound and touch, and recovers after a surprise, plus what you're seeing at home.
If the startle seems to be part of the picture, therapy is play-based: movement games for strength and body awareness, heavy work like pushing and climbing, swinging and balance play at your child's pace, breathing games, and small changes that make busy moments easier. Reflex-focused activities are one piece of a bigger plan. The goal isn't a perfect reflex test, it's a child who can bounce back from surprises and get back to playing.
Curious how this looks in a session? Read Primitive Reflex Integration in Occupational Therapy, or learn more about occupational therapy at B.well tots. For families who want more support in a shorter stretch of time, our Neuro.well intensives in Wyndmoor offer short, focused blocks of therapy.
Simple Ways to Help at Home
You don't need special equipment to start. A few ideas our families like:
Give a heads-up: narrate the noise before it happens ("Blender in 3, 2, 1!"), or let your child be the one to press the button.
Build in heavy work: carrying the groceries, pushing a laundry basket, climbing, or animal walks before a busy outing.
Make a calm corner: a cozy spot with pillows and favorite books to retreat to when things get loud.
Keep movement playful and child-led: swinging, rocking, and rolling at your child's pace, never forced.
Preview what's coming: talk through new places and changes ahead of time, and keep daily routines predictable.
Stay close after a startle: a calm voice, a firm hug if they want one, and a minute to recover before moving on.
We explain why heavy work can feel so calming in What Is Proprioception? The Secret Sense That Helps Your Child Feel Calm and Connected.
Getting Support in Philly
If your child startles big, has a hard time settling, or seems on edge more often than not, you don't have to figure it out alone. Book a 15-minute virtual consult at bwelltots.com/consult, tell us what you're noticing, and we'll help you decide whether to keep watching, try a few things at home, or schedule an evaluation with our OTs and PTs.
We see families in Fishtown, Fairmount, and Wyndmoor, with daytime sessions that fit around naps and preschool pickups, and nannies and caregivers are always welcome.
Still wondering about that big startle? Let’s talk it through together.
And back to that blender morning. Our hope, for that little guy and for yours, is the day the blender is just a blender: a quick jump, maybe a giggle, and right back to breakfast.
Coming soon: From Startle to Steady. Over the next few weeks we’re walking through the reflexes babies are born with, one at a time, starting with the newborn startle and moving on to rooting, grasping, rolling and crawling. Want the science side first? Start with Reflex Integration Therapy: What the Research Really Says.
Not in Philly? About 1 in 7 of our readers aren’t. You can still come along. Kelsey writes Beyond the Checklist, a free newsletter on whole-child development, feeding, reflexes and the parts of parenting that don’t fit on a milestone chart.
This post is for educational purposes and isn't a substitute for individualized medical advice.