What Is Sensory Processing in Children? What Parents Need to Know

Sensory processing is one of those terms
that appears frequently in conversations
about child development and behavior —
and is rarely explained clearly enough
to be genuinely useful to parents.
Understanding how children process
sensory information — and what happens
when that processing is different from
typical — is one of the most practical
things a parent can know.

This article covers what sensory processing
actually is, what sensory processing
differences look like in children,
and what the research shows about
supporting children who experience
the world differently through their senses.

What Sensory Processing Actually Is

Sensory processing refers to the way
the nervous system receives, organizes,
and responds to sensory information
from the environment and from the body.
Most people are familiar with the
five traditional senses — sight, hearing,
touch, taste, and smell. Research on
sensory processing adds two additional
sensory systems that are less commonly
known but critically important:

Proprioception — the sense of
body position and movement,
provided by receptors in muscles,
joints, and tendons. Proprioception
tells us where our body is in
space without having to look at it.

Vestibular sense — the sense
of balance and spatial orientation,
provided by the inner ear.
The vestibular system tells
us whether we are moving,
how fast, and in what direction.

Research by A. Jean Ayres —
an occupational therapist and
neuroscientist whose foundational
work in the 1960s and 1970s
established the framework for
understanding sensory processing —
described sensory integration as
the neurological process by which
the brain organizes sensation
from the body and the environment
and uses this information to
function effectively in daily life.

When sensory processing works
well — when the brain efficiently
organizes and responds to sensory
input — children can focus,
learn, regulate their emotions,
and engage with their environment
without being overwhelmed or
under-stimulated by sensory experience.

When sensory processing is
different from typical — when
the brain processes sensory
input in ways that are significantly
more or less sensitive than average —
children may find everyday sensory
experiences genuinely challenging
in ways that are not always
visible or understood by the
adults around them.

What Sensory Processing Differences
Look Like

Research on sensory processing
differences identifies two broad
patterns — though individual
children often show a combination
of both across different sensory systems:

Sensory over-responsivity —
the child’s nervous system
responds to sensory input
more intensely than typical.
What feels mildly uncomfortable
to most people may feel genuinely
painful or overwhelming to
a sensory over-responsive child.

Signs of sensory over-responsivity:
Strong negative reactions to
clothing textures — seams,
labels, certain fabrics.
Distress at loud sounds that
others find tolerable —
hand dryers, crowds, music.
Extreme reactions to certain
food textures, tastes, or smells.
Discomfort with light touch —
preferring firm pressure to gentle touch.
Avoidance of messy play —
sand, paint, mud.
Difficulty in busy, noisy environments
like shopping centers or school cafeterias.

Sensory under-responsivity —
the child’s nervous system
responds to sensory input
less intensely than typical.
These children may seem to
not notice sensory experiences
that others would find significant —
or may actively seek intense
sensory input to reach a
level of stimulation that
feels adequate to their nervous system.

Signs of sensory under-responsivity:
Seeming not to notice pain,
heat, or cold that would
affect most children.
Constantly seeking intense
physical input — crashing,
jumping, bumping into things.
Difficulty noticing when
hands or face are dirty.
Seeking very spicy, sour,
or intense flavors.
Needing to touch everything.
High pain tolerance.

Sensory seeking — closely
related to under-responsivity,
sensory seeking describes children
who actively and intensely
pursue sensory experiences —
movement, touch, sound, taste —
in ways that can appear as
hyperactivity, impulsivity,
or behavioral difficulty.

The Relationship Between Sensory
Processing and Other Conditions

Research on sensory processing
differences finds they are
significantly more common in
children with certain developmental
conditions:

Autism spectrum conditions —
research finds that sensory
processing differences are
present in the majority of
autistic children and are
now included in the diagnostic
criteria for autism spectrum disorder.

ADHD — research finds significant
overlap between sensory processing
differences and ADHD, with
many children showing features of both.

Anxiety — research finds
bidirectional relationships
between sensory over-responsivity
and anxiety — sensory overwhelm
can trigger anxiety, and anxiety
can amplify sensory sensitivity.

However sensory processing differences
also occur in children without
any other developmental diagnosis —
as an independent variation in
how the nervous system is wired,
rather than as a feature of
another condition.

What the Research Shows About
Supporting Children With Sensory
Processing Differences

Understanding before labeling behavior.
Research on sensory processing
and child behavior finds that
many behaviors that adults interpret
as naughty, defiant, or attention-seeking —
the child who refuses to wear
certain clothes, who melts down
in the supermarket, who cannot
sit still — may reflect genuine
sensory experiences that the
child lacks the language or
the cognitive capacity to explain.

Understanding the sensory basis
of behavior changes the response
from discipline to support —
and research finds that support
is significantly more effective
than discipline for sensory-driven behavior.

Environmental modification.
Research on sensory processing
and environmental design finds
that modifying the sensory
environment — reducing noise,
adjusting lighting, providing
sensory breaks, allowing
movement — significantly reduces
sensory-driven behavioral difficulty.

Practical modifications:
Removing clothing tags and
choosing soft, seamless fabrics.
Using noise-cancelling headphones
in overwhelming environments.
Providing a quiet space for
sensory recovery.
Allowing movement breaks during
tasks requiring sustained attention.
Offering alternative food textures
rather than forcing difficult ones.

Sensory diet. Research on
occupational therapy interventions
for sensory processing differences —
including work by Patricia Wilbarger
on the sensory diet concept —
finds that providing children
with regular, planned sensory
input throughout the day —
specifically matched to their
sensory needs — improves
regulation, attention, and behavior.

A sensory diet is not a food
diet. It is a personalized
activity plan that provides
the specific types of sensory
input a child’s nervous system
needs to stay regulated —
developed in consultation
with an occupational therapist.

Occupational therapy. Research
on occupational therapy interventions
for sensory processing differences —
particularly Ayres Sensory Integration
therapy — finds evidence of
benefit for children with
sensory processing difficulties,
particularly for goal-directed
functional outcomes. An occupational
therapist with sensory integration
training is the appropriate
professional to assess and
support a child with significant
sensory processing differences.

Validation and understanding.
Research on children’s experience
of sensory processing differences
finds that children who feel
understood — whose sensory
experiences are believed and
accommodated rather than dismissed —
show better emotional outcomes
than those who are consistently
told that their reactions are
excessive or wrong.

A child who is told “it doesn’t
hurt that much” or “stop being
so dramatic” about a genuine
sensory experience learns to
distrust their own perception —
with significant consequences
for self-concept and self-regulation.

When to Seek Professional Assessment

A conversation with your pediatrician
is warranted when:

Sensory responses are significantly
more intense than peers of
the same age and are not
improving over time.

Sensory difficulties are significantly
affecting daily functioning —
eating, dressing, school participation,
peer relationships.

Sensory-driven behavioral difficulties
are not responding to consistent
environmental modifications and support.

You have concerns about other
aspects of development alongside
the sensory difficulties.

An occupational therapist with
sensory integration training
is typically the most appropriate
professional for assessment
and intervention planning.

Try This This Week

Practice 1 — The Sensory Observation Journal
What it is: A brief daily
observation practice that
helps parents identify their
child’s specific sensory
patterns — the triggers,
the responses, and the
conditions that help.

How to do it: For one week,
after any significant sensory
reaction — a meltdown, a
refusal, a seeking behavior —
note three things:

What sensory input preceded it?
(sound, touch, movement, taste, smell)
What was the child’s response?
What helped the child recover?

After one week, look for
patterns. Most children with
sensory processing differences
have consistent triggers and
consistent regulatory supports
that a brief observation period makes visible.

Why it works: Research on
sensory processing and intervention
finds that identifying a child’s
specific sensory profile —
their particular sensitivities
and their particular regulatory
supports — is the essential
first step in providing effective support.
The Sensory Observation Journal
builds this profile through
simple daily observation.

Practice 2 — The Sensory Break
What it is: A proactive,
regular sensory break built
into the child’s daily routine —
providing regulatory sensory
input before the child reaches overwhelm.

How to do it: Identify two
or three times each day —
before transitions, before
demanding tasks, after school —
to provide a brief, regulating
sensory activity:

For sensory seekers:
jumping on a trampoline,
wall push-ups, carrying
something heavy, a tight squeeze hug.

For sensory avoiders:
a quiet space with dim lighting,
noise-cancelling headphones,
a weighted blanket, slow deep breathing.

Keep it brief — five to
ten minutes — and consistent.

Why it works: Research on
sensory regulation and behavior
finds that proactive sensory
input — provided before the
child reaches a dysregulated
state — is significantly more
effective than reactive management
after dysregulation has occurred.
The Sensory Break prevents
overwhelm rather than responding to it.

Practice 3 — The Sensory Vocabulary Builder
What it is: A deliberate
practice of giving children
language for their sensory
experiences — building the
self-awareness and communication
capacity that helps them
ask for what they need.

How to do it: When your
child shows a sensory response —
positive or negative — name
it with sensory language:

“That sound is really loud
for you — your ears are
feeling overwhelmed.”
“You love that heavy pressure —
it helps your body feel settled.”
“That texture feels really
uncomfortable on your skin.”
“You need to move — your
body is telling you it needs
more input.”

Over time, ask the child
to use the language themselves:
“What is your body telling you right now?”

Why it works: Research on
sensory processing and self-regulation
finds that children who develop
language for their sensory
experiences show better self-regulation
and better ability to communicate
their needs — reducing the
behavioral expression of
sensory difficulty as verbal
expression becomes available.
The Sensory Vocabulary Builder
provides this language deliberately and consistently.

The Bottom Line

Sensory processing differences
are real, common, and genuinely
affect children’s daily experience
in ways that adults do not
always see or understand.

The child who refuses to
wear certain clothes, who
cannot tolerate the school
cafeteria, who crashes into
everything, or who melts down
in the supermarket is not
being difficult. They are
experiencing a nervous system
that processes sensory information
differently — and they need
understanding, accommodation,
and support rather than correction.

Research is clear about what helps most:
understanding the sensory basis
of behavior, modifying the
environment where possible,
providing regular sensory input
matched to the child’s needs,
and giving the child language
for their experience.

And where difficulties are
significant — occupational therapy,
delivered by a trained professional,
makes a genuine difference.

Sources

Ayres, A. J. (1979).
Sensory Integration and the Child.
Western Psychological Services.

Miller, L. J., Anzalone, M. E.,
Lane, S. J., Cermak, S. A., &
Osten, E. T. (2007).
Concept evolution in sensory integration.
American Journal of Occupational Therapy,
61(2), 135–140.

Schaaf, R. C., & Davies, P. L. (2010).
Evolution of the sensory integration
frame of reference.
American Journal of Occupational Therapy,
64(3), 363–367.

Marco, E. J., Hinkley, L. B.,
Hill, S. S., & Nagarajan, S. S. (2011).
Sensory processing in autism.
Neurotherapeutics, 8(2), 268–277.