What science says about sensory integration

I will say honestly. Sensory integration is a topic where there is a huge difference between marketing and science. So as a sensory therapist I try to be careful with promises.

This text is about what research actually shows, and what to realistically expect from sensory therapy.

Three different things under one name

People often confuse three things called "sensory integration."

• A natural brain process. Every person has sensory integration, the brain constantly combines signals from different systems. This is a basic function of the nervous system.
• Ayres Sensory Integration (Ayres SI or ASI). A structured therapeutic approach developed by Anna Jean Ayres. Conducted by a certified occupational therapist. A specific methodology with quality principles (fidelity).
• "Sensory games," "sensory room," "sensory pool." Just activities with various materials. This is not Ayres SI. It can be pleasant but is not considered full-fledged therapy.

The difference is important. When someone says "we do sensory integration," ask what exactly. Because it can be any of these three.

What Ayres SI is in practice

A classic ASI session is a special room with swings, balance boards, balls, climbing nets, heavy objects. Through play, the therapist creates situations where the child receives specific sensory stimuli (movement, pressure, touch) and learns to process them.

This is not "playing with balls." It is structured work according to a specific plan and with specific goals.

If the therapy is called ASI, ask about the certificate. CASI (Certified in Ayres Sensory Integration) or similar is the standard. If there is no certificate, this is not real ASI but an imitation of it.

What research shows

Here the honest answer is complicated. And necessary.

Early research. Several small randomized controlled trials (RCTs) showed improvement in motor and play skills in children with autism after ASI.

A 2022 RCT (138 children) did not find that ASI has a reliable advantage over ordinary therapy. This large quality study cast doubt on effectiveness.

Meta-analyses. Some point to a moderate effect for motor skills and adaptation, others are doubtful about effectiveness at all.

AAP (American Academy of Pediatrics) in its statement wrote that the evidence base of sensory integration therapy is limited and inconclusive.

AOTA (American Occupational Therapy Association) in newer reviews reports moderate evidence for individual functioning goals, if therapy is conducted competently and according to the model.

NICE (United Kingdom) summarizes: there is limited evidence that ASI can improve sensory problems, but large studies are lacking.

Conclusion. Not "fraud." Not "the gold standard." Somewhere in between.

What to realistically expect

ASI can help with specific things. Not "cure," but precisely help.

• Better tolerance of sensory stimuli. Fewer episodes due to noise or texture.
• Improvement of motor skills, coordination.
• Better participation in daily activities, food, clothing, play.
• Fewer tantrums due to sensory overload.
• Better participation in learning (through regulation before lessons).

These are specific, limited, measurable goals. Not "the child changed completely."

What NOT to expect

This is an important part.

• Sensory integration does NOT cure autism. No serious organization, WHO, NICE, AAP, AOTA, says it is a "treatment." It is support for regulation.
• Sensory integration does NOT "launch speech." There is a connection between sensory work and speech, an overloaded child communicates worse. But therapy itself does not give words.
• Sensory integration does NOT "remove" ADHD or cerebral palsy. It can help with regulation but does not cure the diagnosis.
• Sensory integration does NOT guarantee a result for every child. It works for some, for others it is less effective. This is normal for any therapy.

If someone promises otherwise, this is marketing, not science.

What honest therapy looks like

A good specialist will say approximately this.

"Your child has such and such a sensory profile. I suggest working on these specific goals. In 2-3 months we will check progress. If there is no result, we will review the plan or stop. There are no guarantees, but there are grounds to try."

This is honest. This is science.

If you hear "we will guaranteed help in one course," "100% result," this is marketing.

An ethical moment

As a sensory therapist I will say. The field of sensory integration in Ukraine is varied. There are qualified specialists who work honestly. There are people who took a short course and call themselves "sensory therapists," promising miracles.

It is not your task to know the scientific literature. Your task is to ask the right questions and believe your eyes. What do you see in the child's state after 2-3 months? Are there changes in real life, not in the therapist's office?

If there are, continue. If not, ask about changing the plan. If the therapist is offended by questions, look for another.

What is next

Read "Sensory support at home: what is safe and what is not." There it is specific about what you can do yourself without therapy.

If you have not yet read the other materials, start with "What sensory processing is and why it is not whims."