Systematic review of sensory integration therapy for individuals with disabilities: Single case design studies.
Sensory integration therapy has no solid single-case support—use functional assessment and behavior-based interventions instead.
01Research in Context
What this study did
The team hunted for every single-case paper on sensory integration therapy (SIT) for people with developmental disabilities.
They found 17 studies published between 1975 and 2012.
Each study had at least one child or adult who received SIT for behavior or skill problems.
What they found
No study gave clear proof that SIT worked.
The better the design, the smaller the benefit.
In most papers, positive effects vanished when the researchers added a second baseline or checked if the change lasted.
How this fits with other research
van der Miesen et al. (2024) looked at 145 single-case SIB studies from the same years.
Their meta-analysis shows huge drops in self-injury when teams use functional-analysis-based plans.
The two papers sit side-by-side: SIT shows nothing, FA-based plans show a lot.
Frank-Crawford et al. (2024) also scanned single-case work and found the same weak spot—most papers skip maintenance and social-validity checks.
So the SIT field is not alone in thin follow-up data, but it is alone in lacking any strong wins.
Why it matters
If a parent asks for SIT, you now have clean evidence to pivot.
Say, “Let’s test why the behavior happens, then build a plan that changes that cause.”
You will save hours of brushing joints and swinging on scooters, and you will likely see faster, larger gains.
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02At a glance
03Original abstract
Sensory integration therapy (SIT) is a controversial intervention that is widely used for people with disabilities. Systematic analysis was conducted on the outcomes of 17 single case design studies on sensory integration therapy for people with, or at-risk of, a developmental or learning disability, disorder or delay. An assessment of the quality of methodology of the studies found most used weak designs and poor methodology, with a tendency for higher quality studies to produce negative results. Based on limited comparative evidence, functional analysis-based interventions for challenging behavior were more effective that SIT. Overall the studies do not provide convincing evidence for the efficacy of sensory integration therapy. Given the findings of the present review and other recent analyses it is advised that the use of SIT be limited to experimental contexts. Issues with the studies and possible improvements for future research are discussed including the need to employ designs that allow for adequate demonstration of experimental control.
Research in developmental disabilities, 2015 · doi:10.1016/j.ridd.2015.09.022