Sensory Integration Inventory–Revised for Individuals with Developmental Disabilities

The SII-R screens for sensory integration problems in people with developmental disabilities, a group the standard sensory assessments were not built for. It sidesteps performance testing entirely: a therapist works through a checklist of behaviours, either from their own observation or by interviewing someone who knows the person well.

Items sit in four sections — tactile, vestibular, proprioceptive, and general reactions — and each is marked typical, not typical, or don't know. Only presence or absence is recorded; there is no score. Interpretation rests on the clinician spotting patterns across sections. Self-stimulating and self-injurious behaviours are covered specifically, since those are often what prompts the referral.

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Learn More: Two things about what this is. The SII-R is not standardized — there are no norms, no cut scores, and no total. The authors intend it as a screen that identifies people who may benefit from a sensory integration approach, and specifically as a way of screening out people whose behavioural difficulties have causes other than sensory integration dysfunction. That is a narrow but genuinely useful job.