Autism & Developmental

Discrimination in autism within different sensory modalities.

O'Riordan et al. (2006) · Journal of autism and developmental disorders 2006
★ The Verdict

Autistic kids may hear pitch or tone differences others miss — consider this when interpreting ‘over-reactions’ to sounds.

✓ Read this if BCBAs writing sensory plans for autistic children who react strongly to sounds.
✗ Skip if Clinicians working only with adults or purely tactile defensiveness cases.

01Research in Context

01

What this study did

O'Riordan et al. (2006) compared kids with autism to typical kids on two senses.

They gave simple tests: hear two sounds and say same or different, feel two touches and say same or different.

The team wanted to know if autism changes how well children spot tiny differences in sounds or touches.

02

What they found

Autistic kids heard pitch or tone changes that typical kids missed.

On touch tests both groups scored the same.

So sharp ears, normal touch.

03

How this fits with other research

Porter et al. (2008) seems to disagree. They measured brain waves and found autistic kids had weaker automatic sound detection.

The clash is about attention. Michelle used games where kids listened hard. A et al. recorded background brain response while kids ignored sounds.

Vassos et al. (2016) extends the story: younger autistic kids are less bothered by mixed-up sound patterns, showing the ear-brain link is complex.

O Miguel et al. (2017) and Mello et al. (2025) look at touch feelings, not touch accuracy. They show touch avoidance can still shape social life even when discrimination scores are typical.

04

Why it matters

If a client covers his ears at the vacuum, check if he hears a high whine you cannot. Use this detail to write better sensory plans and pick quieter tools.

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Before calling a sound ‘too loud,’ test if the child notices tiny pitch changes you missed—lower volume or change frequency, not just decibels.

02At a glance

Intervention
not applicable
Design
quasi experimental
Population
autism spectrum disorder, neurotypical
Finding
mixed

03Original abstract

Recent studies have suggested that unusual visual processing in autism might stem from enhanced visual discrimination. Although there are also many anecdotal reports of auditory and tactile processing disturbances in autism these have received comparatively little attention. It is possible that the enhanced discrimination ability in vision in autism might extend to other modalities and further that they may underlie many reports of unusual touch and audition. The present study investigated the performance of children with and without autism on auditory and tactile discrimination tasks and revealed superior auditory but comparable tactile discrimination in autism relative to controls. These results extend previous findings of perceptual discrimination in autism and may be relevant for a neuro-developmental hypothesis of the disorder.

Journal of autism and developmental disorders, 2006 · doi:10.1007/s10803-006-0106-1