Mapping sensory sensitivity in autism.
Bat-Sheva Hadad, Inbar Leon, Marissa Hartston and 2 others
Across 32 perceptual tasks, autistic adults showed reduced sensitivity specifically for social stimuli (faces, speech) while non-social tasks showed preserved or enhanced performance.
Individual variation was large: many fell above or below the typical range in both directions.
Key findings
1Across 32 perceptual conditions, the poorest-performing tasks were predominantly social (face recognition, speech), where approximately 67% of autistic participants performed below the comparison group's confidence interval. Non-social tasks (visual search, size discrimination) showed approximately 64% at or above the comparison range.
2Inter-individual variability was substantial across all three performance segments. The average percentage of autistic participants within the comparison group's confidence interval was 18.60% for the poorest segment, 34.89% for the middle, and 30.15% for the best.
3A Bayesian hierarchical model confirmed that the overall mean difference between groups was close to zero, while social tasks specifically showed elevated thresholds of approximately 1 unit standard deviation above the comparison group.
Still to come
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
Sample sizes were convenience samples from prior experiments, not determined by power analysis, and not all participants completed all 32 conditions. Only 25 of 107 autistic participants were female, so sex differences in sensory sensitivity could not be examined. The study measured sensitivity thresholds only. Perceptual biases, subjective perception, and sensory reactivity were not assessed, so the full picture of sensory experience in autism is not captured. Data were compiled over 6 years from multiple experiments, so testing conditions and participant subsets varied across tasks.
The easy way to misread this
Do not read this as evidence of a general sensory deficit in autism. The reduced sensitivity was specific to social stimuli (faces, speech). Non-social perceptual tasks showed preserved or even enhanced performance, and the overall mean difference between groups was close to zero. A client who is hypersensitive to textures or sounds is not the same profile as one who struggles with speech discrimination.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →