Suboptimal but intact integration of Bayesian components during perceptual decision-making in autism.
Laurina Fazioli, Bat-Sheva Hadad, Rachel N Denison and 1 others
PMID 39806435WHAT IT FOUND
High-functioning autistic adults integrated prior knowledge and sensory uncertainty into visual decisions similarly to non-autistic adults.
Both groups showed suboptimal adjustments, but the autism-specific deficit in Bayesian integration was not found, challenging the altered integration hypothesis.
Key findings
01Autistic and non-autistic groups adjusted their decision criteria in response to prior knowledge (base rates) to a similar extent, with no significant group difference.
02When controlling for sensitivity, both groups deviated from optimal Bayesian decision-making in a comparable manner, showing no group difference in suboptimality.
03In the sensory uncertainty experiment, both groups shifted decision boundaries similarly as sensory uncertainty increased, with no significant group difference.
STILL TO COME
How it was doneWhat they foundWhat it means for OTs
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What it does not show
The study used explicit prior knowledge; results may not generalize to implicit or learned priors. Participants were high-functioning adults, so findings may not apply to children or those with higher support needs. The task involved simple visual orientation categorization, which may not reflect complex social or real-world perceptual processing. There was a significant difference in sex ratios between the autistic and non-autistic groups. Sensitivity differences were found at specific contrast levels in Experiment 1, though they did not impact the main integration findings.
Declared interests
Funded by the Israeli Science Foundation. No other conflicts of interest reported.
The easy way to misread this
Do not conclude that autistic individuals have intact perceptual processing overall. The study found intact Bayesian integration mechanisms for simple visual tasks, but also noted reduced sensitivity at certain contrast levels in Experiment 1 and suboptimal behavior in both groups.