Autism
How do autistic children interpret 'some' when 'all' is true?
Open access · cc by · source: Europe PMC
With only 'agree' or 'disagree' available, autistic children rejected misleading 'some' statements at least as often as other children, but with a middle option they chose the extremes while typically developing peers chose 'agree a bit'.
Study at a glance
- Design
- Case-control — Three groups (ASD, IQ-matched, age-matched typically developing) judged optimal, logically false and underinformative statements, first with two response options (Experiment 1) then with three (Experiment 2), in fixed order.
- N
- N=66 · 66 Flemish-speaking 10-year-olds: 22 with ASD plus an IQ-matched and an age-matched group; the same children did both experiments. The extracted text lacks the Experiment 1 participant and materials section, so group matching details are not available.
- Population
- Flemish-speaking children around 10 years old with and without autism spectrum disorder
- Outcome
- Agreement judgements to underinformative (e.g., 'some' when 'all' is true), optimal and false statements
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Key findings
In the two-option task, all groups handled true and false statements equally, and the autistic group rejected underinformative statements more than the others in the regression analysis, though not in the non-parametric analysis. In the three-option task, typically developing children preferred 'agree a bit' for underinformative statements, showing tolerance, whereas autistic children more often totally agreed or totally disagreed. The IQ-matched group showed the same split pattern as the autistic group, suggesting general intellectual or verbal ability, not autism alone, is involved.
Methodology
The researchers tested 66 ten-year-old Flemish-speaking children: 22 with autism, a group matched on IQ, and a group matched on age. Children judged a character's statements about pictures, some true and fully informative, some false, and some true but underinformative, such as saying 'some' when 'all' applied. In Experiment 1 they could only agree or disagree; in Experiment 2 they could also 'agree a bit'.
Limitations
Groups were small and the key contrasts were not always consistent across the two statistical approaches used. Because the IQ-matched group behaved like the autistic group, the study cannot attribute the pattern specifically to autism, and the authors did not separate verbal from non-verbal IQ. All children did the binary task before the ternary one, so rule-switching could be a confound, and the extracted paper text omits the Experiment 1 participant and materials section, so matching details cannot be checked here.
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