Exploring Pragmatic Abilities in Sisters of Autistic Individuals: A Methodological Solution to Female Autism Research.
Sisters of autistic girls show quiet pragmatic differences best caught by caregiver report, not story tests.
01Research in Context
What this study did
Belenger et al. (2026) asked if sisters of autistic girls have subtle language quirks.
They compared caregiver ratings and story-telling tasks in a small group of school-age sisters.
The team wanted a female-friendly way to spot autism risk without relying on male norms.
What they found
Caregivers noticed mild pragmatic slips, such as odd topic shifts or too-literal replies.
Yet when the girls told a story, the structure, pronouns, and time words looked typical.
Each girl varied; some showed both signs, others showed none.
How this fits with other research
Toth et al. (2007) saw clear language lags in toddler siblings. The new study shows these delays mostly fade by late elementary years.
Shaked et al. (2006) found preschool siblings passed false-belief tasks. The mild caregiver-noted quirks in Marie’s older sample may bloom later, or need subtler probes.
Colle et al. (2008) documented stark narrative gaps in autistic adults. Sisters did not mirror these deficits, hinting that any risk markers are far milder.
Why it matters
If you assess a girl for autism, ask the family about everyday chat, not just story tasks. A sister’s small pragmatic hiccup may flag a wider female phenotype worth tracking. Add a short parent questionnaire to your intake packet today.
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02At a glance
03Original abstract
Autism is more frequently diagnosed in males than females. One possible explanation for this discrepancy is that autistic females may be overlooked because they show different, subtler signs of autism. For example, sex differences have been reported in pragmatic abilities. However, studying these sex differences is challenging, because diagnosed autistic females may not represent all autistic females-many remaining undiagnosed. To address this issue, our study included adolescent females at increased likelihood for autism: sisters of autistic individuals. Adolescence is a key period when autism-related difficulties often become more visible. We compared the pragmatic abilities of 76 female participants aged between 9 and 16 years old across three groups: autistic, nonautistic, and sisters of diagnosed autistic individuals. Participants completed a semistructured, spoken narrative task, which was analyzed for coherence and fluency. Their caregivers completed several questionnaires to assess both pragmatic abilities and global difficulties. At the group level, caregiver reports indicated an in-between position for sisters: they experienced more pragmatic-related difficulties than nonautistic participants but fewer than autistic participants. Narratives revealed no differences between sisters and nonautistic participants, with one exception: they gave fewer causal explanations of characters' mental states. Individual profiles of sisters revealed a heterogeneous group, varying from no difficulties at all to pragmatic profiles closely resembling those of autistic females.
Autism research : official journal of the International Society for Autism Research, 2026 · doi:10.1002/aur.70147