Discourse Marker Use in Mothers of Autistic Individuals and FMR1 Premutation Carriers.
Mothers of autistic children pepper conversations with extra backchannels, and this little habit tracks closely with their overall pragmatic language skill.
01Research in Context
What this study did
Maltman et al. (2026) listened to how moms talk during short conversations.
They compared three groups: mothers of autistic children, mothers who carry the FMR1 premutation, and mothers with no known genetic link.
The team counted tiny words called discourse markers—like “okay,” “mm-hm,” and “so”—and checked if the moms’ CGG-repeat length mattered.
What they found
Mothers of autistic kids used backchannels (little “mm-hm” cues) more often than the other two groups.
More backchannels lined up with better overall pragmatic language scores.
CGG-repeat length showed only a small link to marker use, nothing strong.
How this fits with other research
Ashtari et al. (2021) saw that moms of autistic preschoolers respond just as fast as moms of typical kids when children speak first. Nell adds that these moms also sprinkle more backchannels while they listen.
Li et al. (2024) found child-focused maternal styles boost autistic children’s talking. Nell’s higher backchannel rate fits that idea—moms who feed in more “I’m listening” cues keep the child in charge of the topic.
Titlestad et al. (2019) reported that mid-range CGG repeats can blunt the stress-buffering effect of social support in FMR1 carriers. Nell shows the same genetic range has only a weak effect on actual talking style, suggesting the gene shapes stress biology more than everyday conversation markers.
Why it matters
If you assess pragmatics or coach parents, count backchannels during a five-minute chat. A mom who says “mm-hm” or “yeah” often is probably showing strong pragmatic skill herself, and her child gets more chances to lead the talk. No need to trim these tiny cues—they signal active, child-centered listening.
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During your next parent meeting, tally the mom’s backchannels for three minutes—if frequent, praise her listening style and encourage more child-led talk.
02At a glance
03Original abstract
PURPOSE: The subtle pragmatic language differences that characterize the broad autism phenotype have also been observed among female FMR1 premutation carriers, suggesting a potential role of the FMR1 gene in autism-related pragmatic language differences. This study evaluated the use of discourse markers (language units that support conversational discourse) in a direct comparison of these groups to examine how this key pragmatic skill may be used differently and potentially contribute to pragmatic language profiles in each group. METHOD: Participants included 83 mothers of autistic individuals, 61 female FMR1 premutation carriers, and 41 female controls. Discourse marker use was evaluated in the context of a semi-structured conversation. Patterns were compared across groups and evaluated in relationship to global pragmatics and variability in the FMR1 gene across the CGG range. RESULTS: Mothers of autistic individuals demonstrated clear differences in discourse marker patterns compared with FMR1 premutation carriers and controls. Relationships to pragmatics were observed in the use of backchannels only. Links to FMR1 were observed within the premutation CGG range. CONCLUSIONS: Findings suggest that differences in discourse marker use could be an important component of the broader pragmatic differences noted in first degree relatives of autistic individuals, although evidence of a direct relationship with FMR1 was limited.
Journal of autism and developmental disorders, 2026 · doi:10.1080/02699206.2019.1578415