The FMR1 Premutation Phenotype and Mother-Youth Synchrony in Fragile X Syndrome.
Carly Moser, Laura Mattie, Leonard Abbeduto and 1 others
PMID 34700350WHAT IT FOUND
Mothers of sons with fragile X syndrome who had more severe pragmatic language difficulties showed lower-quality coordinated play interactions.
Maternal anxiety, depression, and verbal inhibition were not linked to synchrony.
Key findings
01Maternal pragmatic language difficulties were associated with mother-youth synchrony after accounting for youth nonverbal IQ, autism severity, and problem behavior.
02Maternal anxiety symptoms did not account for significant variance in mother-youth synchrony once youth characteristics were included.
03Maternal depression symptoms and maternal executive function did not significantly predict mother-youth synchrony in separate models.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The sample was small, with 29 dyads. It was a convenience sample drawn from a larger study designed for other questions, and data were taken from different years of that study. Interactions were observed for about 10 minutes each in a laboratory setting, so they may not reflect everyday home interactions. The study did not test an intervention, so it cannot show that changing maternal communication improves synchrony. All youth lived at home with their mother and used at least two- to three-word phrases, so findings may not apply to less verbal or out-of-home situations. Only sons with fragile X syndrome were studied, so findings may not apply to daughters. The study lacked information on FXPOI.
Declared interests
No conflict-of-interest declaration is included in the supplied article text. The provided publication types list NIH extramural research support.
The easy way to misread this
Do not conclude that treating maternal pragmatic language will improve mother-youth synchrony or child outcomes. The study does not test an intervention, and it is based on a small convenience sample, so it shows an association, not a treatment effect.