Service Delivery

A Spoken-Language Intervention for School-Aged Boys With Fragile X Syndrome.

McDuffie et al. (2016) · American journal on intellectual and developmental disabilities 2016
★ The Verdict

Zoom coaching while mom and child share a story quickly boosts language in fragile X.

✓ Read this if BCBAs running telehealth parent training for school-age clients with IDD.
✗ Skip if Clinicians who only see clients in person and have no telehealth option.

01Research in Context

01

What this study did

McDuffie et al. (2016) coached moms of school-age boys with fragile X syndrome through Zoom.

The team taught each mom to use language-building moves while she and her son looked at picture books together.

Sessions were short, done at home, and filmed so coaches could give quick feedback.

02

What they found

Moms used the new story moves more often after each Zoom visit.

The boys talked more during stories and used a wider range of words and longer sentences.

Gains showed up in other parts of the day, not just during the book time.

03

How this fits with other research

Hao et al. (2021) ran a similar telehealth program with kids who have autism. They got the same language gains, showing the idea works across diagnoses.

Ferguson et al. (2022) also used telehealth parent coaching, but taught mand, tact, and intraverbal skills during play. Both studies show parents can learn the moves online, no matter the activity.

Klusek et al. (2015) warned that boys with fragile X often struggle with phonics. Andrea’s team sidestepped that roadblock by targeting spoken language through stories instead of reading drills.

04

Why it matters

You can add five-minute parent-coaching clips to your telehealth day. Pick a favorite picture book, model one move like expanding the child’s line, and ask the parent to try it on camera. Check the next clip for mastery. No extra travel, no extra cost, and the child gets more words.

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→ Action — try this Monday

Film mom and child reading for two minutes, tag one expand prompt, ask her to replay and practice before bedtime.

02At a glance

Intervention
parent training
Design
single case other
Sample size
3
Population
intellectual disability
Finding
positive

03Original abstract

Using a single case design, a parent-mediated spoken-language intervention was delivered to three mothers and their school-aged sons with fragile X syndrome, the leading inherited cause of intellectual disability. The intervention was embedded in the context of shared storytelling using wordless picture books and targeted three empirically derived language-support strategies. All sessions were implemented through distance videoteleconferencing. Parent education sessions were followed by 12 weekly clinician coaching and feedback sessions. Data were collected weekly during independent homework and clinician observation sessions. Relative to baseline, mothers increased their use of targeted strategies, and dyads increased the frequency and duration of story-related talking. Generalized effects of the intervention on lexical diversity and grammatical complexity were observed. Implications for practice are discussed.

American journal on intellectual and developmental disabilities, 2016 · doi:10.1352/1944-7558-121.3.236