Assessment & Research

Evaluating Verbal Fluency Outcome Measures in Children With Down Syndrome.

Smeyne et al. (2022) · American journal on intellectual and developmental disabilities 2022
★ The Verdict

Use semantic, not phonemic, verbal fluency tasks for kids with Down syndrome aged ten and up.

✓ Read this if BCBAs running language assessments in schools or clinics
✗ Skip if Clinicians who only test toddlers or use non-verbal skill checks

01Research in Context

01

What this study did

The team tried a kid-friendly verbal fluency test with the children with Down syndrome. Ages ranged from 6 to 14.

Kids named words in two ways: by sound (phonemic) and by meaning (semantic). They did each type twice, once before and once after a short break.

02

What they found

The phonemic rounds failed. Kids stalled, timers broke, and scores were too shaky to trust.

Semantic rounds ran smoother, but only for kids aged ten and up. Younger ones still struggled.

03

How this fits with other research

H-Fournier et al. (2004) saw the same language-production weakness. Their sentence-memory task also flopped for younger kids with Down syndrome.

Myers et al. (2018) tracked infants with Down syndrome and found that joint-attention skills, not speech skills, predicted later language. The new fluency data match this: sound-based tasks are harder than meaning-based ones.

Together, the three papers line up. Tasks that lean on fast sound retrieval fail early. Tasks that use meaning work better once the child hits ten.

04

Why it matters

If you need a quick language check for a client with Down syndrome, skip the classic "name words that start with F." Use a category round like "tell me all the animals you know." Start at age ten and keep sessions short. This small swap gives you data you can trust without tears or tantrums.

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→ Action — try this Monday

Replace the letter-based fluency probe with a one-minute category round (e.g., foods) for your next ten-year-old client

02At a glance

Intervention
not applicable
Design
pre post no control
Sample size
85
Population
down syndrome
Finding
inconclusive

03Original abstract

This study evaluates the psychometric properties of a verbal fluency task for potential use as an outcome measure in future clinical trials involving children with Down syndrome. Eighty-five participants attempted a modified version of the Neuropsychological Assessment of Children, Second Edition Word Generation Task at two time points. In the full sample, the measure fell below a priori reliability and feasibility criteria, though feasibility of the semantic trials were higher than feasibility of the phonemic trials. Performance on the measure correlated with chronological age and IQ scores, and no sex-related effects were found. Additional analyses suggested that the semantic verbal fluency trials might be appropriate for children with Down syndrome 10 years of age and older.

American journal on intellectual and developmental disabilities, 2022 · doi:10.1080/09297049.2021.1917531