Assessment & Research

Psycholinguistic profile of young adults with Down syndrome.

López-Riobóo et al. (2019) · Research in developmental disabilities 2019
★ The Verdict

Young adults with Down syndrome show weaker auditory than visual language skills, yet both channels need support.

✓ Read this if BCBAs serving teens or adults with Down syndrome in day programs or residential sites.
✗ Skip if Practitioners who work only with typically developing clients or preschoolers.

01Research in Context

01

What this study did

López-Riobóo et al. (2019) tested 30 young adults with Down syndrome. They matched each one to a peer with intellectual disability but no DS. The team gave both groups the same battery of language tests. Half the tests used pictures and printed words. The other half used spoken words and sounds. Everyone took the tests in a quiet room at a local center.

02

What they found

The DS group scored lower on every task. The gap was biggest on auditory jobs like repeating made-up words. Visual tasks showed a smaller yet clear deficit. In short, ears gave them more trouble than eyes, but both channels were weak.

03

How this fits with other research

Eisenhower et al. (2006) showed one nine-year-old with DS plus autism started talking more once teachers waited for a spoken request. Their positive result might look opposite to Elena’s negative profile, but the difference is age and goal. Elena mapped weak skills; A showed that ABA can still grow those weak skills if you target them directly.

Ortiz et al. (2014) found auditory and visual timing problems in preschoolers at risk for dyslexia. The pattern matches Elena’s DS data, hinting that timing glitches could sit beneath both disorders.

McGonigle et al. (2014) warn that hearing and vision loss pile up in adults with DS. Elena’s data now say those sensory hits land on top of already-shaky language processing, so routine hearing and vision checks are vital.

04

Why it matters

Before you write goals, test both listening and looking tasks. If the learner fails to follow a spoken direction, it may be a hearing problem, a language problem, or both. Pair auditory targets with clear visual cues, and keep glasses and hearing aids in working order. This double-check saves you months of guessing why progress is slow.

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Add a quick hearing and vision status check to your intake form, then present new instructions with both a spoken model and a picture or text cue.

02At a glance

Intervention
not applicable
Design
quasi experimental
Sample size
100
Population
down syndrome, intellectual disability
Finding
negative

03Original abstract

BACKGROUND: The phenotype of Down syndrome (DS) is usually characterized by relative strengths in visual skills and severe deficits in auditory processing; this has consequences for language and communication. To date, it is not known whether this pattern characterizes the psycholinguistic profile of young adults with DS. AIMS: This study aimed to assess whether, relative to their cognitive level, young adults with DS present a specific and homogeneous phenotype for both auditory and visual psycholinguistic skills. METHODS AND PROCEDURES: Fifty young adults with DS and 50 peers with other intellectual disability (ID) were equated in chronological age and nonverbal cognition and were compared regarding their performance in auditory and visual psycholinguistic functions. OUTCOMES AND RESULTS: Participants with DS showed more phenotypic-specific deficits in auditory psycholinguistic skills than in those involved in visual processing. However, phenotypic-specific impairments in visual psycholinguistic skills were also observed, while no significant between-group differences were found for some auditory psycholinguistic skills. CONCLUSIONS AND IMPLICATIONS: The psycholinguistic pattern of young adults with DS is not homogeneous with respect to auditory and visual processing. The profile of specific deficits suggests that the educative support for young adults with DS may need to be specific.

Research in developmental disabilities, 2019 · doi:10.1016/j.ridd.2019.103460