Strategic verbal rehearsal in adolescents with mild intellectual disabilities: A multi-centre European study.
Teens with mild ID rehearse words at their mental-age level, so set memory goals by mental age, not calendar age.
01Research in Context
What this study did
Poloczek et al. (2016) watched how teens with mild intellectual disability repeat lists of short and long words. They compared the teens to younger kids who had the same mental age.
The study ran in six European centers. No one got training; the team just looked for signs of silent verbal rehearsal.
What they found
Both groups showed the same word-length effect. Longer words were harder to recall for everyone.
Inspection times and rehearsal signs matched mental age, not birth age. Kids with ID used verbal tricks as often as their mental-age peers.
How this fits with other research
Gandhi et al. (2022) later showed the same teens learn repeating lists just as well as mental-age peers. Together, the papers say verbal memory tools develop with mental age in mild ID.
Danielsson et al. (2016) looked different at first glance. They found kids with Williams or Down syndrome often skip phonological tricks. The clash fades when you see Sebastian studied broad mild ID while Henrik studied specific syndromes.
Geckeler et al. (2000) gave adults with ID quiet gaps during a motor task. The adults used the pause to rehearse, hinting that strategic thinking is not missing in ID—just tied to mental age.
Why it matters
Stop expecting teens with mild ID to act like their birth age. Plan tasks for their mental age instead. Use verbal rehearsal cues such as whisper prompts or silent counting. If you work with syndrome-specific groups, test for phonological skills first—don’t assume they are there.
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02At a glance
03Original abstract
BACKGROUND: There is a long-held view that verbal short-term memory problems of individuals with intellectual disabilities (ID) might be due to a deficit in verbal rehearsal. However, the evidence is inconclusive and word length effects as indicator of rehearsal have been criticised. AIM & METHOD: The aim of this multi-site European study was to investigate verbal rehearsal in adolescents with mild ID (n=90) and a comparison group of typically developing children matched individually for mental age (MA, n=90). The investigation involved: (1) a word length experiment with non-verbal recall using pointing and (2) 'self-paced' inspection times to infer whether verbal strategies were utilised when memorising a set of pictorial items. RESULTS: The word length effect on recall did not interact with group, suggesting that adolescents with ID and MA comparisons used similar verbal strategies, possibly phonological recoding of picture names. The inspection time data suggested that high span individuals in both groups used verbal labelling or single item rehearsal on more demanding lists, as long named items had longer inspection times. CONCLUSIONS: The findings suggest that verbal strategy use is not specifically impaired in adolescents with mild ID and is mental age appropriate, supporting a developmental perspective.
Research in developmental disabilities, 2016 · doi:10.1016/j.ridd.2016.08.014