Does phonetic repertoire in minimally verbal autistic preschoolers predict the severity of later expressive language impairment?
Count the speech sounds first; it tells you who will need AAC and who is ready for talking therapy.
01Research in Context
What this study did
Van Herwegen et al. (2020) watched 27 minimally verbal autistic preschoolers for one year.
They counted every different speech sound the kids could make at the start.
Then they tracked who gained real spoken words twelve months later.
What they found
Kids with more early sounds were the only ones who later talked in sentences.
IQ, play skills, and social scores did not predict talking gains.
Only the size of the first sound toolbox mattered.
How this fits with other research
Shafer (1993) said picking an AAC system should look at motor skills. Jo’s data agree: if the mouth toolbox is tiny, shift to signs or tablets early.
Wilkins et al. (2009) used chaining to grow echoics into stories. Their kids first needed clear mouth sounds; Jo shows which kids have that starter set.
Fryling (2017) wonders if echoic, mand, and intraverbal are separate. Jo’s result blurs the lines—early echoic sounds fuel later intraverbal growth.
Why it matters
Stop guessing who will talk. Spend five minutes listing the child’s consonants and vowels. If the list is short, add AAC now and keep building mouth play. If the list is long, push echoic drills and chaining fast—you have green light for speech.
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02At a glance
03Original abstract
What is already known about the topic? Language skills vary enormously in autism: while some autistic individuals can engage in sophisticated conversations, many remain minimally verbal, meaning they use few or no words regularly for communication. We do not know what causes this variation, but we do know that certain child and family characteristics can be measured when a child is young, and this information can improve our prediction of how expressive language might develop over time. What this article adds? We examined four characteristics, which have already been found to predict language development in young minimally verbal autistic children. We followed the expressive language progress of 27 minimally verbal children, aged three to five, for a year. One-third no longer met the minimally verbal criteria at the end of the study. In this sample, only one factor predicted language progress, which was the child's initial speech skills (the number of different speech sounds that the child made during an interaction). This finding adds to the evidence that speech skills contribute to language development in autism. In some cases, persistent and severe expressive language difficulties may reflect an additional deficit in speech production, rather than a consequence of core autism features. Implications for practice, research or policy Our findings suggest that there are factors other than social skills that influence language development in autism. Careful assessment of speech production should be considered when language does not develop as expected. Future research should evaluate speech skills interventions for minimally verbal autistic individuals, as well as promoting the use of alternative communication systems.
Autism : the international journal of research and practice, 2020 · doi:10.1177/1362361319898560