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Can familiar words boost toddler language learning?
NCT ID NCT05921214
First seen Jul 13, 2026 · Last updated Jul 14, 2026 · Updated 1 time
Summary
This study compares word learning in late-talking toddlers (ages 2–3) who receive a behavioral treatment called VAULT. One group is taught words from categories they already know (like animals), while the other group learns words from less familiar categories. The goal is to see which approach helps children learn more words overall.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- VAULT (Vocabulary Acquisition and Usage for Late Talkers) – a behavioral vocabulary learning treatment
- What this could lead to
- If successful, this could help refine language therapy for toddlers with language delays, making it more effective by focusing on familiar word categories.
- What could go wrong
- This is a small, early-stage study with only 32 children, so results may not apply to all late-talking toddlers. The treatment is behavioral and requires consistent parent participation.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 32 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2025
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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2 to 4 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Native English Speaking * Pass pure tone hearing screening or medical report of normal hearing * 2-3 Years of age * MCDI expressive scale \<10th percentile Exclusion Criteria: * Parental report of other diagnoses * Enrolled in concurrent treatment elsewhere * Nonverbal IQ \<75 as measured by the Bayley scales * Parents unable to consistently bring child to treatment sessions
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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University of Arizona
RECRUITINGTucson, Arizona, 85721, United States
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