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| ID | Type | Description | Link |
|---|---|---|---|
| 2R01DC015642-06 | U.S. NIH Grant/Contract | View source |
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| Name | Class |
|---|---|
| National Institute on Deafness and Other Communication Disorders (NIDCD) | NIH |
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The goal of this clinical trial is to compare two treatment conditions for late talking toddlers. In 8 weeks of word learning treatment, toddlers will be taught words that sound more like the words they already know or sound less like the words they already know. The investigators see which group learns more, to understand if choosing words that let children use the knowledge they already have helps with learning.
Late talking toddlers will be assigned to be in the More Familiar Sounds condition or the Less Familiar Sounds condition. Both groups will receive 8 weeks of Vocabulary Acquisition and Usage for Late Talkers (VAULT) word learning treatment (2x/week for 30 minutes per session) using their words. The investigators will compare learning within children (taught words v. control words that are not explicitly taught) to make sure the learning that is happening is due to the treatment and not just maturation. The investigators will compare across groups to see if the group treated with More Familiar Sounding words learns more than the group treated with Less Familiar Sounding words.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| More Familiar Sounds | Experimental | Children in this condition will learn new words whose sounds are more like the sounds in the words the child already understands. |
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| Less Familiar Sounds | Active Comparator | Children in this condition will learn new words whose sounds are less like the sounds in the words the child already understands. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| VAULT Phase 4 | Behavioral | Children will receive an input-based word learning treatment that is designed based on principles of statistical learning. |
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| Measure | Description | Time Frame |
|---|---|---|
| Treatment Effect Size | The investigators will count the number of spontaneous and probed productions of target and control words and calculate a treatment effect size (d). | Change from baseline through treatment, which will average an 8-week time frame. |
| Number/Rate of Words Learned | The investigators will measure the number of words learned and the rate of words learned as reported by the parent on the MCDI starting prior to treatment and measured during, immediately following, and 4-6 weeks after the treatment. | Change from Initial Evaluation through Follow-up, which will average a 6-month time frame. |
| Measure | Description | Time Frame |
|---|---|---|
| Post Treatment Retention | The investigators will use probe data and parental report to determine how many of the words the child retained from treatment. | Change from end of treatment to follow up, which will average 4-6 weeks. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Mary Alt, PhD | University of Arizona | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Arizona | Tucson | Arizona | 85721 | United States |
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| Release Date | Unrelease Date | Unrelease Date Unknown | Reset Date | MCP Release Number |
|---|---|---|---|---|
| Jun 16, 2026 |
| ID | Term |
|---|---|
| D007805 | Language Development Disorders |
| ID | Term |
|---|---|
| D007806 | Language Disorders |
| D003147 | Communication Disorders |
| D019954 | Neurobehavioral Manifestations |
| D009461 | Neurologic Manifestations |
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The investigators will use treatment effect sizes to compare children to themselves (treatment v. control) and across groups (More Familiar Sounds v. Less Familiar Sounds).
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The children in the study and their caregivers will not be told which treatment group their child is in.
| D009422 | Nervous System Diseases |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |