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The Effect of Semantic Support on Word Learning

ConditionLanguage Development Disorders
Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age2-4
SponsorUniversity of Arizona

About this trial

The goal of this clinical trial is to compare word learning outcomes in late talking toddlers who are taught different types of words. The main question it aims to answer is if teaching words that come from categories that children already know (e.g., animals) will aid overall word learning. Children will take part in the Vocabulary Acquisition and Usage for Late Talkers (VAULT) word learning treatment and be taught words from more familiar or less familiar categories to see which group learns more words overall.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Native English Speaking

Pass pure tone hearing screening or medical report of normal hearing

2-3 Years of age

MCDI expressive scale <10th percentile

Disqualifiers

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

Trial design

Design model

Parallel

Treatments tested in this trial

  • VAULT Phase 5

    Behavioral

    This is an input-based vocabulary learning treatment based on principles of statistical learning.

Treatment groups

32 Participants
are divided into 2 treatment groups
Group A: Familiar WordsExperimental treatment 1 intervention
Group B: Less-Familiar WordsActive comparator 1 intervention

Trial outcomes

Primary outcomes

1

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).

Time frame
Change from baseline through treatment, which will average an 8-week time frame.
2

Number/Rate of Words Learned

The investigators will measure the number of words learned and 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 treatment.

Time frame
Change from Initial Evaluation through Follow-up, which will average a 6-month time frame.

Secondary outcomes

1

Post Treatment Retention

The investigators will use probe data and parental report to determine how many words the child retained from treatment.

Time frame
Change from end of treatment to follow up, which will average 4-6 weeks.

Other outcomes

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

University of Arizona

Lead sponsor

National Institute on Deafness and Other Communication Disorders (NIDCD)

Collaborator

Source ClinicalTrials.gov
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