Recruiting

Educational App

Sponsor:

Northern Arizona University

Code:

NCT07519629

Conditions

Developmental Language Disorder

Eligibility Criteria

Sex: All

Age: 4 - 6

Healthy Volunteers: Not accepted

Interventions

Robust vocabulary intervention

Study Details

Brief summary:

The purpose of this study is to determine whether Spanish-speaking caregivers can learn to teach science vocabulary to their children with the use and educational app and a short training video with target words. The children will take language, speech, and hearing tests, as well as science and vocabulary pretests with a speech-language pathologist. You will be asked to answer some questions about your language use in the house and other places. If you and your child qualify for the study, the researcher will randomly place you a group to 1) use the app, or 2) use books. Since you are chosen at random, there is no way of knowing which group you and your child will be in before you start. Participants will take part in an 11-week study (3 weeks of testing at the beginning, middle, and end of study, and 8 weeks of intervention). The testing will be conducted in a place that is comfortable for your child (home, school, university clinic). The intervention can be done at home (researchers will not be present for this part of the study, but we will be available to support you or answer questions). We want you to play (group 1) or read (group 2) with your child two times a week (\~30 minutes) and send the audio recording of your interaction to our researchers.

Conditions

Developmental Language Disorder

Study ID

NCT07519629

Start date

Feb 23, 2026

Status verified date

Apr, 2026

Completion date

Dec 31, 2027

Anticipated

Primary completion date

Dec 31, 2026

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 4 - 6

Healthy Volunteers: Not accepted

Inclusion Criteria:

Children:

  • age (4-6) and not have completed kindergarten prior to pretesting
  • pass a hearing screening to rule out hearing loss as a cause for language impairment
  • speak Spanish at least 50% of their day reported in BIOS
  • have a confirmed diagnosis of DLD via the BESA
  • not have a diagnosis of intellectual disability via Matrices subtest or social communication disorder via Social Communication Questionnaire
  • be able to speak with at least 3-word utterances

Caregivers:

  • have access to a smart phone
  • spend time with the child participant daily
  • speak fluent Spanish

Exclusion Criteria:

\-

Study Design

Enrollment

64 participants

Anticipated

Allocation

Randomized

Intervention Model

Parallel Assignment

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

experimental: Caregiver delivered vocabulary intervention

Caregivers will be trained to teach target vocabulary to their child during science activities

no intervention: Caregiver-child book sharing

Caregivers will read books on target science concepts twice a week with their child

Interventions

Robust vocabulary intervention

Caregivers will be trained to teach target vocabulary to their children

Primary outcome measure

  • Caregiver fidelity [ Time Frame: 11 weeks ]
  • Improved Tier-2 vocabulary for children [ Time Frame: 11 weeks ]
  • Modify intervention and training [ Time Frame: 11 weeks ]

Central Contacts and Locations

Central contacts

Lindsey A Hiebert, Ph.D.

928-523-2109Lindsey.Hiebert@nau.edu

Locations

NAU Speech-Language-Hearing Clinic

Recruiting

Flagstaff, Arizona, United States, 86011

Contacts

Lindsey A Hiebert, Ph.D.

928-523-2109Lindsey.Hiebert@nau.edu

More Information

Sponsor

Northern Arizona University

Last update posted

Apr 9, 2026

Last verified

Apr, 2026

Keywords

  • caregiver intervention
  • bilingual
  • implementation science
  • vocabulary

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-10. This information was provided to ClinicalTrials.gov by Northern Arizona University on 2026-04-09.