Family ASL: Longitudinal Study of Deaf Children and Hearing Parents Who Receive Services to Support the Learning of ASL

NCT ID: NCT04988451

Last Updated: 2025-07-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-07-20

Study Completion Date

2025-11-30

Brief Summary

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This study examines the development of American Sign Language by deaf and hard of hearing (DHH) children and their parents.

Detailed Description

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After being informed about the study and potential risks, adult participants who give written informed consent and children whose parents who give written permission will be enrolled in the study. They will participate in preliminary language tasks to assess baseline performance on American Sign Language (ASL) measures. Subsequently they will have weekly sessions with an ASL Specialist to support their development of ASL, following a 6-week on/6-week off ABABABAB sequence.

Conditions

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Deafness Hearing Loss

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SINGLE_GROUP

Single Case Design - interrupted time series. Participants will receive intervention in 6-week on/off blocks. Measurements are taken in both on and off weeks.

The Bayesian procedure developed by Swaminathan et al. (2014) involves fitting piece-wise linear or curvilinear trends across the phases, modeling dependencies in the observations with a suitably chosen autoregressive error scheme, and using the Markov Chain Monte Carlo (MCMC) method to obtain the posterior distributions of the model parameters and effect size measures
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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ASL Services - Adult ASL Development

Presence (or absence, across 6-week periods) of ASL services designed to support improvement in ASL fluency

Group Type EXPERIMENTAL

ASL Services

Intervention Type BEHAVIORAL

ASL specialist meets with participants and provides ASL instruction

ASL Services - Child Language Development

Presence (or absence, across 6-week periods) of ASL services designed to support improvement in ASL fluency

Group Type EXPERIMENTAL

ASL Services

Intervention Type BEHAVIORAL

ASL specialist meets with participants and provides ASL instruction

Interventions

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ASL Services

ASL specialist meets with participants and provides ASL instruction

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

Children:

* Children ages 2;00 - 2;11 at the start of the longitudinal project
* Child is Deaf/ Hard-of-Hearing
* Participating in a program utilizing a bimodal bilingual philosophy

Adults:

\- One adult caregiver for each child

Exclusion Criteria

* Children with previously-diagnosed conditions other than deafness known to affect language and cognitive development
* Families without access to internet (at home or other locations)
Minimum Eligible Age

2 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Institute on Deafness and Other Communication Disorders (NIDCD)

NIH

Sponsor Role collaborator

University of Connecticut

OTHER

Sponsor Role lead

Responsible Party

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Diane Lillo-Martin

BOT Distinguished Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Diane C Lillo-Martin, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

University of Connecticut

Locations

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University of Connecticut - Department of Linguistics

Storrs, Connecticut, United States

Site Status

Countries

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United States

Other Identifiers

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R01DC016901

Identifier Type: NIH

Identifier Source: secondary_id

View Link

H20-0037

Identifier Type: -

Identifier Source: org_study_id

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