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Deaf Kids' word learning secrets revealed in Eye-Tracking study

NCT ID NCT05993832

Knowledge-focused Sponsor: Boston University Charles River Campus Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Sep 16, 2026 · Updated 2 times

Summary

This study looked at how deaf children ages 18 to 60 months learn new words in American Sign Language (ASL). Researchers used eye-tracking and behavior tests to see if kids assume each object has only one sign (mutual exclusivity) or if bilingual deaf children expect two words—one in sign and one in speech. The goal was to understand learning strategies, not to test a treatment.

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

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

48 people

The number who actually took part.

Started

Aug 2023

Finished

Jun 2025

Lead sponsor

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

18 to 60 months

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Deaf children ages 18-60 months * born severely to profoundly deaf * have either deaf or hearing parents * communicate using American Sign Language * have normal to corrected normal vision Exclusion Criteria: * Deaf children who have not been exposed to American Sign Language

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Conditions

The condition(s) this trial relates to.

Deafness hearing loss disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Deafness

Contacts and locations

Locations

  • Boston University

    Boston, Massachusetts, 02215, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.