HealthyNCT07226921
Language Control Across Modalities
A study testing Predictability and language context in people with Healthy, run by University of California, San Diego at 1 site in United States.
Trial summary
This study aims to investigate how unimodal bilinguals who speak two languages and bimodal bilinguals who speak one language and sign another control languages across comprehension and production. Read more about this study
- Who is it for?
- Ages 18 to 65 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy
- What is being tested?
- Predictability and language context
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 360 participants
- Where
- 1 siteUnited States
- Study dates
- 6 Aug 2025to 31 Jul 2030
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Proficient in both Mandarin and English, or proficiency in both ASL and English
Who cannot join
- Know a third language better than Mandarin/English or better than ASL/English
- With language disorder or other neurological disorders
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
UCSD
San Diego, California, 92037
Chuchu Li, 619-543-5221, chl441@health.ucsd.edu
About this study
Official title: Language Control Across Comprehension and Production in Unimodal and Bimodal Bilinguals
This study aims to investigate how unimodal bilinguals who speak two languages and bimodal bilinguals who speak one language and sign another control languages across comprehension and production. Participants will complete different language tasks (e.g., classify a word, name a picture) in different languages, and their behavioral performance will be assessed, including accuracy and reaction time.
- Conditions
- Healthy
- Being tested
- Predictability, language context
- Keywords
- language control, bilingual adults, reaction time
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PredictabilityBehavioural
Whether the task of the next trial (comprehension or production) is predictable
language contextBehavioural
whether both languages or only one language is involved in the current block
| Study group | Role | What they receive |
|---|---|---|
| Predictable one-language production & both-language comprehension | Experimental | Not described Receives: Behavioral: Predictability; Behavioral: language context |
| Predictable both-language production & both-language comprehension | Experimental | Not described Receives: Behavioral: Predictability; Behavioral: language context |
| Unpredictable one-language production & both-language comprehension | Experimental | Not described Receives: Behavioral: Predictability; Behavioral: language context |
| Single language comprehension and production | No intervention | Not described |
What is being measured
The primary outcome is the main question the study is designed to answer.
Switch costs in different contexts
Measured: An average of one year for each condition
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Nov 2025
- Study start6 Aug 2025
- Primary completion31 May 2030 (estimated)
- Study completion31 Jul 2030 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for HealthyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Factorial
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 360 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of California, San Diego
- Sponsor type
- University, hospital or other
- Collaborators
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
- Responsible party
- Principal investigator, Chuchu Li, University of California, San Diego
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07226921
- Sponsor's protocol ID
- 806634
- Other IDs
- R01HD116841
- Status last verified
- Sep 2025
- First submitted
- 6 Nov 2025
- Last updated
- 12 Nov 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 12 Nov 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Language Control Across Comprehension and Production in Unimodal and Bimodal Bilinguals
- ClinicalTrials.gov ID
- NCT07226921
- Acronym / sponsor ID
- 806634
- Conditions
- Healthy
- Keywords
- language control, bilingual adults, reaction time
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 360 participants (estimated)
- Lead sponsor
- University of California, San DiegoUniversity, hospital or other
- Collaborators
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
- Study start
- 6 Aug 2025 (actual)
- Primary completion
- 31 May 2030 (estimated)
- Study completion
- 31 Jul 2030 (estimated)
- First posted
- 12 Nov 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study aims to investigate how unimodal bilinguals who speak two languages and bimodal bilinguals who speak one language and sign another control languages across comprehension and production. Participants will complete different language tasks (e.g., classify a word, name a picture) in different languages, and their behavioral performance will be assessed, including accuracy and reaction time.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Factorial
- Masking
- Single blind (participant)
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| Predictable one-language production & both-language comprehension | Experimental | Behavioral: Predictability, Behavioral: language context |
| Predictable both-language production & both-language comprehension | Experimental | Behavioral: Predictability, Behavioral: language context |
| Unpredictable one-language production & both-language comprehension | Experimental | Behavioral: Predictability, Behavioral: language context |
| Single language comprehension and production | No intervention | – |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Proficient in both Mandarin and English, or proficiency in both ASL and English
Key exclusion criteria (2 listed)
- Know a third language better than Mandarin/English or better than ASL/English
- With language disorder or other neurological disorders
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| PredictabilityWhether the task of the next trial (comprehension or production) is predictable | Behavioural | Predictable both-language production & both-language comprehension, Predictable one-language production & both-language comprehension, Unpredictable one-language production & both-language comprehension |
| language contextwhether both languages or only one language is involved in the current block | Behavioural | Predictable both-language production & both-language comprehension, Predictable one-language production & both-language comprehension, Unpredictable one-language production & both-language comprehension |
Primary outcome
Switch costs in different contexts
Time frame: An average of one year for each condition
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Nov 2025.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Predictability and language context in people with Healthy, run by University of California, San Diego at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 12 Nov 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Each site lists its own contact: choose the nearest one under Trial locations. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Switch costs in different contexts (time frame: An average of one year for each condition). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Nov 2025; AzTrials last refreshed its copy on 28 Oct 2026.