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RecruitingNCT07226921Updated Nov 12, 2025

Language Control Across Modalities

An interventional study of Predictability and language context in Healthy, sponsored by University of California, San Diego. Recruiting at 1 site in United States. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-11-12.

Sponsored by University of California, San Diego · Not applicable, Interventional, and Basic science

From the registry’s dates

  • Registered 3 months after the study started (first participant enrolled Aug 2025, registered Nov 2025).
  • Started Aug 2025; still recruiting 1 year 2 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
360
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study 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. 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.

02

Conditions studied

  • Healthy

Keywords

  • language control
  • bilingual adults
  • reaction time
03

In context

Lead sponsor

University of California, San Diego is the lead sponsor of 958 studies on the registry; 191 are open to participants now.

Of its 110 completed or terminated interventional studies of FDA-regulated products, 70 (64%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Proficient in both Mandarin and English, or proficiency in both ASL and English

Exclusion criteria

Exclusion Criteria:

  • Know a third language better than Mandarin/English or better than ASL/English
  • With language disorder or other neurological disorders
05

Study design

Phase
Not applicable
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Factorial assignment
Masking
Single (Participant)
Enrollment
360 participants (estimated)

Study arms

  • Experimental
    Predictable one-language production & both-language comprehension

    Behavioral: Predictability · Behavioral: language context

  • Experimental
    Predictable both-language production & both-language comprehension

    Behavioral: Predictability · Behavioral: language context

  • Experimental
    Unpredictable one-language production & both-language comprehension

    Behavioral: Predictability · Behavioral: language context

  • No intervention
    Single language comprehension and production

Interventions

  • BehavioralPredictability

    Whether the task of the next trial (comprehension or production) is predictable

  • Behaviorallanguage context

    whether both languages or only one language is involved in the current block

06

What researchers measure

Primary outcomes

  1. Switch costs in different contexts

    Time frame: An average of one year for each condition

07

Study locations

1 of 1 sites recruiting
  • UCSD
    San Diego, California 92037, United States
    Recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 12, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07226921
Lead sponsor
University of California, San Diego
Collaborators
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Responsible party
Chuchu Li (Assistant Professor, University of California, San Diego) — Principal investigator
First posted
Nov 12, 2025
Start date
Aug 6, 2025
Primary completion
May 31, 2030 (estimated)
Completion
Jul 31, 2030 (estimated)
Last update
Nov 12, 2025

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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No contact was published for this record. The registry link below has the sponsor’s details.

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