Language Control Across Modalities

Part of paid clinical trials in San Diego, California.

Sponsor
University of California, San Diego
Study ID
NCT07226921
Status
Recruiting
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Conditions

  • Healthy

Eligibility Criteria

Sex
ALL
Age
18 Years - 65 Years
Healthy Volunteers
Accepted

Interventions

  • Predictability — BEHAVIORAL
    Whether the task of the next trial (comprehension or production) is predictable
  • language context — BEHAVIORAL
    whether both languages or only one language is involved in the current block

Study Details

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.

Key Dates

Start date
Aug 6, 2025
Status verified
Sep 2025
Primary completion
May 31, 2030
Completion
Jul 31, 2030

Study Design

Enrollment
360 participants (estimated)
Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
BASIC_SCIENCE

Arms

  • Experimental: Predictable one-language production & both-language comprehension
  • Experimental: Predictable both-language production & both-language comprehension
  • Experimental: Unpredictable one-language production & both-language comprehension
  • No Intervention: Single language comprehension and production

Primary Outcome Measure

Switch costs in different contexts [ Time Frame: An average of one year for each condition ]

Locations (1)

FacilityCityStateZIPSite coordinators
UCSDSan DiegoCalifornia92037
Chuchu Li
[email protected]
619-543-5221

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By research site
UCSD· San Diego, CA

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