Language Control Across Modalities

University of California San Diego

Status: Enrolling

Conditions: Healthy

Treatments: Behavioral: Predictability; Behavioral: language context

Study type: Interventional

Funder types: Other; NIH

Identifiers

NCT07226921

R01HD116841 (U.S. NIH Grant/Contract)

806634

Details and patient eligibility

About

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.

Enrollment: 360 estimated patients

Sex: All

Ages: 18 to 65 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

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

Exclusion criteria

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

Trial design

Primary purpose: Basic Science

Allocation: Randomized

Interventional model: Factorial Assignment

Masking: Single Blind

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360 participants in 4 patient groups

Predictable one-language production & both-language comprehension

Experimental group

Treatment:

Behavioral: language context

Behavioral: Predictability

Predictable both-language production & both-language comprehension

Experimental group

Treatment:

Behavioral: language context

Behavioral: Predictability

Unpredictable one-language production & both-language comprehension

Experimental group

Treatment:

Behavioral: language context

Behavioral: Predictability

Single language comprehension and production

No Intervention group