exical Production and Cognitive Control in Bilinguals
- Conditions
- Bilingual Lexical Production, Cognitive Control
- Registration Number
- NL-OMON27895
- Lead Sponsor
- This research has received partial funding from Cognitive Psychology Unit of Leiden University, which just concerns financial compensation for participants.
- Brief Summary
/A
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Pending
- Sex
- Not specified
- Target Recruitment
- 50
Participants will be healthy, volunteer, right-handed Dutch-English bilinguals, without any report and history of neurological or psychiatric problems and no counter-indications to MRI. Their age will not be more than thirty. In addition, in this study upper intermediate bilinguals will be included and the main criteria to assess this level of bilingualism will be a quick placement test published by Oxford University Press.
Left-handed volunteers, balanced bilinguals, bilinguals with less than upper intermediate proficiency in English language, the ones who are more than 30 years old, and have any report and history of neurological or psychiatric problems will be excluded from this study. Potential participants will be pre-screened for contraindications for fMRI, which include metal implants, heart arrhythmia, claustrophobia, and possible pregnancy (in females). They will additionally be pre-screened for head trauma, history of neurological or psychiatric illness and/or use of psychotropic medications. The ones with the positive results in pre-screen section will be excluded.
Study & Design
- Study Type
- Observational non invasive
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method The main endpoints of the study are to delineate the way cognitive control contributes to absence of standard language effect and reversed language effect in bilinguals, when producing L1 and L2 lexical items.
- Secondary Outcome Measures
Name Time Method - to define any differences in terms of the strength of functional connectivity in brain areas involved in cognitive control, between participants who show the reversed language effect more than the other group. <br /><br>- to define how the perisylvian language network is different between participants who have a better performance in switching between first and second language lexical items than the ones with average performance in that regard.