An investigation of the role of executive function in language switching among Igbo bilinguals
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- NGN 5000
Background of the Study
Executive function, encompassing cognitive processes such as inhibition, working memory, and cognitive flexibility, is crucial for managing language switching in bilingual individuals. Igbo bilinguals, who frequently alternate between Igbo and English, rely on these executive processes to suppress interference from the non-target language and to switch efficiently. Research suggests that stronger executive function correlates with more effective language switching and overall bilingual performance (Ikechukwu, 2023). This study investigates the role of executive function in language switching among Igbo bilinguals by employing cognitive tasks that measure inhibition, task switching, and working memory. Participants will perform language switching tasks while their performance on executive function measures is recorded. The goal is to determine whether individuals with superior executive control exhibit more efficient language switching, as reflected in faster reaction times and fewer errors. The findings will contribute to theoretical models of bilingual language processing and have practical implications for educational strategies designed to enhance cognitive control in bilingual learners (Chukwudi, 2024; Nwankwo, 2025).
Statement of the Problem
Although executive function is known to facilitate language switching, its specific role among Igbo bilinguals remains underexplored. Current models often generalize findings from other language pairs, ignoring the unique linguistic and cultural context of Igbo–English bilingualism. This gap limits our understanding of the cognitive mechanisms that enable effective language switching and hinders the development of targeted cognitive training and educational interventions. Without detailed insights into executive function’s role, strategies to improve bilingual performance in Igbo speakers may be less effective (Ikechukwu, 2023; Chukwudi, 2024).
Objectives of the Study:
1. To assess executive function in Igbo bilinguals.
2. To determine the relationship between executive function and language switching efficiency.
3. To propose interventions to enhance cognitive control.
Research Questions:
1. How do executive function skills relate to language switching performance in Igbo bilinguals?
2. Which executive functions are most predictive of effective language switching?
3. What interventions can improve executive control in bilingual individuals?
Significance of the Study :
This study is significant as it investigates the cognitive underpinnings of language switching in Igbo bilinguals, with a focus on executive function. The outcomes will inform educational and cognitive training programs aimed at optimizing bilingual performance (Ikechukwu, 2023; Nwankwo, 2025).
Scope and Limitations of the Study:
This study is limited to examining executive function and language switching in Igbo bilinguals using cognitive assessments, without extending to other language groups.
Definitions of Terms:
• Executive Function: Cognitive processes including inhibition, working memory, and flexibility.
• Language Switching: The ability to alternate between languages during communication.
• Igbo Bilinguals: Individuals fluent in Igbo and another language, typically English.
