Language athletes: Dual-language code-switchers exhibit inhibitory control advantages

Area of Science:

• Cognitive Psychology
• Neuroscience
• Linguistics

Background:

• Bilingual cognition research is shifting towards experienced-based perspectives.
• Code-switching's impact on executive functions, particularly inhibitory control, is under-examined.
• Dual-language environments may foster cognitive control through habitual code-switching.

Purpose of the Study:

• To investigate the effect of code-switching frequency and intentionality on inhibitory control in bilinguals.
• To explore the role of the dual-language environment in shaping cognitive control.
• To determine if code-switching confers executive functioning advantages.

Main Methods:

• 266 French Canadian bilinguals completed online Flanker and bilingual Stroop tasks.
• Participants also completed demographic and language background questionnaires.
• Stepwise multiple regressions analyzed predictors of inhibitory control effects.

Main Results:

• Habitual French-to-English code-switching correlated with better goal-monitoring and inhibition (Flanker task).
• Frequent unintentional code-switching negatively impacted inhibitory skills on the language-specific task (Stroop).
• Intentional code-switching in a dual-language context was linked to enhanced inhibitory control.

Conclusions:

• Dual-language environments promote intentional code-switching, which is associated with improved inhibitory control.
• The benefits of code-switching on executive functions are contingent on the deliberateness of the switching.
• Individual language experience and interactional context are crucial for understanding bilingual executive functioning.