Аннотация:Cognitive control plays an important role in regulating attention and behavior. Research has shown a cognitive advantage in bilinguals, however whether these results apply to people learning a foreign language later in life using formal education is not entirely clear. Due to globalization processes more people tend to communicate in multiple languages. Learning foreign languages has become a part of the compulsory education curriculum worldwide. In this work we investigate the relation between foreign language proficiency and the efficacy of the cognitive control functions: inhibition and task switching. Computerized cognitive control tasks were completed by 63 participants (45 women, aged 19–33). The acquired data was factorized resulting in 3 measures of cognitive control efficacy: general efficacy, accuracy of inhibition, and accuracy of task switching. Using the Spearman’s correlation analysis, we found that the accuracy of task switching is significantly linked with the level of language proficiency. These results are in line with the previous findings suggesting that code switching strongly involves the cognitive control functions in bilinguals.