Cognitive Sciences - Publications

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Browsing Cognitive Sciences - Publications by Author "Bhandari, Pratik"
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    High proficient bilinguals bring in higher executive control when encountering diverse interlocutors
    ( 2020-10-01) Bhandari, Pratik ; Prasad, Seema ; Mishra, Ramesh Kumar
    We examined if bilinguals are sensitive to contextual factors with regard to the presence of interlocutors and if this reflects in how they modulate their executive control. First, we introduced Telugu–English bilinguals to monolingual, bilingual and neutral interlocutors in the form of cartoon characters through an interactive session. Following this, they performed the attention network task (ANT) with the image of interlocutors appearing on every trial before the flankers. High proficient bilinguals (in L2) were overall faster on the ANT (indicating higher executive control) when different interlocutors appeared randomly in a mixed block compared to the low proficient bilinguals. However, this effect was not found when the appearance of the interlocutors along-side the ANT task was blocked. These data demonstrate that high proficient bilinguals brought in higher executive control when the context required higher monitoring (different interlocutors appearing randomly) compared to the low proficient bilinguals. We interpret the findings with regard to the adaptive control hypothesis.
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    Language proficiency does not modulate executive control in older bilinguals
    ( 2019-11-02) Mishra, Ramesh Kumar ; Padmanabhuni, Manasa ; Bhandari, Pratik ; Viswambharan, Shiji ; Prasad, Seema Gorur
    We examined if language proficiency modulates performance in tasks that measure executive control in older Telugu-English bilinguals (n = 50, mean age = 57.15 years). We administered numerical Stroop task, Attention Network Task, Dimensional Change Card Sorting task, and stop-signal task that are known to tap into different aspects of executive functioning on healthy aging Telugu-English bilinguals. Second language (English) proficiency was calculated as a cumulative score that considered both subjective and objective measures of L2 fluency and use. Bilinguals were divided into two groups based on the cumulative score and compared on each task. We did not find any effect of language proficiency on any of the executive control measures. The additional Bayesian analysis also supported these findings. Therefore, the results do not support the claim that bilingual language proficiency modulates executive control, at least in the elderly population. We discuss the results with regard to the issue of bilingual advantage in executive control and the role of age and language use.