Chapter published in:Bilingualism, Executive Function, and Beyond: Questions and insights
Edited by Irina A. Sekerina, Lauren Spradlin and Virginia Valian
[Studies in Bilingualism 57] 2019
► pp. 161–180
Effects of dense code-switching on executive control
Bilingualism is reported to re-structure executive control networks, but it remains unknown which aspects of the bilingual experience cause this modulation. This study explores the impact of three code-switching types on executive functions: (1) alternation, (2) insertion, and (3) dense code-switching or congruent lexicalization. Current models hypothesize that different code-switching types challenge different aspects of the executive system because they vary in the extent and scope of language separation. Two groups of German-English bilinguals differing in dense code-switching frequency participated in a flanker task under conditions varying in degree of trial-mixing and resulting demands to conflict monitoring. Bilinguals engaging in more dense code-switching showed inhibitory advantages in the condition requiring most conflict monitoring. Moreover, dense code-switching frequency correlated positively with monitoring skills. This suggests that dense code-switching is a key experience shaping bilinguals’ executive functioning and highlights the importance of controlling for participants’ code-switching habits in bilingualism research.
Keywords: code-switching, executive functions, flanker task
Published online: 12 June 2019
Abutalebi, J., Green, D. W.
Bhatt, R., Bolonyai, A.
Bialystok, E., Craik, F. I. G., Luk, G.
Botvinick, M., Carter, C. S., Braver, T. S., Barch, D. M., Cohen, J. D.
Costa, A., Hernandez, M., Sebastian-Galles, N.
Costa, A., Hernandez, M., Costa-Faidella, J., Sebastian-Galles, N.
De Groot, A. M. B., Christoffels, I. K.
Deuchar, M., Muysken, P. & Wang, S.
Green, D. W.
Green, D. W., Abutalebi, J.
Green, D. W., Wei, L.
Guo, T., Liu, H., Misra, M., Kroll, J. F.
Li, P., Zhang, F., Tsai, E., Puls, B.
Morales, J., Yudes, C., Gomez-Ariza, C. J., Teresa Bajo, M.
Paap, K. R., Greenberg, Z. I.
Prior, A., Gollan, T. H.
Raven, J., Raven, J. C., & Court, J. H.
Soveri, A., Rodriguez-Fornells, A., Laine, M.