Predicting executive functions in bilinguals using ecologically valid measures of code-switching behavior
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One of the factors claimed to impact executive functions in bilinguals is code-switching. New insights into how exactly code-switching affects executive functions can be obtained if attention is paid to the kind of code-switching bilinguals engage in, and not just the frequency of code-switching. This raises the question of how code-switching habits can be assessed in experimental research. This study presents two ecologically valid, yet efficient, methods of assessing code-switching habits: a frequency judgment task based on authentic stimuli, and a bilingual email production task. The two tasks converged in revealing differences in dense code-switching in two groups of German-English bilinguals. Moreover, the frequency judgment task predicted code-switching frequency in the ecologically more valid email production task. Importantly, both tasks revealed code-switching patterns that explained group differences observed in executive performance. The bilinguals engaging in frequent dense code-switching excelled at the aspect of executive functions (conflict monitoring) predicted to be related to code-switching based on existing processing models. Hence, both methods are recommended for use as code-switching measurements in bilingualism research.
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HOFWEBER, Julia, Theodoros MARINIS, Jeanine TREFFERS-DALLER, 2019. Predicting executive functions in bilinguals using ecologically valid measures of code-switching behavior. In: SEKERINA, Irina A., ed., Lauren SPRADLIN, ed., Virginia VALIAN, ed.. Bilingualism, executive function, and beyond : questions and insights. Amsterdam: John Benjamins Publishing Company, 2019, pp. 181-205. Studies in bilingualism. 57. ISBN 978-90-272-0243-7. Available under: doi: 10.1075/sibil.57BibTex
@incollection{Hofweber2019Predi-47954,
year={2019},
doi={10.1075/sibil.57},
title={Predicting executive functions in bilinguals using ecologically valid measures of code-switching behavior},
number={57},
isbn={978-90-272-0243-7},
publisher={John Benjamins Publishing Company},
address={Amsterdam},
series={Studies in bilingualism},
booktitle={Bilingualism, executive function, and beyond : questions and insights},
pages={181--205},
editor={Sekerina, Irina A. and Spradlin, Lauren and Valian, Virginia},
author={Hofweber, Julia and Marinis, Theodoros and Treffers-Daller, Jeanine}
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