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Mouse tracking reveals that bilinguals behave like experts*

Published online by Cambridge University Press:  12 May 2015

SARA INCERA*
Affiliation:
Language Research Laboratory, Department of Psychology, Cleveland State University.
CONOR T. McLENNAN
Affiliation:
Language Research Laboratory, Department of Psychology, Cleveland State University.
*
Address for correspondence: Sara Incera, Department of Psychology, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115saraincera@gmail.com

Abstract

We used mouse tracking to compare the performance of bilinguals and monolinguals in a Stroop task. Participants were instructed to respond to the color of the words (e.g., blue in yellow font) by clicking on response options on the screen. We recorded participants’ movements of a computer mouse: when participants started moving (initiation times), and how fast they moved towards the correct response (x-coordinates over time). Interestingly, initiation times were longer for bilinguals than monolinguals. Nevertheless, when comparing mouse trajectories, bilinguals moved faster towards the correct response. Taken together, these results indicate that bilinguals behave qualitatively differently from monolinguals; bilinguals are “experts” at managing conflicting information. Experts across many different domains take longer to initiate a response, but then they outperform novices. These qualitative differences in performance could be at the root of apparently contradictory findings in the bilingual literature.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2015 

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Footnotes

*

We thank Daniel Mirman for his valuable feedback on the statistical analysis.

This work includes portions of Sara Incera's Master's thesis (Incera, 2014). Data from the English–Spanish group is reported separately in a manuscript that discusses competition between the two languages of a bilingual participant (Incera & McLennan, 2015).

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