Diffusing the bilingual lexicon: Task-based and lexical components of language switch costs
Gabriel Ong, Meredith McKague, Brendan Weekes, David K Sewell
COGNITIVE PSYCHOLOGY | ACADEMIC PRESS INC ELSEVIER SCIENCE | Published : 2019
Bilingual speakers show a response time (RT) cost when switching between languages. These costs could reflect the organization of language in a shared bilingual lexicon (Grainger, Midgley, & Holcomb, 2010) or a domain general cognitive processing cost (Green & Abutalebi, 2013). To test these accounts, we analysed RT distributions of bilingual (Spanish-English) performance on generalized lexical decision (GLD) tasks using Ratcliff (1978) diffusion model. Experiment 1 revealed that language switches decrease the rate of evidence accumulation (drift rate) and slow the cognitive processes that occur prior to decision-making (non-decision time). Experiment 2 showed that the anticipation of langua..View full abstract
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Awarded by Australian Research Council Discovery Early Career Researcher Award
This research was funded by the Melbourne School of Psychological Sciences. Gabriel Ong is supported by an Australian Government Research Training Program (RTP) Scholarship. David Sewell was supported by an Australian Research Council Discovery Early Career Researcher Award (DE140100772).