The plasticity of lexical selection mechanism in word production: ERP evidence from short-term language switching training in unbalanced Chinese-English bilinguals

The present study examined the plasticity of the lexical selection mechanism in bilingual word production by training a group of unbalanced Chinese-English bilinguals with a language switching task. The experimental group received an 8-day language switching training, while the control group received no training. Before and after training, the behavioral and event-related potential (ERP) data of both groups in a cued picture naming task were collected. ERP results revealed a training effect such that after training, the N2 peak latency in cue-locked ERPs was shortened only in the experimental group. These results suggest that short-term language switching experience could improve the efficiency to establish the target language task schema, and that the language control mechanism of word production in unbalanced bilinguals could be modulated by language switching experience.