研究发现双语切换过程中普遍存在语码切换代价。该研究在图片命名范式下探讨了不同熟练程度的汉-英双语者在汉、英两种语言的语码切换代价及其差异。结果发现:不同熟练程度的汉-英双语者在双语切换过程中均存在语码切换代价;不熟练双语者的语码切换代价表现出不对称性,而熟练双语者的语码切换代价没有出现不对称性。研究显示第二语言的熟练程度是影响语码切换代价不对称性的重要因素。研究结果支持了特定语言提取阈限假说。
Bilingual researchers found that language switching cost existed commonly in language switching. This study employed picture naming paradigm to investigate the language switching cost and its difference in Chinese-English bilinguals of different proficiency. The results showed that there was language switching cost in Chinese-English bilinguals; the less proficient bilinguals demonstrated switching cost asymmetry while the highly proficient bilinguals did not. This suggests that the proficiency of the second language is one of the important factors affecting switching cost asymmetry. It supports the language specific selection threshold hypothesis.
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