Beijing Key Laboratory of Applied Experimental Psychology, Faculty of Psychology, Beijing Normal University, Beijing, 10085, China; Department of Psychology, Normal College & School of Teacher Education, Qingdao University, Qingdao, 266071, China.
Grundy Lab, Department of Psychology, Iowa State University, Ames, IA, 50011, USA.
Neuropsychologia. 2020 May;142:107441. doi: 10.1016/j.neuropsychologia.2020.107441. Epub 2020 Mar 19.
The effect of language context on bilingual language control has been widely studied, but research examining how these contexts affect executive control is relatively limited. In the present study, we used EEG to examine how language context in production influences executive control in bilinguals. A single group of unbalanced Chinese-English bilinguals completed a modified Flanker task interleaved with a picture-naming task, such that executive control performance was measured in three contexts: Chinese, English, and mixed-language. Event-related potentials (ERPs) revealed larger N2 amplitudes and smaller P3 and LPC (late positive component) amplitudes for the mixed-language context than the single-language context across both congruent and incongruent trials. Moreover, during the language production task, LPC amplitudes in mixed-language context were smaller than in the single-language contexts. These findings suggest that language contexts modulate both bilingual language control and domain-general executive control.
语言语境对双语语言控制的影响已得到广泛研究，但研究双语语境如何影响执行控制的相对较少。在本研究中，我们使用 EEG 来研究生产中的语言语境如何影响双语者的执行控制。一组不平衡的中英双语者完成了一项改良的 Flanker 任务，其中穿插了图片命名任务，以便在三种语境下测量执行控制表现：中文、英文和混合语言。事件相关电位（ERP）显示，在一致和不一致的试验中，混合语言语境的 N2 振幅较大，P3 和 LPC（晚期正成分）振幅较小，而单语言语境的 N2 振幅较大，P3 和 LPC（晚期正成分）振幅较小。此外，在语言产生任务中，混合语言语境下的 LPC 振幅小于单语言语境下的 LPC 振幅。这些发现表明，语言语境既调节双语语言控制，也调节一般领域的执行控制。
