Bialystok Ellen, Viswanathan Mythili
Department of Psychology, York University, 4700 Keele Street, Toronto, Ontario, Canada.
Cognition. 2009 Sep;112(3):494-500. doi: 10.1016/j.cognition.2009.06.014. Epub 2009 Jul 16.
The present study used a behavioral version of an anti-saccade task, called the 'faces task', developed by [Bialystok, E., Craik, F. I. M., & Ryan, J. (2006). Executive control in a modified anti-saccade task: Effects of aging and bilingualism. Journal of Experimental Psychology: Learning, Memory, and Cognition, 32, 1341-1354] to isolate the components of executive functioning responsible for previously reported differences between monolingual and bilingual children and to determine the generality of these differences by comparing bilinguals in two cultures. Three components of executive control were investigated: response suppression, inhibitory control, and cognitive flexibility. Ninety children, 8-years old, belonged to one of three groups: monolinguals in Canada, bilinguals in Canada, and bilinguals in India. The bilingual children in both settings were faster than monolinguals in conditions based on inhibitory control and cognitive flexibility but there was no significant difference between groups in response suppression or on a control condition that did not involve executive control. The children in the two bilingual groups performed equivalently to each other and differently from the monolinguals on all measures in which there were group differences, consistent with the interpretation that bilingualism is responsible for the enhanced executive control. These results contribute to understanding the mechanism responsible for the reported bilingual advantages by identifying the processes that are modified by bilingualism and establishing the generality of these findings across bilingual experiences. They also contribute to theoretical conceptions of the components of executive control and their development.
本研究采用了一种反眼跳任务的行为版本,即由[比亚韦斯托克、E.、克雷克、F.I.M.和瑞安、J.(2006年)。改良反眼跳任务中的执行控制:衰老和双语的影响。《实验心理学杂志:学习、记忆和认知》,32卷,1341 - 1354页]开发的“面孔任务”,以分离出导致先前报道的单语和双语儿童之间差异的执行功能成分,并通过比较两种文化中的双语者来确定这些差异的普遍性。研究了执行控制的三个成分:反应抑制、抑制控制和认知灵活性。九十名8岁儿童分为三组之一:加拿大的单语儿童、加拿大的双语儿童和印度的双语儿童。在基于抑制控制和认知灵活性的条件下,两种环境中的双语儿童都比单语儿童速度更快,但在反应抑制或不涉及执行控制的控制条件下,各组之间没有显著差异。在所有存在组间差异的测量中,两个双语组的儿童彼此表现相当,与单语儿童不同,这与双语导致执行控制增强的解释一致。这些结果有助于通过识别因双语而改变的过程并确定这些发现在不同双语经历中的普遍性来理解导致所报道的双语优势的机制。它们也有助于对执行控制的成分及其发展的理论概念。