Age-related effects over bilingual language control and executive control
Age-related effects over bilingual language control and executive control
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DOI：
10.1017/s1366728913000138
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发表时间：
2015-01-01
影响因子：
3.6
通讯作者：
Costa, Albert
中科院分区：
文献类型：
--
作者：
Calabria, Marco;Branzi, Francesca M.;Costa, Albert
本研究报告有两个目的。首先，我们研究了与年龄相关的双语语言控制（bLC）机制在整个生命周期的变化。其次，我们探讨BLC机制和领域一般执行（EC）系统之间的关系，通过看年龄对这两个系统的影响。为了做到这一点，我们比较了三个年龄组的双语者（青年，中年和老年人）在语言转换任务和非语言转换任务的表现。我们发现了一个年龄相关的变化，在非语言转换成本，但不是在语言转换成本。此外，我们没有发现转换成本的大小之间有任何相关性。综上所述，这些结果表明，BLC是不受年龄影响的EC系统，有趣的是，我们增加了新的证据表明，BLC机制是不完全附属于那些域一般EC系统。
The aim of the present study is two-fold. First, we investigate age-related changes to bilingual language control (bLC) mechanisms across lifespan. Second, we explore the relation between bLC mechanisms and those of the domain-general executive (EC) system by looking at age effects on these two systems. To do so, we compare the performances of the three age groups of bilinguals (young, middle-aged and elderly) in a language switching task to those of non-linguistic switching task. We found an age-related change in the non-linguistic switch cost but not in the language switch cost. Moreover, we did not find any correlation between the magnitudes of the switch costs. Taken together these results indicate that bLC is not affected by age as the EC system is, and interestingly, we add new evidence that the bLC mechanisms are not fully subsidiary to those of the domain-general EC system.