IDENTIFYING A THRESHOLD FOR THE EXECUTIVE FUNCTION ADVANTAGE IN BILINGUAL CHILDREN
IDENTIFYING A THRESHOLD FOR THE EXECUTIVE FUNCTION ADVANTAGE IN BILINGUAL CHILDREN
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DOI：
10.1017/s0272263116000486
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发表时间：
2018-03-01
影响因子：
4.1
通讯作者：
Serratrice, Ludovica
中科院分区：
文献类型：
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作者：
De Cat, Cecile;Gusnanto, Arief;Serratrice, Ludovica
探讨双语执行功能相关性的文献非常多，但迄今为止，很少有研究集中在儿童身上，对儿童来说，双语优势似乎比成人更加不一致。我们调查了一组高度异质的儿童（在双语经验和社会经济地位方面），并确定了双语经验的关键阈值，从中可以在群体层面观察到优势。采用的建模方法允许使用年龄和社会经济地位的细粒度连续因素，从而有效控制其影响并隔离双语体验的具体影响。我们率先使用 Cox 比例风险回归来分析 Simon 任务的性能。这允许对所有数据点进行建模，而无需进行转换或异常值去除，并在同一分析中捕获准确性和反应时间，同时能够处理多个预测变量。
The literature exploring the executive function correlates of bilingualism is vast, but to date, few studies have concentrated on children, for whom the bilingual advantage appears even more inconsistent than for adults. We investigate a highly heterogeneous group of children (in terms of bilingual experience and socioeconomic status) and identify the critical threshold of bilingual experience from which an advantage can be observed at group level. The modeling methods adopted allow the use of fine-grained, continuous factors for age and socioeconomic status, thereby effectively controlling for their effect and isolating the specific effect of bilingual experience. We pioneer the use of Cox Proportional Hazard regression to analyze performance in the Simon task. This allows the modeling of all data points without transformation or outlier removal, and captures both accuracy and reaction time within the same analysis, while being able to handle multiple predictor variables.