Exploring the Relationship Between Working Memory Capacity and L2 Oral Fluency

Danh C. Vu, Thanh V. Nguyen, Nakhon Kitjaroonchai
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Abstract

This study investigated the relationship between working memory capacity (WMC) and L2 oral fluency and explored the maintenance of newly presented information in L2 speaking production. When performing speech production tasks, knowledge from long-term memory is at frequent use and hence involves the operation of the episodic buffer, one component of the working memory system, where information is retrieved from long-term memory and stored in chunks as we speak in chunks. In this study, we measured WMC by assessing chunk capacity and chunk size held in and retrieved from the episodic buffer. Chunk capacity was measured by Pair-word Speaking Task; chunk size was measured by Procedure Description Task; and oral fluency was measured by speech rate and mean length of run using an IELTS speaking task. Twenty-nine English-major students participated in this study. The results showed a strong positive correlation between chunk capacity and the two measures of fluency while chunk size negatively correlated with fluency. Data from the recall interviews revealed that participants employed various strategies for the maintenance of the presented information which involved different types of information binding.
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探索工作记忆能力与 L2 口语流利程度之间的关系
本研究调查了工作记忆容量(WMC)与第二语言口语流利性之间的关系,并探讨了第二语言口语表达中新呈现信息的保持问题。在执行语音制作任务时,长时记忆中的知识会被频繁使用,因此涉及到工作记忆系统的一个组成部分--外显缓冲器的运行,在我们说话时,信息会从长时记忆中检索出来并以块为单位存储。在这项研究中,我们通过评估外显缓冲区中保存和检索的信息块容量和信息块大小来测量工作记忆容量。语块容量通过 "配对单词口语任务 "进行测量;语块大小通过 "程序描述任务 "进行测量;口语流利度通过 "雅思口语任务 "中的语速和平均运行长度进行测量。29 名英语专业学生参加了这项研究。研究结果表明,语块容量与流利度的两个测量指标之间存在很强的正相关,而语块大小与流利度之间存在负相关。回忆访谈的数据显示,参与者采用了各种策略来保持所呈现的信息,其中涉及不同类型的信息绑定。
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