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Toward Personalized Scaffolding and Fading of Motivational Support in L2 Learner–Dialogue Agent Interactions: An Exploratory Study

机译：在L2学习者对话代理相互作用中的个性化脚手架和促进诱导支持的促进脚手架：探索性研究

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This article proposes a computer-based approach to effectively enhance second language learners' willingness to communicate in the target language. To do so, we implemented a conversational agent embedding a dialogue management model based on two conversational strategies (i.e., communication strategies and affective backchannels), serving as scaffolds for enhancing learners' willingness to communicate in the target language. Here, we report on differences observed among second language learners' preferences for both conversational strategies according to their initial level of willingness to communicate and on variations of their willingness with respect to such differences. Although we found that most students generally preferred a combination of both strategies, learners' preferences and the effects of the support provided by these strategies varied according to their level of willingness to communicate. Learners with lower willingness to communicate tended to prefer affective backchannels, whereas those with higher willingness to communicate seemed to favor communication strategies. These results were consistent with post-test results, which showed that learners' expected willingness to communicate tended to be higher after interacting with systems embedding their preferred strategies. In sum, these results are preliminary evidence of the meaningfulness of accounting for such learners' preferences in adaptively using and fading the strategies employed by conversational agents to motivate second language learners to communicate in the target language.
机译：本文提出了一种基于计算机的方法，以有效提高第二语言学习者在目标语言中沟通的意愿。为此，我们实施了基于两项对话策略（即通信策略和情感后扫描区）嵌入对话管理模型的会话代理，作为加强学习者在目标语言中沟通的脚手架的脚手架。在这里，我们根据其初始致力于沟通的初始意愿和对这些差异愿意变化的初始愿望，报告第二语言学习者对两种语言学习者偏好观察的差异。虽然我们发现大多数学生通常优先于战略，学习者的偏好和这些策略所提供的支持的效果的组合，但根据其沟通的意愿水平而变化。学习者愿意往往沟通的愿意往往更喜欢情感的背影区，而那些具有更高意愿沟通的人似乎有利于通信策略。这些结果与测试后结果一致，表明，学习者在与嵌入其首选战略的系统交互后，学习者的预期趋于更高。总而言之，这些结果是在适应性地使用和撤消对会话代理人雇用的战略中占用和撤消促使第二语言学习者在目标语言中沟通的策略的有意义的初步证据。

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