This study employed a narrative review and a meta-analysis to synthesize the literature on mobile-assisted language learning (MALL). Following a systematic retrieval of literature from 2008 to 2017, 17 studies with 22 effect sizes were included based on predetermined inclusion and exclusion criteria. By categorizing the characteristics of the studies retrieved, the narrative review revealed a detailed picture of MALL research in terms of the language aspects targeted, theoretical frameworks addressed, mobile technologies adopted, and multimedia components used. The qualitative review helped to contextualize and interpret the results found in the meta-analysis, which revealed a large effect for mobile technologies in language learning, identified three variables (i.e. type of activities, modality of delivery, and duration of treatment) that might influence the effectiveness of mobile technologies, and confirmed the existence of a redundancy effect and a novelty effect in MALL practice. Implications for future research and pedagogy are discussed.

中文翻译：

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MALL关于二语技能的研究的叙述回顾和荟萃分析

本研究采用叙事回顾和荟萃分析来综合有关移动辅助语言学习 (MALL) 的文献。在对 2008 年至 2017 年的文献进行系统检索后，根据预先确定的纳入和排除标准，纳入了 17 项具有 22 个效应量的研究。通过对检索到的研究的特征进行分类，叙述性回顾揭示了 MALL 研究的详细情况，包括目标语言方面、解决的理论框架、采用的移动技术和使用的多媒体组件。定性审查有助于对元分析中发现的结果进行背景化和解释，这揭示了移动技术在语言学习中的巨大影响，确定了三个变量（即活动类型、交付方式、和治疗持续时间）可能影响移动技术的有效性，并证实了 MALL 实践中存在冗余效应和新奇效应。讨论了对未来研究和教学的影响。