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本期文章：

Grammatical complexity: ‘What Does It Mean’ and ‘So What’ for L2writing classrooms?

来源期刊：Journal of Second Language Writing

作者：Ge Lan, Qiandi Liu, Shelley Staples

摘要：

Grammatical complexity is regarded as a crucial feature of L2 writing. The construct has been widely utilized in empirical research to gauge L2 writing quality and development, particularly in English. Nevertheless, a question of paramount importance, i.e., what constitutes complexity, has not yet received adequate attention. Drawing on Bulté and Housen’s (2012) taxonomy of L2 complexity, we conducted a comprehensive and in-depth review of changes in the definition of grammatical complexity over the past two decades. Our finding suggests that grammatical complexity has been theorized from two primary perspectives: an independent perspective that grammatical complexity is static across different contexts and a dependent perspective that grammatical complexity should be investigated in response to specific registers. Also, grammatical complexity has been observed from primarily the clausal level to the clausal, phrasal and morphological levels, echoing Norris and Ortega’s (2009) claim that grammatical complexity should be studied as a multi-dimensional construct. Moreover, we have identified four main parameters used by existing literatures to define grammatical complexity: length, ratio, index and frequency. The change of each parameter is summarized with details in our review. At the end, we also discuss pedagogical implications for L2 writing instruction in the EAP context.

简评：

复杂度作为一个理论构念在二语习得领域和二语写作领域都可谓是当下的研究热点，因为语法复杂度一直被看做是L2写作的重要特征，尤其是英文写作。 

由于文献中，并没有对复杂度的定义有统一限定，也没有统一的操作定义，因此本文尝试针对二语写作领域，做一个相对全面和深度的文献综述。

文章首先针对语法复杂度的概念变革进行讨论，这些变化主要呈现在概念定义、观察性定义和操作性定义三个方面。

在谈到操作性定义时，作者把写作中复杂度分为四个维度讨论：长度、比率、指数和频次。长度主要包括句子长度，分句长度以及T-Unit的长度。比率大致包含十几种，其中最常用一种就是分句与T-unit之比。指数是通过一定的公式来生成一个复杂度数值。频次测量大都包含多种测量指标，相对全面。

文章最后总结到对于语法复杂度的研究有利于写作教师提升学生的写作复杂度意识，改善教学效果，提升学生的写作水平。

 • ❤️END❤️ • 

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