Setting the stage for the central themes and the articles in this special issue, this introduction delineates the epistemological confluences, complementarities, and differences among conversation analysis (CA), on the one hand, and 2 strands of usage-based linguistics, on the other—namely, usage-based second-language acquisition (SLA) and interactional linguistics. This implies depicting how an increased interest in actual usage within the field of linguistics, including usage-based SLA, has converged with the basic assumptions in CA and interactional linguistics: (a) Language use is primordially and primarily situated in social interaction, and (b) language emerges out of social interaction. We scrutinize the grounds for combining the 3 frameworks for investigating second language development, illustrate such combination through the discussion of some of the rare existing studies that integrate these frameworks, and argue for the need to develop the methodological combinations further in order to move toward an ecologically more valid understanding of how language develops out of language use. On that basis, and additionally drawing on the individual contributions to the special issue, we then outline some implications for L2 education.

中文翻译：

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社交互动中和社交互动中的新兴 L2 语法：特刊简介

本导言为本期特刊的中心主题和文章奠定了基础，一方面描述了会话分析 (CA) 与基于用法的语言学的 2 个分支之间的认识论汇合、互补性和差异——即基于使用的第二语言习得（SLA）和交互语言学。这意味着描述对语言学领域内实际使用的兴趣增加，包括基于使用的 SLA，如何与 CA 和交互语言学中的基本假设融合：（a）语言使用最初且主要位于社交互动中，并且（ b) 语言产生于社会互动。我们仔细研究了结合这 3 个框架来调查第二语言发展的理由，通过讨论整合这些框架的一些罕见的现有研究来说明这种组合，并论证有必要进一步发展方法组合，以便对语言如何从语言使用发展出来的生态更有效的理解。在此基础上，并根据个人对特刊的贡献，我们然后概述了对第二语言教育的一些影响。