Research articles have begun to occupy the status of a prominent academic genre, as publishing one is a significant way to gain credibility and to establish oneself as a researcher among members of a discourse community. One way to distinguish discourse communities is to look at the linguistic features used in the generic structure of their research articles. One of these linguistic features is metadiscourse which deals with the connection between authors, texts and readers. The present study adopted Hyland’s (2005a) model of metadiscourse to compare the use of interactional markers in the moves of 40 research article introductions from Applied Linguistics and Chemistry. Findings indicated some variations in the way that disciplinary authors employed interactional devices in introduction moves. These findings can be discussed in terms of familiarizing novice writers with discipline-specific features of their research article introduction and interpersonality in establishing a link between a text and readers.

研究文章已开始占据重要学术流派的地位，因为发表研究文章是获得可信度和在话语社区成员中确立自己作为研究人员的重要途径。区分话语社区的一种方法是查看其研究文章的通用结构中使用的语言特征。这些语言特征之一是元话语，它处理作者、文本和读者之间的联系。本研究采用 Hyland (2005a) 的元话语模型来比较应用语言学和化学的 40 篇研究文章介绍中交互标记的使用。研究结果表明，学科作者在介绍动作中采用交互装置的方式存在一些差异。