Writing and genre scholarship has become increasingly attuned to how various nontextual features of written genres contribute to the kinds of social actions that the genres perform and to the activities that they mediate. Even though scholars have proposed different ways to account for nontextual features of genres, such attempts often remain undertheorized. By bringing together Writing, Activity, and Genre Research, and Multimodal Interaction Analysis, the authors propose a conceptual framework for multimodal activity-based analysis of genres, or Multimodal Writing, Activity, and Genre (MWAG) analysis. Furthermore, by drawing on previous studies of the laboratory notebook (lab book) genre, the article discusses the rhetorical action the genre performs and its role in mediating knowledge construction activities in science. The authors provide an illustrative example of the MWAG analysis of an emergent scientist’s lab book and discuss its contributions to his increasing participation in medical physics. The study contributes to the development of a theoretically informed analytical framework for integrative multimodal and rhetorical genre analysis, while illustrating how the proposed framework can lead to the insights into the sociorhetorical roles multimodal genres play in mediating such activities as knowledge construction and disciplinary enculturation.

写作和体裁研究越来越关注书面体裁的各种非文本特征如何对体裁所执行的社会行为及其中介活动做出贡献。尽管学者们提出了不同的方法来解释体裁的非文本特征，但这种尝试往往仍然缺乏理论化。通过将写作、活动和体裁研究以及多模态交互分析结合起来，作者提出了一个基于多模态活动的体裁分析或多模态写作、活动和体裁 (MWAG) 分析的概念框架。此外，本文借鉴了实验室笔记本（实验室书）体裁的先前研究，讨论了该体裁的修辞行为及其在调解科学知识建构活动中的作用。作者提供了一个新兴科学家实验室书籍的 MWAG 分析的说明性示例，并讨论了它对他越来越多地参与医学物理学的贡献。该研究有助于开发综合多模态和修辞体裁分析的理论分析框架，同时说明所提出的框架如何能够洞察多模态体裁在调解知识构建和学科文化等活动中所发挥的社会修辞作用。