The 2020 publication of The Adult Learner: The Definitive Classic in Adult Education and Human Resource Development by Knowles, Holton, Swanson, and Robinson is the ninth edition of a 1973 book by Malcolm S. Knowles, The Adult Learner: A Neglected Species. Although the foundational idea and concepts have remained, expectedly, much has changed since the first edition of the book. This review will address the changes made to the volume between the publication of its eighth (2015) and ninth (2020) edition. Most notably, the ninth edition features a fourth author, Petra A. Robinson, in addition to Knowles, Holton, and Swanson. Given Robinson’s research agenda, which focuses on issues of diversity, equity, inclusion, and social justice, it makes sense that a chapter on diversity and inclusion in adult learning (Chapter 11) was added. Another chapter added to the 2020 edition focuses on andragogy and the online adult learner (Chapter 13), discussing a highly relevant topic in a period in which online learning has become a norm, especially if learners are self-directed. Unsurprisingly, minor edits in chapter order and within chapters were also made (e.g., Chapter 17, “The Future of Andragogy,” was updated to include a section on andragogy and qualitative research) and some sections and chapters (e.g., Whole-Part-Whole LearningModel) were removed. As in the previous edition, the content is organized into five parts, each comprised of several chapters. The first two parts, “Adult Learning” and “The Backdrop of Learning and Teaching Theories,” which examine foundational concepts and theories, have remained the same between the two editions. The primary audience of these two parts has also remained the same as these sections are particularly useful for graduate students and novice researchers in the field. The two new, practice-oriented chapters are included in the third part, which focuses on the advancements in adult learning, placing andragogy within the context of contemporary practice. Chapters in this part examine andragogy in relation to diversity and inclusion, neuroscience, and technology. Part four now includes narratives regarding international and future perspectives, while the concluding part is dedicated to tools and resources for implementing andragogy. By reorganizing sections Book Reviews

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书评：成人学习者：MS Knowles、EF Holton III、RA Swanson 和 PA Robinson 的成人教育和人力资源开发的权威经典

2020 年出版的《成人学习者：成人教育和人力资源开发的权威经典》（Knowles、Holton、Swanson 和 Robinson）是 Malcolm S. Knowles 于 1973 年出版的《成人学习者：被忽视的物种》一书的第九版。尽管基本思想和概念仍然存在，但预计自本书第一版以来发生了很大变化。本次审查将讨论在其第八版（2015 年）和第九版（2020 年）出版之间对卷的更改。最值得注意的是，除了诺尔斯、霍尔顿和斯旺森之外，第九版还有第四位作者佩特拉·A·罗宾逊。鉴于 Robinson 的研究议程侧重于多样性、公平性、包容性和社会正义问题，因此增加了关于成人学习中的多样性和包容性的章节（第 11 章）是有道理的。2020 年版新增的另一章侧重于成人教育学和在线成人学习者（第 13 章），讨论了在线学习已成为常态的一个高度相关的话题，尤其是在学习者自主学习的情况下。不出所料，还对章节顺序和章节内进行了小幅编辑（例如，第 17 章，“Andragogy 的未来”，更新为包括关于 andragogy 和定性研究的部分）和一些章节和章节（例如，Whole-Part-整个学习模型）被删除。与上一版一样，内容分为五个部分，每个部分由几个章节组成。前两个部分，“成人学习”和“学与教理论的背景”，审查基本概念和理论，在两个版本之间保持不变。这两个部分的主要受众也保持不变，因为这些部分对于该领域的研究生和新手研究人员特别有用。第三部分包括两个新的、以实践为导向的章节，重点关注成人学习的进步，将成人教育学置于当代实践的背景下。这部分的章节探讨了与多样性和包容性、神经科学和技术相关的教育学。第四部分现在包括关于国际和未来观点的叙述，而最后部分则专门介绍用于实施和学的工具和资源。通过重新组织部分书评 第三部分包含以实践为导向的章节，重点关注成人学习的进步，将教育学置于当代实践的背景下。这部分的章节探讨了与多样性和包容性、神经科学和技术相关的教育学。第四部分现在包括关于国际和未来观点的叙述，而最后部分则专门介绍用于实施和学的工具和资源。通过重新组织部分书评 第三部分包含以实践为导向的章节，重点关注成人学习的进步，将教育学置于当代实践的背景下。这部分的章节探讨了与多样性和包容性、神经科学和技术相关的教育学。第四部分现在包括关于国际和未来观点的叙述，而最后部分则专门介绍用于实施和学的工具和资源。通过重新组织部分书评 而结论部分则专门介绍用于实施雌激素疗法的工具和资源。通过重新组织部分书评 而结论部分则专门介绍用于实施雌激素疗法的工具和资源。通过重新组织部分书评