Malcolm S. Knowles was one of the nation’s leading authorities on adult education and training. He was the founding executive director of the Adult Education Association and Professor of Adult and Community College Education at North Carolina State University.Elwood F. Holton III is Professor Emeritus of Human Resource Development and Adult Education in the School of Leadership and Human Resource Development at Louisiana State University. Richard A. Swanson is Professor Emeritus of Human Resource Development and Adult Education at the University of Minnesota. Petra A. Robinson is Associate Professor of Adult Education and Human Resource Development in the School of Leadership and Human Resource Development at Louisiana State University.

"Overall, the ninth edition of The Adult Learner discusses foundational as well as current issues in adult learning and human resource development, keeping the content relevant and beneficial to a diverse audience." - Alisa Belzer, Adult Education Quarterly

• Part 1: Adult Learning, 1. Introduction to Adult Learning, 2. Exploring the World of Learning Theory, 3. Andragogy: A Theory of Adult Learning, 4. The Andragogical Process Model for Learning, 5. Andragogy in Practice, Part 2: The Backdrop of Learning and Teaching Theories, 6. Theories of Learning, 7. Theories of Teaching, 8. Adult Learning Within Human Resource Development, Part 3: Advancements in Adult Learning, 9. New Perspectives on Andragogy, 10. Beyond Andragogy, 11. Diversity and Inclusion in the Adult Education Classroom, 12. Neuroscience and Andragogy, 13. Andragogy and Adult Online Learning, 14. Effective Computer-Based Instruction for Adults, Part 4: International and Future Perspectives on Andragogy, 15. European Perspectives on Adult Learning, 16. Andragogy: International History, Meaning, Context, and Function, 17. The Future of Andragogy, Part 5: Tools and Resources for Implementing Andragogy, 18. Andragogical Learner Analysis Using the Andragogy in Practice Framework, 19. Andragogy in Practice Inventory, 20. Guidelines for the Using Learning Contracts, 21. Core Competency Diagnostic and Planning Guide, 22. Personal Adult Learning Style Inventory