This much acclaimed text has been fully updated to incorporate the latest advances in the field. As leading authorities on adult education and training, Elwood Holton and Dick Swanson have revised this edition building on the work of the late Malcolm Knolwes. Keeping to the practical format of the last edition, this book is divided into three parts. The first part contains the classic chapters that describe the roots and principles of andragogy, including a new chapter, which presents Knowles' program planning model. The second part focuses on the advancements in adult learning with each chapter fully revised updated, incorporating a major expansion of Androgogy in Practice. The last part of the book will contain an updated selection of topical readings that advance the theory and will include the HRD style inventory developed by Dr. Knowles. This new edition is essential reading for adult learning practitioners and students and HRD professionals. It provides a theoretical framework for understanding the adult learning issues both in the teaching and workplace environments.