In this fully revised and updated edition of Principles of Human Resource Development, the authors present a rigorous and comprehensive overview of the theory and practice of HRD. They provide the building blocks of human resource development and illustrate the relationships among all the components that constitute the field. Showcasing the various roles and practices of HRD-including organizational learning, instructional design, program planning and evaluation, and internal consulting-they identify concrete ways to improve the HRD practice in order to raise its visibility and enhance its credibility within the organization. An all-in-one resource, this book will be indispensable for educators, students, and human resource professionals alike.