This third edition of Instructional Technology: Past, Present, and Future provides a broad introduction to the field of instructional design and technology. As with the previous editions, this book provides a comprehensive overview of significant issues and professionals in the field for graduate students and other interested readers. The content is intended to stimulate healthy debate and discussion in graduate classes and seminars. The book is organized topically to examine history, critical issues, instructional development, research, and theory. This text presents the latest information regarding computer applications in education and training, research and evaluation in instructional technology, future prospects for instructional technology, and avenues for professional development.