Written by the leading figures in the field, this book clearly defines and describes the rapidly converging fields of instructional design, instructional technology, and performance technology.The book discusses the trends and issues that have affected the field in the past and present, and those trends and issues likely to affect it in the future. It includes writings from Walter Dick, Marcy Driscoll, Don Ely, Kent Gustafson, David Hawkridge, Mike Hannafin, John Keller, David Jonassen, David Merrill, Charlie Reigeluth, Rita Richey, Allison Rossett, Bob Reiser, and Jack Dempsey.