Trends and Issues in Instructional Design and Technology, Third Edition,provides readers with a clear picture of the field of instructional design and technology, the trends and issues that have affected it in the past and present, and those trends and issues likely to affect it in the future. The text will prepare its readers to master the skills associated with IDT, clearly describe the nature of the field, familiarize themselves with the field's history and its current status, and describe recent trends and issues impacting on the field. Written by the leading figures in the field with contributions from Elizabeth Boling, Richard Clark, Ruth Clark, Walter Dick, Marcy Driscoll, Michael Hannafin, John Keller, James Klein, David Jonassen, Richard Mayer, David Merrill, Charles Reigeluth, Marc Rosenberg, Allison Rossett, Sharon Smaldino, Harold Stolovitch, Brent Wilson, Robert Reiser, John Dempsey, and many others, this book clearly defines and describes the rapidly converging fields of instructional design, instructional technology, and performance technology. Previous editions of this book have received outstanding book awardsfrom the Association for Educational Communications and Technology (AECT), the AECT Division of Design and Development, and the International Society for Performance Improvement (ISPI). The new edition features a plethora of updates including: eighteen new chapters, each of which focuses on an important recent trend or issue in the instructional design and technology (IDT) field: An updated view of such topics as whole task approaches to instructional design, motivational design, models of evaluation, performance support and informal learning, four new chapters addressing hot issues in IDT including ethics, diversity, accountability, the nature of the design process, and the appropriate amount of learner guidance that should be built into instruction; coverage of What IDT Professionals Do which introduces students to the wide variety of settings in which IDT professionals can practice their craft; a stronger emphasis and new research on how to design, deliver, and evaluate online instruction, with field-tested techniques for instructional design of online learning; and four new and two revised chapters with coverage of technologies that are changing the nature of the IDT field including advances in such areas as e-learning, social networking, game-based learning, and virtual worlds.