Interactive video, a combination of computer-assisted instruction and video technology, is an important new development in instructional media. Because interactive video has its roots in individualized instruction, it is particulary useful in personalizing instruction by allowing students to proceed at their own pace (one of the tenets of programmed instruction) and to receive immediate feedback (an advantage made possible by the advent of computer-assisted instruction). Two main types of video technology are available: videotapes and videodiscs. Despite their higher cost, videodiscs overcome many of the drawbacks of videotapes, including slow access time, poor freeze-frame characteristics, and costly maintenance. Because video technology is fairly new, few programs are available. For this reason, teachers and trainers desiring to develop interactive video instructional materials will require training in the five-step process of instructional systems design (ISD): analysis, design, development, implementation, and evaluation. A research project conducted at the Ontario Institute for Studies in Education illustrated the successful use of ISD in developing interactive video materials to train machine lathe operators. Other examples of interactive video in training include those produced and used by General Motors, IBM, and the American Heart Association. (MN)