Abstract
Computer-assisted instruction has many widely-recognized benefits, such as reduced learning time, higher final exam scores, improved attitude, and better individualization. Detriments have been an inadequate theoretical focus, poorly conceived and reported studies, high cost, and machine-dependent, inflexible authoring languages. The microcomputer has mitigated some of these problems, and recent Macintosh authoring languages have been flexible and powerful enough to prompt much recent courseware development. A survey of the major authoring languages is presented, with an overview of projects currently in work.
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