The model described, which views the learner as a resource-limited system that has to transform instructional information, includes six factors for expected success. Although based on microscopic psychological theories, it can be applied at more macroscopic levels of analysis by increasing the size of instructional units. Five references are…

Presents the concept of a work model which is a unit of practice within a computer based instructional system allowing replication of both information and interaction. The model also addresses some of the fundamental problems with objectives, e.g., richness of terminal behavior and relation to content. Ten references are listed. (CHC)