Presents a set of guidelines for the display features and content of information that should be given to the learner in a computer-generated error message. Examples of common errors and suggested message displays are given. (8 references) (CLB)

Presents a list of recommended practices for designing computer-based instruction courseware based on principles derived from learning research. Research-based principles and the corresponding design practices are outlined for the areas of stimulus design, learner responses, feedback, and lesson control. (6 references) (CLB)