A sequential testing model is proposed which employs discriminant functions to classify examinees into groups which could correspond to instructional treatments. A termination rule based on the computed posterior probability of group membership is suggested. (Author)

Presents a series of six prescriptions for constructing an authoring system that guides the instructional design process used to create computer-based lessons. The importance of providing opportunities for dynamic interaction between the program and the student is emphasized. (Author/LRW)