The development of a single value revision indicator which would utilize learner performance data obtained from a pretest-posttest design to rank a set of instructional modules as to their relative need for revision is discussed. A set of procedures was developed in connection with the implementation of the Production, Implementation, Evaluation,…

When two groups, initially dissimilar, undergo different treatments, can subsequent differences be partitioned in such a way that the difference between the two treatments is unbiased? This is the central problem of this paper, and it is confronted by the examination of two levels of information using a Follow Through Evaluation. The first…