Disputes about the impact of instructional guidance during teaching have been ongoing for more than a half century. On one side of this argument are those who believe that all people--novices and experts alike--learn best when provided with instruction that contains unguided or partly guided segments. On the other side are those who believe that…

A review of computer assisted instruction research and recent meta-analytical reports suggests that all research on the learning benefits of the instructional uses of computers should be halted until there is a plausible reason to expect that computers are instrumental in learning, since all existing evidence indicates that computers do not yield…

In the first of four symposium papers, Clark reviews the research on learning from media and uses his argument that media comparison studies show no differences in learning attributable to any one medium over another to dispute recent research on computer-assisted instruction. He also takes the position that the media attribute argument (i.e.,…

The suspected sources of confounding in current meta-analytic studies of computer based instruction (CBI) are uncontrolled effects of instructional method and/or the John Henry Effect (i.e., compensatory rivalry). To determine which confounding is most plausible, a random 30% sample of the 128 studies which formed the original Kulik meta-analyses…