Reconstructing media research so that generalizable knowledge can be produced requires an increased emphasis on attributes of media which interact with individual differences to effect learning. In order to accomplish this, media researchers must make a distinction between research "with" media and research "on" media. Privious efforts to…

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…