Considers the question of whether instructional methods are replaceable or interchangeable. Topics discussed include the influence of external events on learning and cognitive processes, media variables, linking instructional design to research on learning from instruction, construct validity, and an example of adequate instructional design and…

Reviews issues raised in an earlier article that claimed that instructional media do not influence learning achievement or motivation. Topics discussed include differences between media and instructional methods; instructional technology; delivery technology; problems with meta analyses; thinking skills; cognitive processing; and research…