A study was undertaken to test the assumption that students will interact with illustrations in textbooks, workbooks, and programed units; and that this interaction will facilitate learning. Eight test groups were compared with a group that had only verbal symbols to learn from. These groups had, in addition to the verbal descriptions, the black…

Whether additional cues in visualized materials add to their instructional value is a question answered differently by various educational theorists. In the eight studies reviewed, experiments were designed to answer this question and other questions related to it. In three media studies using the same four treatments (oral presentation without…