The purpose of this study was threefold: to determine whether adding a mnemonic to systematically designed instruction would improve verbal retention, to establish whether retention is better for concrete or abstract information, and to determine whether mental imagery or verbal elaboration is more effective for learning concrete or abstract…

The effects of visual, and verbal/visual, preorganizers and postorganizers on the learning of unfamiliar information were evaluated in an experimental study involving 153 community college students. Pre- and postorganizers were used in connection with a 20-minute lesson on the theory of communication. A 25-item, multiple-choice criterion test was…