Experimenters analyzed a prose passage into 350 idea units, then interspersed throughout the text pictures depicting main ideas, or both main ideas and nonessential details. For fourth- and sixth-grade subjects, pictures did facilitate both immediate and delayed recall, but only of main ideas. (Author/JEG)

Consistent learning gains are associated with the use of pictures when experiments adhere to five ground rules: (1) prose passages are presented orally; (2) the subjects are children; (3) the passages are fictional narratives; (4) the pictures overlap the story content; and (5) learning is demonstrated by factual recall. (Author)