Put words and pictures together, not apart

Place labels on the diagram, not in a caption your eyes have to hunt for.

Why it works

When related words and images sit far apart, the mind must hold one in memory while searching for the other, spending limited working memory on the search instead of the learning — the split-attention effect. Integrating the text into the diagram lets both channels work on the same point at the same time, which is when dual coding actually compounds.

How to do it

1. Label parts of a diagram directly on the relevant element.
2. Keep explanatory text adjacent to the visual it describes, not on another page.
3. Remove anything that forces the eye to jump back and forth to connect word and image.

Evidence

The split-attention effect is well established in cognitive-load and multimedia-learning research: physically integrating related text and graphics improves learning compared with separating them, because it frees working memory. (rct)

Integration helps when the two sources are mutually dependent; when text and image each stand alone, combining them can instead create redundancy.

Sources

• Sweller, cognitive load theory (split-attention effect)

Common mistake

Building a slick diagram and then explaining it in a separate paragraph or caption, forcing the reader to mentally stitch the two together and wasting the working memory that should go to learning.