Importance of visual aids

Visual aids are charts, tables, graphs, diagrams, photographs, models, slides and videos that present information to the eye. In technical communication, where data and processes are complex, they are very important.

Importance

1. Simplify complex information: a diagram or flow chart explains a process that would need paragraphs of text.
2. Save time and space: a table or graph shows large amounts of data in a compact form.
3. Improve understanding and memory: people remember much more of what they see and hear together than of what they only hear.
4. Show trends and comparisons quickly: line graphs, bar graphs and pie charts make patterns and proportions obvious.
5. Attract and hold attention: colour, images and layout make a report or presentation interesting.
6. Reduce misunderstanding: drawings and photographs are less ambiguous than words, especially for dimensions, parts and procedures.
7. Cross language barriers: symbols and pictures can be understood by people of different languages and backgrounds.
8. Add credibility and professionalism: well-made visuals show that the writer has analysed the data carefully.
9. Support the speaker: in presentations, they keep the talk organised and give the speaker confidence.

Guidelines for use

Visual aids should be simple, clearly labelled, numbered, properly titled and placed close to the related text. Too many or cluttered visuals should be avoided.