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The processing of visual characteristics
has a hierarchy. To better understand what variables influence this
visual hierarchy, an eye tracking study was conducted (Faraday, 2000).
The main factors were found to be size, scanning, images, text style,
and position.
This evidence of how a person processes information on a
Web page demonstrates the importance that visual characteristics
have in the accurate delivery and understanding of information.

Visual Hierarchy findings:
(Faraday, 2000)
Size
Larger text dominates
over smaller; and act as successful entry points.
Images must be much larger than text to act as an entry
point. Don’t rely on users looking at images first.
Scanning
Left-right, top-bottom reading order was found for
text & bullets, but not between images, titles or links.
Discontiguous areas of common background color did
not cause sequencing eg subjects did not shift between the
left & bottom regions, even if they share a
background color. Use a contiguous, same colored region if
content is to be related.
Images
If text and images are of similar size then text is
more likely to be an entry point. One caveat here is image
content : logos may not work well. However, also found titles
preferred as entry points over images.
Text style
Text style is secondary to size : normal sized text
rarely acted as entry point, even if bold or a hyperlink.
Use a larger font for important details.
Bold and Hyperlink
text were looked at for longer than normal text. Use text
style to draw out content
Position
The middle / top of the page seems to be dominant ;
the left hand column and bottom are secondary.
Beware that text
at bottom of the screen is rarely seen. Place important content
at the top of the page.
Visual
Hierarchy example: Adobe
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