Page 77 - THE DUTCH TALKING TOUCH SCREEN QUESTIONNAIRE

Development of the Dutch Talking Touch Screen Questionnaire
5.5.1.4 Font:
The font should be as large as possible for readers who have visual problems.
5.5.2 Scales
5.5.2.1 Show only relevant items:
Do not add words or metaphors (smileys, thermometer, thumbs up) to the scales.
5.5.2.2 Discrete scales:
The numeric rating scale should contain absolute figures as opposed to an ongoing scale.
5.5.2.3 Use of color:
Coloring numbers (from green for non or not severe to red for severe) would make it easier to find the right answer.
5.5.3 Illustrations and photographs
5.5.3.1 Pictures and icons:
Use pictures and recognizable icons to enhance comprehensibility.
5.5.3.2 Concrete:
Illustrations should be as concrete as possible.
5.5.3.3 Show only relevant attributes:
Do not show irrelevant attributes in foreground or background. The background of the photographs should be white.
5.5.3.4 Consistent:
All illustrations should have the same look. They should all show the same person.
5.5.3.5 Photographs better than illustrations:
If possible, use photographs instead of illustrations.
5.5.4 Structure and lay-out
5.5.4.1 Minimize number of functions:
Minimize the number of functions and buttons.
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