The graph shows a bar chart comparing task completion times for blind users and for a control group when using low accessibility and high accessibility web sites. The scores have been set to a baseline of 100 and lower scores are better (i.e. low scores mean people could complete their tasks more quickly). The control group's task completion time was 100 for high accessibility web sites and 146 for low accessibility web sites. Blind users task completion time was 321 for high accessibility web sites and 486 for low accessibility web sites. Data plotted from the DRC's report, Formal Investigation Report: Web Accessibility.

Return to Web accessibility: No More Mr Nice Guy.

David Travis Dr. David Travis (@userfocus) is a User Experience Strategist. He has been working in the field of human factors, usability and user experience since 1989. If you like his articles, you might enjoy his free online user experience course.

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