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Accessible but not usable?: a look beyond design guidelines Jane Berliss-Vincent, A.M.L.S. Usability/Accessibility Manager Center for Accessible Technology.

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Presentation on theme: "Accessible but not usable?: a look beyond design guidelines Jane Berliss-Vincent, A.M.L.S. Usability/Accessibility Manager Center for Accessible Technology."— Presentation transcript:

1 Accessible but not usable?: a look beyond design guidelines Jane Berliss-Vincent, A.M.L.S. Usability/Accessibility Manager Center for Accessible Technology Berkeley, CA

2 Definitions

3 Defining disability Legal Functional Cultural Environmental Situational

4 Defining accessibility Section 508: technology is accessible if it can be used as effectively by people with disabilities as by those without. WCAG 2.0: perceivable, operable, understandable, robust

5 Defining usability Nielsen’s five attributes: learnability, efficiency, memorability, errors, satisfaction

6 Conflicts

7 Misperceptions Example: Blind people can’t use a keyboard

8 Meeting accessibility letter but not spirit Example: ALT attributes Reliability/usefulness of automated checkers

9 Product changes Example: MS Office 2007 — “mystic” changes Can affect compatibility with assistive technology

10 Dueling functions Example: Simultaneous audio outputs

11 Dueling disabilities Example: Color contrast False dueling Example: use of graphics

12 Design factor balance Example: Copier Example: HTML and browser compatibility

13 Satisfaction Will users WANT to use accessible product? Differences among user experiences: disability, technology, even personality

14 Strategies

15 Understanding Understanding how people with disabilities—all definitions—use technology Understanding access barriers Understanding how assistive technology addresses some of these barriers

16 Flexibility Flexibility within product Flexibility via product environment Flexibility via product competition

17 Awareness and evolution of guidelines Sample guidelines WCAG / Section 508 § 1194.22 Section 255 Other WAI guidelines Other parts of Section 508 International variations Guideline revision

18 Testing Direct testing Oblique testing

19 Bibliography Available at www.janevincent.com/wud/wud2008bib.ht ml www.janevincent.com/wud/wud2008bib.ht ml


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