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From: Rachael Zubal
Date: Fri, Aug 02 2002 8:53AM
Subject: RE: Accessibility Testing questions
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Thanks for adding information about cognitive disability. So often information on accessibility excludes this!

Rachael Zubal-Ruggieri
Center on Human Policy

>>> = EMAIL ADDRESS REMOVED = 08/02/02 11:12AM >>>
I am sorry but I felt the examples of accessibility barriers that people
may encounter on the Web was not enough.
So I have added information I hope it is some how helpful:

Blindness

. Obtaining information via visual representation.

. Using input tools.

. Understand spatial metaphors for navigation.

. Discerning synthesized speech from other sounds.



Color Blindness

. Color that is used as a unique marker to emphasize text on a Web
site.

. Text that inadequately contrasts with background color or
patterns.

. Browsers that do not support user override of authors' style
sheets





Cognitive and Neurological Disabilities

. Lack of options to use alternative devices for information on
Web sites, for instance
lack of alternative text that can be converted to audio to
supplement visuals, or the lack of captions for audio.

. Use of unnecessarily complex language on Web sites

. Lack of graphics on Web sites

. Lack of clear or consistent organization of Web sites

. Distracting visual or audio elements that cannot easily be
turned off

. Lack of clear and consistent organization of Web sites

. Lack of clear or consistent organization of Web sites






Mobility Impairments

. Pressing multiple keys simultaneously.

. Reaching for the keyboard or mouse.

. Performing actions in a specific time frame.

. Performing actions that require precise movements.








Low vision

. Perceiving color, contrast, and depth differences.

. Understanding size-coded information.

. Discriminating between different fonts.

. Locating and/or tracking pointers, cursors, and hot spots.

. Entering information into online forms.






Hearing Disabilities

. Lack of captions or transcripts of audio on the Web.

. Lack of content-related images in pages full of text, which can
slow comprehension for people whose first language may be sign
language
instead of written/spoken language.

. Requirements for voice input on Web site.

. Lack of captions or transcripts.