Assistive Technology and Information Technology: Working together to provide access for people with disabilities
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Presentation by Dagmar Amtmann and Jeff Witzel
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UW Center for Technology and Disability Studies
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AccessIT - National Center on Accessible Information Technology on Education
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Web site:
http://www.washington.edu/accessit
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Email:
accessit@u.washington.edu
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People understand and have heard of accessibility
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Have not seen the problem created by inaccessible designs
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Want to give people a taste of what a screen reader user experiences using the Web
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"Surfing the Web with a Screen Reader" DVD
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Available as streaming video on AccessIT site
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Design the video for accessibility
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Segments menu allows going directly to segments
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Put configuration settings in DVD menu so people do not have to know where they are on the device
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Captioning for the hearing impaired - on or off
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Descriptive Video Service - on or off
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Viewing and discussing several segments of the video
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Alternative text in graphics and image maps
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Forms - designing so description is next to the button, checkbox, or field the person will use to make their response
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End result is people getting the information they need
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Responsibility of information technology people to put in support people need
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Success requires a chain of technologies working well together
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We have pretty good guidelines for Web design on what is and what is not accessible
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People who have difficulties reading and writing can be helped by assistive technology
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Specific disabilities like dyslexia
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Some have brain injuries
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People who have difficulty writing often also have difficulty reading
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Such people tend to use integrated packages that give access to both writing and reading tools
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May read very slowly
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Good solution is screen reader software that assumes you can read the screen
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May have difficulty learning complicated interfaces such as JAWS many keyboard commands
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Simpler interface
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Assistive Software
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ReadPlease Plus 2003 ($40) (
http://www.readplease.com/
)
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Reads text files
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Displays text, has moving highlight as text is read
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Free version has robotic voice, $40 version has a selection of more natural voices
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Can adjust speed, select language, adjust display font size
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With a PowerPoint file, save as an outline and then use ReadPlease to read it back
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With PDF files - select text and then copy into ReadPlease
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Does not help with graphics
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How the PDF file is created has a lot to do with whether the text can be copied into ReadPlease
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Different types of files may or may not copy well
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Headers do not appear in the right place
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If text is in image, not way to copy it into a reader
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WordQ (
http://www.wordq.com/
)- allows you to select contents in browser display and have it read
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Includes a word prediction option for use in Word processor. As word is typed in it offers completions. When word it completed it speaks it
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Every word provided is spelled correctly
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Can be used in online quizzes, such as in WebCT, Blackboard, and other learning environments
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Might be used in a Chat required in a course
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Rapid reading and writing in a Chat can be quite challenging for a person with reading and writing disabilities
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Chat tools not the best instructional strategy for courses
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Email lists allow asynchronous discussions, giving people with disabilities more time to prepare messages
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Pages made available as bitmap graphics cannot be scanned with reader software
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Security systems that require passwords entered exactly can be a real challenge
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Passwords do not display and you may not want the reader to pronounce it aloud
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WebQ, a UW Catalyst tool (
http://catalyst.washington.edu/tools/web_q.html
)
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Online surveys or tests used in classes often have a set time
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Individual student cannot extend time
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Person with reading and writing difficulty is really being tested on the speed rather than their knowledge
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It would be nice if individuals could set their own time limits
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WordQ can be used with WebQ
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We are in pretty good shape
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Should work with
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Entry assist
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Voice entry
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WebQ puts graphic descriptions on the page, not just in the alt text
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Discussion
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If the field requires visual abilities, why is it necessary to make information about the field accessible for sightless people?
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People in other fields may need knowledge of the field, such as a person studying botany may need statistics
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Probably fewer such fields than sightless people imagine
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A blind woman is doing graduate study in atmospheric sciences
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If we decide as a society that everyone should know something, we can make the effort to present the topic in accessible ways
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People interested in a field may acquire their disability after they have developed they skills and knowledge in the field
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Inaccessible information locks them out when they still have something to contribute
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Descriptions should take into account the different life experience of a person with disabilities - what you offer should be useful
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Description can be helpful to people without disabilities - the description of a graphic may help a sighted person better understand the graphic
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Different people have different learning styles
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Having more ways of engaging with information is ultimately going to work better for a greater number of people
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How can you know your description will be useful
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Look at purpose of graphic
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For a navigation graphic, say what it does, not what it is
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If you want to show the correct way to put a baby to bed and you have a picture of a baby, a alt text that says "baby on back" is not very helpful. Instead, could say "Placing the baby on its back is safer"
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Kurzweil 3000 (
http://www.kurzweiledu.com/
)
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More expensive reader, but still can be stopped by pages not properly prepared
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