1. Methodology for Accessibility Testing User Interface Design summer semester 2003/04 Tomas Zanka Czech Technical University in Prague Czech Republic

2. User Interface Design summer semester 2003/04 Content 1.information validity information validityinformation validity 2.result from real testing: I did cognitive walkthrough result from real testing: I did cognitive walkthroughresult from real testing: I did cognitive walkthrough 3.basics of cognitive walkthrough basics of cognitive walkthroughbasics of cognitive walkthrough 4.doing the tests doing the testsdoing the tests 5.practical notes practical notespractical notes 6.more information more informationmore information

3. User Interface Design summer semester 2003/04 Information validity This document is based on experiences with following applications: NetBeans 3.5.1 NetBeans 3.5.1 Java SDK 1.4.2_03 Java SDK 1.4.2_03 Java Access Bridge 1.1_GA Java Access Bridge 1.1_GA JAWS 5.0 JAWS 5.0 all running on Windows 2000 all running on Windows 2000

4. User Interface Design summer semester 2003/04 Results from real testing I started intuitively with the testing. I started intuitively with the testing. While making work more and more systematical, I intuitively ended with small modification of cognitive walkthrough. While making work more and more systematical, I intuitively ended with small modification of cognitive walkthrough. Cognitive walkthrough is methodology for testing user interfaces in general. Cognitive walkthrough is methodology for testing user interfaces in general.

5. User Interface Design summer semester 2003/04 Basics of cognitive walkthrough 4 prerequisities: 4 prerequisities: –system prototype or precise description –detailed user profile –list of tasks to be done by the user in the system –detailed list of actions for each task 4 verification questions asked on each step: 4 verification questions asked on each step: –Chooses user correct goal? –Is the action he should choose heard? –Is the chosen action the right one? –Understands user to feedback provided by the action?

6. User Interface Design summer semester 2003/04 Doing the tests detail action lists act here as checklists – can/cannot be done by blinds (+ why, limitations) (marking problem points is enough) detail action lists act here as checklists – can/cannot be done by blinds (+ why, limitations) (marking problem points is enough) using display is desirable, but ONLY to: using display is desirable, but ONLY to: –check completeness of aural information (eg. disabled menu items are not read) –check consistency of visual & aural information (eg. code completion window appears, but blind user does not know about it) –bypass discovered problems and continue in testing (something cannot be done by keyboard, but further steps are clear)

7. User Interface Design summer semester 2003/04 Practical notes tester must maintain great selfcontrol and keep track of which information blind user (can) have tester must maintain great selfcontrol and keep track of which information blind user (can) have start with default configuration, alter it as a blind start with default configuration, alter it as a blind work slowly and precisely - hurry leads to errors work slowly and precisely - hurry leads to errors try to use help as a blind when in trouble (may be you will discover problems with help, like I did) try to use help as a blind when in trouble (may be you will discover problems with help, like I did) analyse cause of problems (eg. it’s application/system-wide or local problem) analyse cause of problems (eg. it’s application/system-wide or local problem)

8. User Interface Design summer semester 2003/04 More information my work: http://taz.mystik.cz/Skola/NUR/ (URL is case sensitive; index is in czech, but most linked pages are in english) my work: http://taz.mystik.cz/Skola/NUR/ (URL is case sensitive; index is in czech, but most linked pages are in english) http://taz.mystik.cz/Skola/NUR/ information on cognitive walkthrough: http://www.google.com/search?q=cognitive+walkthrough information on cognitive walkthrough: http://www.google.com/search?q=cognitive+walkthrough http://www.google.com/search?q=cognitive+walkthrough