On the testability of WCAG 2.0 for beginners<br />Fernando Alonso, José Luis Fuertes, Ángel Lucas González, Loïc Martínez<...
Contents<br />On the testability of WCAG 2.0 for beginners<br />
Introduction<br />On the testability of WCAG 2.0 for beginners<br />Access to ICT is key in <br />providing access to <br ...
On the testability of WCAG 2.0 for beginners<br />WCAG 2.0<br />
Testability in WCAG 2.0<br />On the testability of WCAG 2.0 for beginners<br />
Factors related to testability<br />On the testability of WCAG 2.0 for beginners<br />
Thecontextfortheexperiment<br />On the testability of WCAG 2.0 for beginners<br />
The web page<br />On the testability of WCAG 2.0 for beginners<br />
Theexperiment<br />On the testability of WCAG 2.0 for beginners<br />
Results<br />On the testability of WCAG 2.0 for beginners<br />The majority of students gave an incorrect response in 9 su...
Results: reliability<br />On the testability of WCAG 2.0 for beginners<br />13 success criteria are not reliably evaluated...
Results: insufficientmajority (<64%)<br />On the testability of WCAG 2.0 for beginners<br />
Results: wrongmajority<br />On the testability of WCAG 2.0 for beginners<br />
Results: wrongmajority<br />On the testability of WCAG 2.0 for beginners<br />
Results: reasonsforlack of reliability<br />On the testability of WCAG 2.0 for beginners<br />
Discussion: Brajnik’s experiment<br />On the testability of WCAG 2.0 for beginners<br />
Discussion: percentage of agreement<br />On the testability of WCAG 2.0 for beginners<br />5 success criteria particularly...
Conclusions<br />On the testability of WCAG 2.0 for beginners<br />
Recommendations<br />On the testability of WCAG 2.0 for beginners<br />
Future work: more experiments<br />On the testability of WCAG 2.0 for beginners<br />
Loïc Martínez-Normand (loic@fi.upm.es)<br />W4A<br />2010<br />7th International Cross-Disciplinary <br />Conference on We...
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WCAG 2.0 Testability for Beginners - W4A - Martinez

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Web accessibility for people with disabilities is a highly visible
area of research in the field of ICT accessibility, including many
policy activities across many countries. The commonly accepted
guidelines for web accessibility (WCAG 1.0) were published in
1999 and have been extensively used by designers, evaluators and
legislators. W3C-WAI published a new version of these guidelines
(WCAG 2.0) in December 2008. One of the main goals of WCAG
2.0 was testability, that is, WCAG 2.0 should be either machine
testable or reliably human testable. In this paper we present an
educational experiment performed during an intensive web
accessibility course. The goal of the experiment was to assess the
testability of the 25 level-A success criteria of WCAG 2.0 by
beginners. To do this, the students had to manually evaluate the
accessibility of the same web page. The result was that only eight
success criteria could be considered to be reliably human testable
when evaluators were beginners. We also compare our experiment
with a similar study published recently. Our work is not a
conclusive experiment, but it does suggest some parts of WCAG
2.0 to which special attention should be paid when training
accessibility evaluators

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WCAG 2.0 Testability for Beginners - W4A - Martinez

  1. 1. On the testability of WCAG 2.0 for beginners<br />Fernando Alonso, José Luis Fuertes, Ángel Lucas González, Loïc Martínez<br />DLSIIS. Facultad de Informática. Universidad Politécnica de Madrid. Spain<br />W4A<br />2010<br />7th International Cross-Disciplinary <br />Conference on Web Accessibility<br />
  2. 2. Contents<br />On the testability of WCAG 2.0 for beginners<br />
  3. 3. Introduction<br />On the testability of WCAG 2.0 for beginners<br />Access to ICT is key in <br />providing access to <br />our society<br />Goals<br />Technology-independent & testable<br />Special attention to Web accessibility<br />Experiment on WCAG 2.0 testability for beginners (students in an intensive course)<br />WCAG 1.0 (1999)<br />WCAG 2.0 (2008)<br />
  4. 4. On the testability of WCAG 2.0 for beginners<br />WCAG 2.0<br />
  5. 5. Testability in WCAG 2.0<br />On the testability of WCAG 2.0 for beginners<br />
  6. 6. Factors related to testability<br />On the testability of WCAG 2.0 for beginners<br />
  7. 7. Thecontextfortheexperiment<br />On the testability of WCAG 2.0 for beginners<br />
  8. 8. The web page<br />On the testability of WCAG 2.0 for beginners<br />
  9. 9. Theexperiment<br />On the testability of WCAG 2.0 for beginners<br />
  10. 10. Results<br />On the testability of WCAG 2.0 for beginners<br />The majority of students gave an incorrect response in 9 success criteria!<br />
  11. 11. Results: reliability<br />On the testability of WCAG 2.0 for beginners<br />13 success criteria are not reliably evaluated with a 64% threshold!<br />
  12. 12. Results: insufficientmajority (<64%)<br />On the testability of WCAG 2.0 for beginners<br />
  13. 13. Results: wrongmajority<br />On the testability of WCAG 2.0 for beginners<br />
  14. 14. Results: wrongmajority<br />On the testability of WCAG 2.0 for beginners<br />
  15. 15. Results: reasonsforlack of reliability<br />On the testability of WCAG 2.0 for beginners<br />
  16. 16. Discussion: Brajnik’s experiment<br />On the testability of WCAG 2.0 for beginners<br />
  17. 17. Discussion: percentage of agreement<br />On the testability of WCAG 2.0 for beginners<br />5 success criteria particularly weak in both experiments!<br />
  18. 18. Conclusions<br />On the testability of WCAG 2.0 for beginners<br />
  19. 19. Recommendations<br />On the testability of WCAG 2.0 for beginners<br />
  20. 20. Future work: more experiments<br />On the testability of WCAG 2.0 for beginners<br />
  21. 21. Loïc Martínez-Normand (loic@fi.upm.es)<br />W4A<br />2010<br />7th International Cross-Disciplinary <br />Conference on Web Accessibility<br />Thankyouforlistening!<br />

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