Appendix 5: Assessment of Web Pages
Evaluation of web sites includes both objective and subjective methods. Best practices dictate
discriminating and setting appropriate expectations for each. Objective criteria include any that can be
explicitly identified and decided upon with a reasonable degree of certainty. Subjective criteria include
user testing where no specific results of testing are expected, but evaluation is done through the eyes
of a representative or affiliated user.
Many resources for criteria of objective evaluations already exist. Technical evaluations include
functional, security, performance, scalability and compatibility tests. Software tools are available to
automate technical evaluation. Usability evaluations include language, layout, graphics, information
architecture and user interface reviews. These evaluations cover ADA accessibility requirements, the
W3C's accessibility guidelines, and various design usability criteria. Evaluation criteria should be
decided in advance, and pages scored based on compliance. These criteria can be separated into
hazard and improvement issues. Hazard issues involve those that present a serious usability
constraint for the user and require fixing. Improvement criteria include those that would improve the
overall user experience, but do not adversely hinder accessibility.
Subjective evaluations provide necessary insights into website use. Testing validates and provides
needed feedback on many web design issues. Testing throughout the design and deployment phases
of site development provides a needed outside perspective a fresh perspective of the user
experiencing the site for the first time. It also improves the judgment of web developers, as their
understanding of users broadens, and resolves religious debates about design issues.
Resources for objective usability evaluation criteria:
Department of Justice ADA homepage
http://www.usdoj.gov/crt/ada/adahom1.htm
W3C Web Accessibility Guidelines
http://www.w3.org/WAI/
and
http://www.usability.gov/
Objective Evaluation of Usability Hazards
http://www.abeleto.com/resources/articles/objective.html
Bobby Site Inspection Tool to test ADA compliance
http://bobby.cast.org/
Inspection Methods Resources
http://usableweb.com/topics/000606 0 0.html
Quality Web Systems book
http://www.qualitywebsys.com/
Resources for subjective user testing:
Conducting Usability Tests
http://usability.gov/methods/usability_testing.html
User Testing Resources
http://usableweb.com/topics/000878 0 0.html
Don't Make Me Think book
http://www.sensible.com/
Discount Usability for the Web
http://www.useit.com/papers/guerrilla_hci.html
_________________________________________________________________________________
Web Services Committee
Page 23
May 28, 2002
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