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The fourth level, the lexical level, includes understanding user's mechanisms when structuring their interaction with the computer. A user's interaction with a computer is structured by the person who developed the interface. If the interface does not allow the user to structure their interaction in a user friendly way, the system interaction may not be satisfactory. For example, when looking for information, people often ask questions of other people. Many Web search engines do not allow the user to ask the computer a question in natural human language or conversation style. A classic site that does allow questions is the Ask Jeeves site.
International Ergonomics Association - The IEA is the federation of ergonomics and human factors societies from around the world.
Section 508 - Section 508 requires Federal agencies to make their electronic and information technology accessible to people with disabilities.
W3C Website Accessibility Initiative (WAI) - Website Accessibility Initiative (WAI) pursues accessibility of the web through: technology, guidelines, tools, education and outreach, and research and development.
Bobby - Bobby is free web accessibility software tool designed to test web pages for compliance with current accessibility guidelines.
Effective Color Contrast - This Lighthouse International article gives basic guidelines for the design of web pages that are accessible by people with partial sight and color deficiencies.
Here are some extra links for you to review as we get moving on the course content. Please post a comment with your reaction to one of the linked sites below.
Human-Computer Interaction Resource Network (HCIRN) - HCIRN includes definitions, tutorials, references, and resources.
HCI Bibliography - This HCI resource includes HCI news, definitions, books, guidelines, and history.
Software Usability Research Laboratory (SURL) at Wichita State University - SURL is a division of the HCI Laboratory at Wichita State University.
GroupLab - Laboratory for Human Computer Interaction and Computer Supported Cooperative Work at University of Calgary.
The Gnome Usability Project - Documentation to aid developers in their efforts to design usable applications and interfaces.
