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Enhancing Usability in Design: Key Concepts and Evaluations

This guide summarizes essential principles of usability, emphasizing navigation, simplicity, and user feedback. Instructors like Colleen Bell stress the importance of task-centered design, ensuring users understand what to do, how to do it, and the feedback they should expect. It covers heuristic evaluation methods, cognitive walkthroughs, and emphasizes the need for accessible design. By avoiding jargon and focusing on clarity, designs can be made more effective and user-friendly. Utilize findings from user testing to enhance interface designs.

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Enhancing Usability in Design: Key Concepts and Evaluations

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  1. Usability July 30, 2009

  2. Usability UBC SLAIS - LIBR 535 Summer 2009 | Instructor: Colleen Bell Image credit: http://www.90percentofeverything.com/2006/11/13/bad-usability-is-like-a-leaky-pipe/

  3. Basics • Navigation • “Don’t make me think!” • Consistency • Visual cues • Instruction should be dead • Jargon free • Writing • Chunking • Simplify • Active voice UBC SLAIS - LIBR 535 Summer 2009 | Instructor: Colleen Bell http://www.library.ucla.edu/bruinsuccess/

  4. Task-centred Design At each step, does the user: • know what to do? • know how to do it? • understand the provided feedback? Cognitive Walk-through UBC SLAIS - LIBR 535 Summer 2009 | Instructor: Colleen Bell http://www.usability.gov/methods/process.html

  5. Testing Heuristic evaluation Task testing UBC SLAIS - LIBR 535 Summer 2009 | Instructor: Colleen Bell 1-3 evaluators test user interface design checklist for compliance http://www.usability.gov/methods/test_refine /heuristic.html 5 users can users accomplish critical tasks? identify 80% of the problems inexpensive

  6. Universal Design Accessibility Quick tests UBC SLAIS - LIBR 535 Summer 2009 | Instructor: Colleen Bell Images & audio CSS Color & contrast No flickering Text & button size JAWS Firefox Web Developer Toolbar W3C list (http://www.w3.org/WAI/ER/tools/complete)

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