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Usability Testing

Usability Testing

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Usability Testing

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  1. Usability Testing Online @ RMIT Usability Test Lab

  2. An interview with Jason Snell as he sets up the Usability Test Lab…

  3. What (minimum) equipment do you need to formally test a web site? • Computer with Internet access • Person to monitor the test participant: • where they went, • what they clicked, • how long did it take… • A task, or list of tasks for the test participant to perform • Video camera (optimum: 2 cameras) to capture: • Participant’s face • Computer screen

  4. How do you devise the task/s? • Use the test plan (from Requirements / Specifications) • Map out what you consider a perfect step-by-step method of completing the task (like a recipe) • The task list for participants does not specify perfect way to complete the task

  5. Why videotape the session? • Documentation for other members of the development team • If something goes wrong, the test participant will have some reaction on face and on screen • Debriefing (end of session): • Tester & monitor review session (run through video) • Stop video at interesting points to discuss: • Reasons participant performed the task the way they did • What participant would like to happen

  6. Layout of the room

  7. PC is connected to notebook. Notebook displays whatever happens on the participant’s PC

  8. Video camera set to record notebook screen and participant at PC (ideal setup would have 2 cameras)

  9. The TV shows the video camera recording… tester & test participant review this at the end of the session

  10. How many people do you test? • 5 people provide sufficient test results and feedback (Jakob Nielsen) • For Online @ RMIT • Group 1 (establishing benchmarks): • 5 novice users • 5 more experienced users • Group 2: • 5 novice users after induction

  11. How do you measure usability? • The product is usable if participants performed most of the tasks • Benchmarking (Group 1): • Quantitative: n% testers took x minutes to perform task 2 • Qualitative: comments/discussion, e.g., if everyone had problem with a task, to highlight design flaws. Or positive feedback.

  12. What happens with the results? • Results are tabled as a report (to development team) • Feeds back into the design process

  13. Given your background in electrical engineering testing, what do you think about the rising “popularity” of usability testing? • A combination of factors: • 5 years ago • people with access to technology tended to be experts • “scientists” expected to fiddle with technology and read manuals • Now • Rapid advances in technology mean less time to fiddle • All types of users – novice to expert • No time to spare, no desire to learn • Increased competition for saleable, usable products