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Usability Testing

Usability Testing. Making Sure Documents Work. Why Test? Expense of documentation Reasons for documentation Customer Satisfaction Reduced Support. Why Not Test? Limited time Documentation & Product near completion simultaneously Limited access to users. Testing Realities.

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Usability Testing

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  1. Usability Testing Making Sure Documents Work

  2. Why Test? Expense of documentation Reasons for documentation Customer Satisfaction Reduced Support Why Not Test? Limited time Documentation & Product near completion simultaneously Limited access to users Testing Realities Solution: Do the best you have with what you’ve got!

  3. Test Plan: Decide When • Design Phase • Test checks appropriateness of contents & structure • Results are predictive • Draft Phase • Test checks effectiveness • Results are remedial • Release Phase • Test checks effectiveness & locates problems • Results are evaluative/revisionary

  4. Task-Based Testing High Chance of Failure Complex Unique Abstract/Technical High Cost of Failure Support Damage Performance Language Testing Terms or Tone Novices Language Gaps Conceptual Info Understandabilty Design Testing Locating & accessing information Read & Locate Test Plan: Decide What & How

  5. Test Plan: Create Test • Design specific scenarios to match test objectives • Perform one or more tasks • Answer one or more conceptual questions • Locate one or more sections

  6. Test Plan: Set Objectives • Time-related • How long does it take • Accuracy-related • How many errors (perform) • How many “reads” required (understand) • How many “tries” required (find) Objectives are not mutually exclusive

  7. Testers Self Other writers Designers At least 2 is best Evaluators (Testees) Actual Users (ideal) Experience Level Subject Matter Know. Similar Users Explain uses Provide scenarios “Random” Users Explain roles Explain uses Provide scenarios Test Plan: Decide Who

  8. Test Plan: Decide Where • “Artificial” Environment • Can be either simple or elaborate • Provides high degree of control • Allows for better equipment • Costs more • Actual Environment – Field Tests • Provides “real life” picture • Subject to interruptions

  9. Evaluator survey Key characteristics Permission General instructions Testers Evaluators Schedule Lab procedures Field tests: equipment Pilot tests Overviews Test forms Scenarios for each task Documentation being tested Results forms Charts/Tables + Comments Exit Surveys Test Plan: Prepare Forms

  10. Test Plan: Gather Equipment • Tape Recorder • Notebooks/Forms & Pens • Camera • Timer/stopwatch • Required test materials (e.g. computer & software)

  11. Test Plan: Record Information • Testers’ observations • Include everything during test • Filter later during interpretation phase • Evaluators’ “talk aloud” • Timing data

  12. Test Plan: Interpret and Apply Results • Review observations, tapes, and timing information • Filter out “biases” or other variables • Make appropriate changes to the documentation

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