| Deliverable
| Question
| Usability Test
|
| Proposal |
Does concept appear good to the users? |
If simple concept: phone questionnaire |
| If complex concept: group focus session |
| If private issues are important: one-to-one interviews |
| List of Functions |
Group focus session |
Group focus session |
| Which function can be left out, or deferred? |
Questionnaire on value of functions |
| Task Design |
Is planned workflow practical? |
Mock-up walkthrough |
| Group focus sessions |
| Are there steps missing or improvements needed? |
Group focus sessions or on-the-wall method |
| High-Level User Interface Structure & Visual Metaphor |
Is it obvious what the system does? |
Protocol simulation Describe the system and each object |
| Can users find the functions? |
Protocol simulation For each function, where would you find it? |
| Can users learn the structure easily? |
Protocol simulation Teach back |
| Selection of an Alternative Design |
Which of these design ideas is best? |
Contrast experiment |
| Design of Specific Icons & Words |
Do these communicate effectively? |
Matching questionnaire |
| Screen Design Prototype |
Are there places where users get stuck, confused, or make errors? |
Protocol simulation trial |
| Which function can be left out, or deferred? |
Questionnaire on value of functions |
| Help, Job Aids, Cue Cards, Wizards & Documentation |
Are there places where users get stuck, confused, or make errors? |
Protocol simulation trial |
| Final Deliverable Application |
Does concept appear good to the users? |
Protocol simulation trial |
| Is our application better that the competitions’? |
Contrast experiment |
| Does it meet its human performance objectives? |
Formal usability test |
| Does it work in the real world? |
Field trial |
Go to...User Experience for a Better World 
