Usability testing and expert review Flashcards
(9 cards)
What is a formative study?
Small study, few participants, present in the early part of the development process, helps to form the product, typically you run several formative studies before the summative study
What is a summative study?
The big exam of the product, typically at the end of the development process, a lot of participants, very expensive, if the product fails the test, you take the product back to the early development phases
What are two approaches in the moderated usability test
Think aloud protocol (obs. this approach can interfere with how people naturally perform the task)
Retrospective think aloud (obs. there is a risk that the user forgets the thoughts they had during the task but with this approach you minimise the risk of interfering with the actual task, sometimes you record the session and that might lead to recall of thoughts for the user when watching the recording)
What is inquiring with intent?
Follow-up questions. Observation during task followed by an interview. Start by asking very broad questions.
What are knowledge-driven tasks?
Things that you cannot test in the usability testing setting, we have to rely on the users knowledge to find out, e.g. test how users store their EpiPen where you would ask them where they would store it.
What is PCA analysis?
Perception-cognition-action analysis
When users make an error when using the product, we want to determine why they made that error. We look at the steps within perceptual, cognitive or action steps.
Perception: Intended user perception in sub-action. What they should see/hear. E.g. can you see the button on the kettle?
Cognition: What the user should know/understand/remember to be able to complete the task. E.g. do you know that the button is an on-button?
Action: What the user should do to complete the task. E.g. cannot reach/press the button.
What is the say-do discrepancy and what effects might be influencing?
Discrepancy between what you observe and what the user reports.
Demand effects: The user would like to make the moderator happy.
Social desirability: The user would like to be perceived in a specific way by saying that the product is easy to use.
The user can’t remember what happened.
The user thinks he/she is doing the right thing.
What are the steps in the UX review?
- Preparations: focus points, timeframe, constraints
- Informal review: casually browsing through the website, one flow
- Formal review: root-cause analysis and design solutions
- Report writing
What are the four levels of cognition?
- Basic cognitive functions (what do the users see and not see, hear and feel)
- Skills (learned, what does the user already know, mental models, external and internal standards)
- Rules (rule based behaviour)
- Knowledge (analytical IQ, how can you remove, optimise, simplify, be consistent)
