Term
| Relationship of Engineering and Science in HCI |
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Definition
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Term
| What kind of usability tests are there? |
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Definition
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Term
| What are the export-based usability tests? Explain them |
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Definition
Heuristic evaluation: Given a set of heuristics (rules), experts compare the rules with the UI
Cognitive walkthrough: Given a set of task sequences -> Experts walkthrough the task and identify usability issues based on his/her knowledge |
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Term
| What is the automated usability test? |
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Definition
| computer tests the UI against a set of quantifiable rules |
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Term
| When is a user-based usability test applied? |
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Definition
- Explore early design concepts
- Discover real problems
- Usually get qualitative results |
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Term
| What are two techniques of user-based usability tests? Explain what their goal is. |
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Definition
Think-aloud technique: goal: learn about users mental model and how it changes throughout the course of interaction
Wizard-of-Oz technique: goal: Assessing interactions for technologically sophisticated product before implementing it. |
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Term
| What are the three sub techniques of the think-aloud technique? What are their problems? |
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Definition
Think aloud: Ask user to say what he thinks out loud during the interactions. Problem: May be unnatural and slow
Retrospective think-aloud: Videotape the (silent) interactions and ask users to think-aloud during the replay. Problem: imperfect reconstruction of the memory
Constructive interaction: One experienced user teaches a new user to the system. Problem: social dynamics might distort the results. |
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Term
| What are knowledge types? |
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Definition
1. Descriptive: accurate description of what is happening
2. Relational: identify relations between multiple variables
3. Causative: identify causes of a situation or a set of events |
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Term
| What's the goal of a diary research method? |
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Definition
| Learn about users observation, feeling, thoughts over time |
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Term
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Definition
Elicitation: Using the diary itself as data
Feedback: Using the diary to guide a follow-up interview |
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Term
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Definition
Get a snapshot description of a large number of people at a particular time
pro: scalable
contra: shallow knowledge |
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Term
| Draw the strategy circumplex |
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Definition
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Term
| What are survey components: |
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Definition
- Questionnaire
- Sampling strategy
- Administering method
- Data analysis |
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Term
| What question types in questionnaire are possible? What are advantages / disadvantages? |
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Definition
open ended:
+ allow responses to be flexible
- hard to analyze
- lower response rate
close-ended
+ easier for respondents
+ easier to analyze
- question limits the potential |
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Term
| What are problems in the likert scale? |
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Definition
- tendency to avoid extremes
- tendency to answer the same for all |
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Term
| What kind of sampling methods are there? |
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Definition
- Convenient
- Snowball
- Self-selected |
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Term
| What administering methods exist? |
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Definition
- in person (costly, flexible, risk of bias from the interviewer=
- electronic (lower response rate, faster) |
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