Is Likert scale quantitative or qualitative?
quantitative
Is SUS inspective or retrospective?
-> retrospective, because we cannot perform the task at the same time as perform the questionnaire
Is Think Aloud inspective or retrospective?
Insepctive
Sind physiologische Messungen besser als "Secondary Task" Messungen bezüglich Aussagestärke?
- Ja
- Nein
- Kommt drauf an
-> it depends which secondary task you are taking, (no is also correct)
Bietet ESM quantiatives oder qualitatives feedback?
-> beides, kann für beides benutzt werden
Is there a fixed number of participants that you need for any study?
Of course no! completely depends on what you are doing
30 studies with 3 is better than 1 time hundred (jakob nielsen)
Heuristic Evaluation: is Cognitive Walk through?
- Inspective?
- Retrospective?
-> Inspective, you do it (questions, answers) while seeing the interface
Types of Attention: You sit in the library and stay concentrated despite all the chatter around you. What is it?
- Focused Attention
- Selective Attention
- Divided Attention
-> depends a bit on context, exam there will be a picture or explanation
Confusion Matrix: A signal should be detected always correct, and not refused. It is accetable that also noise is accepted. What value schould be (close to) 1
-> Recall, Sensitivity, you always opt for detection and ignore false alarms
-> Recognition faster than recall
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