Case Studies & Interviews
What are the four characteristics of a case study?
In-depth, contextual, multiple data sources, qualitative emphasis
What is a benefit of using focus groups?
They elicit diverse viewpoints and discussion.
What is formative testing?
Early testing with low-fidelity prototypes to improve design
What does a one-way ANOVA test?
The effect of one IV with multiple levels on a DV
What does IRB stand for?
What does IRB stand for?
What is pattern matching in case study analysis?
What is pattern matching in case study analysis?
What is a drawback of focus groups?
They are hard to manage and interpret.
What is summative testing?
Later-stage evaluation of design effectiveness
What is the null hypothesis in an ANOVA?
There is no difference among the group means
What are the three ethical principles in the Common Rule?
Respect for persons, beneficence, and justice
Name one advantage of interviews over surveys.
They allow for deeper exploration and follow-ups.
Why should focus group facilitators prompt quiet participants?
To ensure everyone's input is heard
What is validation testing?
Comparing performance to benchmarks or standards
What does F(2,28)=5.702, p<0.01 indicate?
Significant difference among groups
What is informed consent?
Participants understand the study and voluntarily agree to participate
What distinguishes semi-structured from fully structured interviews?
Semi-structured allows flexibility and probing.
What kind of questions are best for focus groups?
Open-ended and exploratory questions
What’s one benefit of heuristic evaluations?
They quickly identify design issues without users
When do you use repeated measures ANOVA?
When each participant experiences all conditions
Why is coercion a concern in recruitment?
It can undermine voluntary participation
What type of data are most often collected in case studies?
Qualitative data
What is a major challenge in analyzing focus group data?
Dealing with group dynamics and overlapping dialogue
What type of user-based testing generates performance metrics with little moderator interference?
Summative testing
What does it mean when the interaction effect is not significant?
The combined impact of IVs is not different from their individual effects.
Why must HCI researchers sometimes educate IRBs?
IRBs may be unfamiliar with non-traditional HCI methods