Mobile App Design Research & Evidence-Based Practice 2

Question 1

Which research method is best suited for understanding the emotional journey a user experiences when completing a complex task in a mobile app?

Accepted Answer

Experience sampling method

Answer

Experience sampling method captures in-the-moment emotional states and experiences as users complete tasks in their natural context.

Question 2

A mobile app team wants to validate that their navigation redesign reduces task completion time. Which metric should be the PRIMARY outcome measure?

Accepted Answer

Time on task

Answer

Time on task directly measures how quickly users can complete specific tasks, making it the primary metric for evaluating navigation efficiency.

Question 3

What does a high 'rage tap' rate on a mobile element typically indicate in analytics data?

Accepted Answer

Users expect the element to be interactive but it is not responding

Answer

Rage taps — repeated rapid taps — indicate user frustration when an element appears tappable but fails to respond or respond quickly enough.

Question 4

In a moderated usability test for a mobile app, when should a facilitator intervene during a participant's session?

Accepted Answer

Only when the participant is in genuine distress or asks a direct question about the task

Answer

Facilitators should intervene minimally — only for safety, genuine distress, or direct questions — to avoid biasing participant behavior and preserve ecological validity.

Question 5

Which statistical concept explains why running 20 A/B tests simultaneously increases the likelihood of finding a 'significant' result by chance?

Accepted Answer

Multiple comparisons problem

Answer

The multiple comparisons problem (or p-hacking) means that running many simultaneous tests inflates the false positive rate well beyond the nominal significance level.

Mobile App Design Practice Test

Mobile App Design Practice Test

Mobile App Design Research & Evidence-Based Practice 2