HCI at ETHZ - ETH Zurich | Flashcards & Summaries

Lernmaterialien für HCI an der ETHZ - ETH Zurich

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Needfinding interview

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- interviewee speaks 90% of the time
- stays on topic
- is more than data gathering
=> be ready to hear something new and be changed by it
- defers your agenda and immerses yourself
• step into the interviewee’s shoes
• be curious
• have a “beginner mindset”

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Choosing participants for a needfinding interview

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Representative of target users
• May be current users of a similar system
• Might be the non-users – but could be in future
Interview people on both sides of an interaction
• Experts are good for background but are not a substitute for users
• Consider interviewing extreme users

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Common pitfalls of Needfinding interviews

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Suggesting answers:
“How was that decision reached? Was there
a big meeting? Did your boss decide
without you?…”
How to prevent:
• Ask the question
• Stop talking
• Let participants give the answer


Hypothetical questions:
• “What if I designed something that
wasn’t as annoying as your current
thing and instead bounced up and
down. Would that work for you?”
• “What about your friends? What would
they do?”
Instead:
• Ask about events and things that
actually happened/exist
• Focus on getting the user’s own point
of view, not what they think someone
else might do

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How to collect data in Needfinding interviews

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Collect data and share with your team:
• Record if permitted (transcription is helpful)
• Take notes
• Take pictures
• Note down important issues/ideas
• Note down quotes

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When not to use diary studies

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• Study changes behavior
asking people to track their behavior tends to cause them to change their behavior

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When to use diary studies

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• Rare events
some events are rare and cannot be easily observed
• Easily forgotten
people forget that some events even happen
• Actual frequency important
people forget how often they do things (e.g., how many glasses of water did you drink?)

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Retrospective Survey

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Ask about things that have happened in the past using a survey format

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When to use retrospective surveys

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• Critical events that users are likely to remember well
Describe a negative software update experience.
• Recent events that were somewhat memorable
Where did you have dinner last night?
• Rare events that had a large impact and are memorable
How did your partner propose to you?

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When not to use retrospective surveys

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• Hard to remember events
How many times did you cross a road last month?

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Diary Study

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Ask people to record events as they happen

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Artifact Analysis

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Look at “things” people leave around the world to understand a problem

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What is root-cause analysis?

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In the real world, problems need to be discovered
We rush to solving a given problem without questioning
if it is the correct problem to solve.


Instead:
1. Find the right problem (root-cause analysis to find the root problem)
2. Find the right solution to it

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Q:

Needfinding interview

A:

- interviewee speaks 90% of the time
- stays on topic
- is more than data gathering
=> be ready to hear something new and be changed by it
- defers your agenda and immerses yourself
• step into the interviewee’s shoes
• be curious
• have a “beginner mindset”

Q:

Choosing participants for a needfinding interview

A:

Representative of target users
• May be current users of a similar system
• Might be the non-users – but could be in future
Interview people on both sides of an interaction
• Experts are good for background but are not a substitute for users
• Consider interviewing extreme users

Q:

Common pitfalls of Needfinding interviews

A:

Suggesting answers:
“How was that decision reached? Was there
a big meeting? Did your boss decide
without you?…”
How to prevent:
• Ask the question
• Stop talking
• Let participants give the answer


Hypothetical questions:
• “What if I designed something that
wasn’t as annoying as your current
thing and instead bounced up and
down. Would that work for you?”
• “What about your friends? What would
they do?”
Instead:
• Ask about events and things that
actually happened/exist
• Focus on getting the user’s own point
of view, not what they think someone
else might do

Q:

How to collect data in Needfinding interviews

A:

Collect data and share with your team:
• Record if permitted (transcription is helpful)
• Take notes
• Take pictures
• Note down important issues/ideas
• Note down quotes

Q:

When not to use diary studies

A:

• Study changes behavior
asking people to track their behavior tends to cause them to change their behavior

Mehr Karteikarten anzeigen
Q:

When to use diary studies

A:

• Rare events
some events are rare and cannot be easily observed
• Easily forgotten
people forget that some events even happen
• Actual frequency important
people forget how often they do things (e.g., how many glasses of water did you drink?)

Q:

Retrospective Survey

A:

Ask about things that have happened in the past using a survey format

Q:

When to use retrospective surveys

A:

• Critical events that users are likely to remember well
Describe a negative software update experience.
• Recent events that were somewhat memorable
Where did you have dinner last night?
• Rare events that had a large impact and are memorable
How did your partner propose to you?

Q:

When not to use retrospective surveys

A:

• Hard to remember events
How many times did you cross a road last month?

Q:

Diary Study

A:

Ask people to record events as they happen

Q:

Artifact Analysis

A:

Look at “things” people leave around the world to understand a problem

Q:

What is root-cause analysis?

A:

In the real world, problems need to be discovered
We rush to solving a given problem without questioning
if it is the correct problem to solve.


Instead:
1. Find the right problem (root-cause analysis to find the root problem)
2. Find the right solution to it

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