Unit 3

Question 1

Prototyping

Answer 1

Timeline of prototyping
Functional prototypes comes to the end
Fidelity-the clarity of the task
Scope - horizontal design as a whole prototype one in detail is vertical prototype

Question 2

5 tips for protyping

Answer 2

Keep prototypes easy to change
Make it clear that it's a prototype
Be creative
Evaluate risks
Prototype for feefback

Question 3

Design life cycle

Answer 3

Needfinding
Design alternativres
Prototypin
Evaluation
This cyclically happens
Teh fidelity keeps increase

Question 4

Evaluation

Answer 4

Qualitative
Empirical
Predictive evaluation

Question 5

What to evaluate 5 tips

Answer 5

Efficiency
Accuracy
Learnability- becaoming expert in the task time taken
Memorability- to remember the steps
Satisfaction-relieve of cognitive load

Question 6

Evaluation timeline

Answer 6

The nature of the evaluation changes over time
formative to summative
Qualitative, predictive to empirical
Lab settong- field setting

Question 7

Evaluation Desi gn

Answer 7

Define the task
Define performance measures
Develop experiment
Recruit participants
Do the experiment
Analyse the data
Summarise the data

Question 8

Qualitative evalution

Answer 8

What do unlike dislike
Similar to needfinding
Synchronous and asynchronous
Capture by- note taking(non-intrusive,cheap),recorded(automated ,comprehensive,passive)(intrusive,difficult to analyse) software logging

Question 9

5 tips , qualitative evaluation

Answer 9

Run pilot studies
Focus on feedback
Use questions
Instruct users what to do
Capture satisfaction

Question 10

Empirical evaluation

Answer 10

Formal or numeric
Counting errors- some tangible number
Across subjects
Within subjects - diffrent treatments both
Hypothesis testing- opposite is true(null hypothesis)
Less than 5% difference then not considered

Question 11

Tips for empirical evaluation

Answer 11

Control what u can document what u can't
Limit your variables
Work backwards
Script anlayses in advance
Pay attention to power

Question 12

Predictive evaluation

Answer 12

Preduct theusers actions and results
Goms - heuristics
Simulation based evaluation

Question 13

Cognitive walkthrou

Answer 13

Look and imagine the interface being used by a use

Predicting and noting

Question 14

Evaluating prototypes

Answer 14

Qualitative
Empiricale /quantities
Predictive evaluation

Question 15

Agile life cycle

Answer 15

Dev is cheaper
Importance of the user - user centric design
5 principles
User involvement
Collaboration and culture
Prototypin
Project lifecycle
Project mgmt

Question 16

A/b testing

Answer 16

The beta version is rolled out to some users
Optimily
The best one is selected

Question 17

Tips for mitigating risk

Answer 17

Start more traditional
Focus on small changes
Adopt a parallel track method
Nested cycles
Be careful with consistency

Question 18

Approaches to user centred design

Answer 18

Participatory- one designer is also the user
Action researvh- understanding of the problem
Interactive design