Lectures

Question 1

Low-fidelity prototypes

Answer 1

Verbal
Textual
Paper
Wizard of Oz
(Evaluation is Function)

Question 2

High-fidelity prototypes

Answer 2

Wire-frames (Evaluation is Interface)
Working interface
Physical
Live (Evaluate Performance)

Question 3

Representation

Answer 3

What is the prototype?

Question 4

Horizontal Prototypes

Answer 4

Design as a whole, but in more shallow way

Question 5

Vertical Prototypes

Answer 5

Design small interaction and prototype in detail.

Question 6

Prototyping Concepts

Answer 6

Representation
Fidelity
Evaluation
Scope

Question 7

Design for Feedback

Answer 7

Design Deliberately and get feedback often.

Question 8

Effective Prototyping

Answer 8

Easy to change
Make it clear it's a prototype
Be creative (change if needed)
Evaluate risks (get early feedback)
Prototype for the feedback you want to get

Question 9

Verbal Prototype

Answer 9

Use an analogy like “InstaCart is like Uber for groceries”

Question 10

Paper Prototype

Answer 10

Layout information and screen transition using cards

Question 11

GOMS Model

Answer 11

Goals
Operators
Methods
Selection Rules

Question 12

GOMS Weakness

Answer 12

Leaves out complexity

Assumes user is expert

Question 13

GOMS Strengths

Answer 13

Identify efficiency

Question 14

GOMS Variations

Answer 14

KLM - Key Stroke
CMN - Goal Hierarchy
NGOMSL - Natural language

Question 15

GOMS Tips

Answer 15

Small goals
Nest goals
Descriptive and prescriptive
Assign cost to operators

Question 16

GOMS Model Type

Answer 16

Processor

Question 17

Cognitive Task Analysis Model Type

Answer 17

Predictor

Question 18

Behaviorism

Answer 18

What we can observe

Question 19

Cognitivism

Answer 19

What people are thinking

Question 20

Cognitive Task Analysis

Answer 20

Understanding the thought process for performing a task.

Question 21

Cognitive Task Analysis Strengths

Answer 21

Emphasize mental process

Can be used for interface design

Question 22

Cognitive Task Analysis Weaknesses

Answer 22

Time-intensive
Deemphasize context
Not suited for novices

Question 23

Cognitive Models

Answer 23

CDM - Critical Decision
TKS - Task-Knowledge
CFM - Cognitive Function

Question 24

Distributed Cognition

Answer 24

Not just the users mind, but other computes and artifacts together to distribute the cognitive load.

Question 25

Social Cognition

Answer 25

Distributed cognition across humans.

Question 26

Situated Action

Answer 26

Design in context for novel situations

Question 27

Situated Action (Takeaways)

Answer 27

Design in context
Tasks are defined from interaction
Task doesn’t exist until users get started

Question 28

Activity Theory

Answer 28

Why the user is doing what they are doing

Question 29

Qualitative Evaluation

Answer 29

What users like or dislike

Question 30

Empirical Evaluation

Answer 30

Many users, summative, done with comparisons

Question 31

Predictive Evaluation

Answer 31

Without users

Question 32

Reliability

Answer 32

Same results

Question 33

Validity

Answer 33

Accurate data

Question 34

Percision

Answer 34

Specificity

Question 35

Generalizabitlity

Answer 35

Can extend to people that weren’t in the evaluation

Question 36

Evaluation Tips

Answer 36

Efficiency
Accuracy
Learnability
Memorability
Satisfaction

Question 37

Evaluation Design

Answer 37

Define Task
Define Performance Measures
Develop Experiment
Recruit Participants
Do Experiment
Analyze the Data
Summarize the Data

Question 38

Predictive Evaluation Types

Answer 38

• Heuristic evaluation – each expert experiments alone to find if a principle is violated
• Model based
• Simulation based
• Cognitive walkthroughs

Question 39

Qualitative Approach

Answer 39

Video - Intrusive
Notes - Slow
Software Logging - Limited

Question 40

Qualitative Tips

Answer 40

Run pilots
Focus on feedback
Use questions
Tell users what to do
Capture satisfaction