Usability&

the User-Centered Design Process

What arethe most important points

from the reading?

.50 point

Usability has 5 dimensions*.

Each dimension can be measured.

Tradeoffs - you can’t have it all.

Novice - expert users - pleasing both

*Learnability. Efficiency. Memorability. Error prevention & recovery. Satisfaction.

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Learnability. Efficiency. Memorability. Error prevention & recovery. Satisfaction.

Usability

User experience

?

3 paradigms

Engineering: Things should work.1

Usability: and Things should be easy to use.2

User experience: and Things should be pleasant to use.

3

How ?

User-centered

design process

Requirements Analysis

Conceptual Design

Production

Launch

Resear

ch &

Eva

luation

Resear

ch &

Eva

luation

Research & EvaluationResearch & Evaluation

Requirements Analysis

Conceptual Design

Production Launch

Identify users / user groups

Understand user goals & needs

Understand client goals & needsTechnical requirements & limitationsResearch previous versions

Research competition

Research & EvaluationResearch & Evaluation

Requirements Analysis

Conceptual Design

Production Launch

Sketches

Mockups, wireframes, prototypes

Prototype evaluation

Information architecture

Brainstorming

Research & EvaluationResearch & Evaluation

Requirements Analysis

Conceptual Design

Production Launch

Production

Evaluation: usability testing

Research & EvaluationResearch & Evaluation

Requirements Analysis

Conceptual Design

Production Launch

Quality assurance

User problem tracking

iterative process

users

Understanding usersApply process

Next steps: