1. Chapter 20 Why evaluate the usability of user interface designs?

2. Why Evaluate the Usability of User Interface Designs?
Does the Interface Meet the Usability Requirements?
Effective
Efficient
Engaging
Error tolerant
Easy to learn
Exploring Other Concerns in Evaluations
i.e.
Why users are unable to complete tasks easily.
Is the UI developed for all levels of users?
Are all design features acceptable to users?
UIDE Chapter 20

3. Users, Tasks, Environment, and Domain
Our Running Example: Global Warming
The Users for S103
Users’ Tasks and the Global Warming UI
CD-ROM based
The Domain for the Global Warming UI
Paper-based and CD-ROM materials
The Environment for the Global Warming UI
Home-study, or work
Description of the Global Warming User Interface
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10. The Activities of Usability Evaluations
The Process of Usability Evaluation Is Iterative
Techniques for Usability Evaluations
User Observations
Inspections of the User Interface
Conform to usability standards?
Other Evaluation Techniques
Variations of user observation or inspection
UIDE Chapter 20

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12. What Happens in a User Observation Evaluation Session?
Welcome participant, explain purpose, make participant comfortable
Ask participant to complete tasks while you observe and record
Following completion of tasks, as for participant’s views, or to complete posttest questionnaire
Thank participant.
UIDE Chapter 20