Involving Users in Interface Evaluation

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Table of Contents

Involving Users in Interface Evaluation

Outline

What is Usability?

Why do User Testing?

Two Main Approaches

Why Two Main Approaches?

Informal Study

Selecting Tasks

Choosing Participants

Deciding on Data to Collect

The “Thinking Aloud” Method

Thinking Aloud (cont.)

Ethical Considerations

User Test Proposal

Using the Test Results

Using the Results (cont.)

Measuring User Preference

Formal Usability Studies

Experiment Design

Experiment Design

Experiment Design

Experiment Design

Experiment Design

Interactions among Attributes

Experiment Design

Special Considerations for Formal Studies with Human Participants

More Special Considerations

Between Groups vs. Within Groups

Summary

Author: Marti Hearst

Email: hearst@sims.berkeley.edu

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