Cost-Justifying Usability, 2nd Edition

2. The participants are real users.

3. The participants do real tasks.

4. You observe and record what participants do and say.

However, RITE differs in the following ways:

1. Key decision-makers must observe the participants with the usability engineer. In

this case a “decision-maker” is someone who has the authority to authorize a

change to the user interface. Identifying the minimal set of these individu-

als is critical to the success of RITE.

2. The data are analyzed after each participant or at least after each day of

testing.

3. Changes to the user interface can be made as soon as a problem is identified

and a potential solution is clear. In situations ...