Moderating Usability Tests

marketing-related questions after participants have used the pro-

duct, such as how likely they would be to purchase the product.

4. A self-administered questionnaire or a set of closed-ended ques-

tions or ratings that ask about the usability of the product. The

questionnaire might be one of the standardized options that have

been developed—for example, the Software Usability Scale

(Brooke, 1996)—or one that your organization has developed

internally.

When deciding the best order for post-task activities, the general rule

we follow is:

If the test is diagnostic, fi rst perform the activities that will tell you

the most about the strengths and weaknesses ...