
We are not saying that you should not ask for more information
when it will throw light on a usability issue. But asking for more
information is different from manipulating the participant to repeat
negative comments.
Finally, during the post-test interview, you may say, “Were there other
problems that you saw?” This leading question may be intended to
get participants to discuss and vocalize an issue that is already clear
to you from their performance. We will have more to say about this
when we discuss rule 8, “Be unbiased,” in the next chapter.
3.2 RULE 2: PROTECT PARTICIPANTS’ RIGHTS
Organizations and individuals that conduct tests have certain ...