
than participants’ task performance that could push up ratings. These
factors include the need to please, the need to be positive and not
critical, and the need to appear computer or product literate. Some-
times participants have an easy time with the last task and assume
that they were “getting it.” In other cases, participants may really want
and need the product or feature you are showing them. Even though
it may not be usable, the functionality is very benefi cial to them. As a
result they don’t want to say anything negative because they fear it
may delay the release of the product or feature.
There is no research verifying or clarifying the ...