Читать книгу Eye Tracking the User Experience - Aga Bojko - Страница 23

Eye tracking is sometimes able to detect usability problems even when conventional usability testing methods such as behavior observation and participant feedback elicitation don’t indicate that there is a problem. For example, let’s say that a study participant clicked on the correct link almost right away but also looked at another link a couple of times before making his decision. Even though the observable outcome was a success and the participant didn’t mention a problem, there might still have been some initial confusion.

While it is compelling to want to use eye tracking to uncover usability problems that were not uncovered otherwise, this type of insight is not as prevalent as you might think. If there really is confusion, someone eventually will make a mistake or verbalize uncertainty. The higher the sample size in your study, the more likely that is to happen. Iterative testing also increases chances of these problems revealing themselves in more obvious ways. But, if all you have resources for is one small usability test, digging deeper into the eye tracking data may expose participant difficulties that are important to address. Chapter 12 provides more information on how to find usability issues based on eye tracking data even when other methods may be pointing to a problem-free experience.