Читать книгу Eye Tracking the User Experience - Aga Bojko - Страница 29

Imagine a “quick-and-dirty” formative usability study aiming to assess the ease of use of a prototype website. You grab a few potential users, give them a few tasks, determine the key issues, and iterate the design. Adding eye tracking to your study might be unnecessary. Why use a microscope if what you are looking for can be detected with a simple magnifying glass (see Figure 2.12)?

Eye tracking tends to be more useful later in the design process, once the main wrinkles have been ironed out and much of the visual treatment has been finalized. It can benefit studies looking for answers to specific questions that arose from earlier testing and could not be properly addressed by previously used methods.

In summative studies that focus on user performance, eye movement measures will often correlate with other measures. However, adding eye tracking can be useful if you think the other measures may not be sensitive enough to detect what you want to be able to detect. The “Prescription Drug Labels” case study was a good example of this.

FIGURE 2.12 A magnifying glass is often sufficient for what you want to see.