Research has shown that incorporating eye tracking can provide certain benefits compared with traditional usability testing. Replaying the participant’s gaze during an interview held after the task will uncover significantly more usability problems than using other known usability methods.
Think aloud methods are often used when attempting to detect usability problems. There are generally two ways to conduct a think aloud interview: either the participants are asked to verbalize their thoughts while they are doing tasks, i.e. concurrent think aloud (CTA), or the participants provide a description of their experiences doing the tasks after each or all of the tasks are completed, i.e. retrospective think aloud (RTA).
A number of studies have shown that the evaluation method RTA supported by eye tracking data as a memory cue will, in fact, uncover significantly more usability problems than using other known usability methods. Moreover, studies also show that a significantly higher task-completion rate is achieved when using this method than when applying conventional CTA methodology. This supports the notion that standard think aloud methodology inflicts upon the user’s behavior, thereby giving biased results.
Tobii Studio is first to feature RTA with gaze data replay in one tool. Built-in support for recording user comments, facial expressions and mouse movement while a user explains their behavior after a test eliminates the need for external recorder or video camera. Interview recordings can be exported as movies for integration into your presentation.
Read more in Guidelines for Using the Retrospective Think Aloud Protocol with Eye Tracking.