orwebdev

"In this paper we assess the performance of an open-source gaze tracker in a remote (i.e. table-mounted) setup, and compare it with two other commercial eye trackers. An experiment with 5 subjects showed the open-source eye tracker to have a significantly higher level of accuracy than one of the commercial systems, Mirametrix S1, but also a higher error rate than the other commercial system, a Tobii T60. We conclude that the web-camera solution may be viable for people who need a substitute for the mouse input but cannot afford a commercial system."

"Usability practitioners often rely on research participants' verbal reports to better understand the user experience. These reports can be collected either during or after task execution, with each approach entailing unique benefits and limitations. This note presents a framework for using eye tracking data to "trigger" when and how moderators probe participants for verbal comments during task execution to supplement or elaborate participant-initiated comments. A preliminary case study suggests that this approach affords a level of efficiency and effectiveness difficult to achieve with retrospective verbalization or without the use of eye tracking. The hope is that practitioners will be encouraged to use and refine this method for the benefit of the field."

"Vom "Usability- zum User Experience-Experten"…"