Eye tracking as a hands -free input method can be a significant addition to the lives of people with a motor disability. With this motivation in mind, so far research in eye -controlled interaction has focused on several aspects of interpreting eye tracking as input for pointing, typing, and interaction methods with interfaces. In this chapter, we review and elaborate different evaluation methods used in gaze interaction research, so the readers can inform themselves of the procedure and metrics to assess their novel gaze interaction method or interface.

Chapter Contents:

• 6.1 Background and terminology
• 6.1.1 Study design
• 6.1.1.1 Within-subjects and between-subjects designs
• 6.1.1.2 Counterbalancing
• 6.1.2 Participants
• 6.1.2.1 Ethics
• 6.1.3 Experimental variables
• 6.1.3.1 Independent variables
• 6.1.3.2 Dependent variables
• 6.1.3.3 Further variables
• 6.1.4 Measurements
• 6.1.4.1 Statistical analysis
• 6.2 Evaluation of atomic interactions
• 6.2.1 Evaluation of gaze-based pointing and selection
• 6.2.1.1 Objective measures
• 6.2.1.2 Subjective measures
• 6.2.2 Evaluation of gaze-based text entry
• 6.2.2.1 Objective measures
• 6.2.2.2 Subjective measures
• 6.3 Evaluation of application interfaces
• 6.3.1 Comparative evaluation
• 6.3.1.1 Methodology
• 6.3.1.2 Objective measures
• 6.3.1.3 Subjective measures
• 6.3.2 Feasibility evaluation
• 6.3.2.1 Methodology
• 6.3.2.2 Measurements
• 6.4 Summary
• References

Inspec keywords: gaze tracking; human computer interaction; handicapped aids

Other keywords: hands-free input method; people with motor disability; gaze interaction method; eye-controlled interaction; eye tracking

Subjects: User interfaces; Computer assistance for persons with handicaps