ABSTRACT
This chapter focuses on the practical and theoretical use of ocular-motor measures as one possible measurement tool in a convergent approach to the study of cognitive load. It describes fundamental issues and assumptions when using eye tracking to study cognition and to apply those issues specifically to the study of cognitive load. The chapter argues that ocular-motor measures can be used to provide both static and dynamic indicators of processing load, and they are becoming increasingly common and easy to use in cognitive research. It provides researchers with general information about ocular-motor measures, how they are used, and how they are interpreted. The chapter also focuses on the use of two types of ocular-motor measures for studying cognitive processing: fixation-based measures and task-evoked pupillary responses. Fixation-based measures are most frequently used in reading research, but they have become increasingly common in studies of visual search.
