Abstract
The present chapter describes an automated deception test known as the Ocular-Motor Deception Test (ODT). The ODT uses a remote eye tracker to record gaze position and pupil size while an examinee reads and answers a series of true/false statements. Following a brief overview of the ODT, the chapter presents the theoretical assumptions on which the test is based. It describes how test items are formulated and presented to examinees and how ocular-motor and behavioral measures are combined to render decisions. The chapter reports reliability and criterion-related validity coefficients obtained for ocular-motor measures in several laboratory mock crime experiments and a field study. On average, accuracy of decisions on cross-validation was 83.1% under standard laboratory conditions and 86.1% in the field study. The chapter concludes with a discussion of the limitations of the ocular-motor deception test and areas in need of research.
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