Table 1: A brief glimpse into the variability of procedures used within infant eye-tracking studies.

Studies Participants Methodology General Findings
Jones & Klin (2013) [13] 110 infants Car seat or reclined bassinet Decline in eye fixation in infants later diagnosed with autism spectrum disorder
2-24 months 5-point calibration1
Videos of people
Lui, et al. (2011) [47] 23 infants Car seat Whole face stimuli showed no differences
4-9 months 5-point calibration4 Over time, decreased fixation duration on internal features of other race faces
Videos of same and other race faces
Hunnius & Geuze (2004) [33] 10 infants Infant chair Adapted gaze behavior to stimuli characteristics
12-26 weeks 2-point calibration3 Direct attention to mother's eyes and mouth.
Dynamic stimuli of mother
Hunnius, Wit, Vrins & Von Hofsten (2011) [48] 31 infants: 4 months Parent lap Demonstrated avoidant looking at threat based emotional expressions
29 infants: 7 months
9-point calibration4
Faces of people
Frank, Vul & Saxe (2011) [44] 129 infants Parent lap Over time, attention directed to parts of complex scenes that are socially intriguing.
3-30 months 2-point calibration1
Live action videos
Gredeback, Fikke, & Melinder (2010) [49] 40 infants Experimenter lap Infants followed the gaze of unfamiliar individual rather than mother
2-8 months 2-point calibration2
Visuals of people engaging in a task

Methodology for data analysis used: 1MATLAB; 2Tobii Studio; 3Author designed; 4Not documented.