Figure 1 Caption.

The upper left photograph shows the manual face image and eye gaze measurement apparatus for the original Fagan test. The upper right photograph shows the initial calibration of Tobii X2–30 infrared camera (mounted on bottom of laptop) for calibrating pupil gaze to the modified Fagan Test picture presentations on the large monitor screen. The bottom figure shows the familiarization trial presentation of the same pair of Ugandan faces for 25 seconds, followed by the gaze preference trial with the presentation of both the familiar (prior) face and the new (unfamiliar) face for 15 seconds.