Figure 4.17: What is he looking at? When people look at faces like this, even in photographs, they reflexively shift their own eyes in the direction at which the observed eyes are looking. Because of the white sclera, it is easy to see where human eyes are pointed. Contrast this to the obscuring coloration of the sclera of other primates, such as chimpanzees (in Figure 4.15).

Ingram/Inmagine