FIGURE 5.2 Visual scanning The lines superimposed on these face pictures show age differences in where two babies fixated on the images. (a) A 1–month–old looked primarily at the outer contour of the face and head, with a few fixations of the eyes. (b) A 2–month–old fixated primarily on the internal features of the face, especially the eyes and mouth. (From Maurer & Salapatek, 1976)