Figure 9.

Face-identification accuracy, averaged across observers, as a function of fixation position (Experiment 5: forced-fixation tasks). Open symbols: human data for preferred fixation positions. Closed symbols: human data for fixations at forehead, eyes, nose, or mouth. Error bar: ±1 standard error of the mean. The best-fit curves predicted by the FIO are shown in solid lines. The vertical distributions (±1 standard deviation) of the first fixation positions from Experiment 1 are shown in shadings for comparisons (blue: Asian observers; red: Caucasian observers).