Fig. 4.

Correspondence between saccadic behavior and fixation-dependent performance. (a) Forced fixation performance for two groups of extreme observers: “eye-lookers” in black and “nose-lookers” in grey. A clear differentiation emerges with eye-lookers displaying severe performance costs as they are forced to fixate lower on the face. Arrows represent the mean landing positions for each group in the Short condition. (b) Correlation between each observer’s preferred saccadic end point and their performance profile. In general, the farther up on the face an individual chooses to look, the greater the performance penalty for fixating away from the eyes. Error bars represent one s.e.m.