Figure 4.

Factors that influence fixation duration. (A) middle fixation duration as a function of the item rating. (B) middle fixation duration as a function of absolute rating difference between two items. (C) middle fixation duration as a function of the index of fixation (trials with only one fixation are excluded from this analysis). (D) fixation duration by type. Middle fixations indicate the fixations that are not the first nor the last fixation in a trial. Bars represent the empirical data (error bars indicate 1 s.e.m. across participants); lines represent the model simulation results.