Figure 4.

Performance when trials were terminated after subjects fixated on the target (early termination on final fixation, Experiment 1). (A) Subject's performance (green bars) was independent of the time between fixating the target and removal of the search screen. Note that for very short fixation times of 1–10 ms, performance is highly significantly different from chance (yellow bars; see Materials and Methods for details). (B) Confidence ratings of all trials (correct and incorrect). Subjects’ confidence rating (on a scale 1–3) increases as a function of fixation duration. Error bars are ±s.e. over subjects. Data shown on a non linear axis to emphasize the first bins. All ANOVA values refer to a one-way ANOVA (see Supplementary Material for details).