Fig. 2.

A naive subject’s absolute-judgment distributions from the 1-line test conditions (Top row) and 2-line test condition (Bottom row). The distributions for the 50° and 53° stimuli are shown on the Left and Right, respectively. In each panel, the red and black arrows indicate the actual stimulus orientation and the mean of the distribution (i.e., the mean of the subject’s reported orientations), respectively. See SI Appendix, Fig. S1, for comparisons of variances and biases between all 12 subjects’ 1-line and 2-line absolute distributions. deg, degrees.