Fig 6. Discrimination performance (d’) in Experiment 2 (forced fixation).

These two analyses investigated the independent two-way interactions of orientation and headedness and of fixation location and headedness. (A) The BIE was again reduced for headless compared to whole bodies due to a reduction of discrimination performance for headless upright compared to whole upright bodies. The three fixation location conditions were pooled together in this analysis (*** = p < 0.001). (B) For whole body trials, discrimination performance was relatively lower for pelvis than head and torso, but for headless body trials, discrimination performance did not differ among fixation locations. Upright and inverted conditions were pooled together for this analysis (* = p < 0.05, ** = p < 0.01). For both plots, error bars indicate standard error of the mean.