highly significantp < 10 −7
Furthermore, the difference in their medians was highly significant in 5 of 6 combinations ( p < 10 −7 , Wilcoxon rank sum test), with an effect size of 0.59 − 0.83 (AUC), although the difference was still significant in the remaining combination (ambiguous forward responses versus ambiguous reverse responses, p = 0.0016, AUC = 0.57).