Figure 3.

Log reaction time distributions for men (gray) and women in either the luteal (blue) or follicular (red) phase of the menstrual cycle during the day (A) and night (B). Group means and standard error of the means (SEMs) at each percentile are presented. Pairwise comparisons were performed at the 5th, 25th, 75th, and 95th percentiles. Asterisks to the left of the curves indicate comparisons of men with luteal-phase women. Asterisks on the right-hand side of the curves indicate comparisons of follicular-phase women with both men (gray asterisks) and luteal-phase women (blue asterisks). *p < 0.05, **p < 0.01, ***p < 0.001 for independent sample t-tests.