Getting back to the science, in order to observe the emotionality of men vs. women, Beltz and colleagues recorded the positive and negative emotions of 142 men and women over 75 days. To control for the influence of those pesky female hormones, the researchers followed four groups of women: naturally cycling and those on three different forms of oral contraceptives.

Using a variety of measurements for emotionality, the researchers could find no significant difference between any of the groups. Men’s emotions varied to the same degree that the women’s did.

“We also didn’t find meaningful differences between the groups of women, making clear that emotional highs and lows are due to many influences—not only hormones,” said Beltz in the press release.

In further support for the emotional equality of the sexes, another new research study finds that not only are men just as emotional as women, they may be more emotional during breakups.