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From the article:
“However, estrogen is very behaviorally potent and is actually a close hormonal relative to testosterone. In female mammals, estrogen has been tied to dominance, but there has been scant research examining the behavioral roles of estrogen in women.”
Schultheiss and Stanton measured women’s power needs and then assessed salivary estrogen levels both before and after they entered a one-on-one dominance contest.
The researchers found that even before women got involved in the contest, higher power motivation was associated with higher levels of estrogen.
Winners of the contest showed even further increases in estrogen after the contest, but only if they had a strong need for power. Notably, this increase could still be detected one day after the contest was over.
In contrast, power-motivated losers showed a post-contest decrease in estrogen. These effects were not observed among women who did not possess a strong need for power.