17 septiembre 2015
Fluctuating hormone levels change a woman’s social behaviour over the course of the menstrual cycle. Mood swings and irritability before the period as well as a greater interest in sex during ovulation are well known. Now psychologists have discovered that the willingness to share one’s own resources with strangers also fluctuates with hormone levels. Women exhibit a higher willingness to cooperate during and shortly after menstruation — this is the result of two online studies involving over 400 German and US American women.
http://www.sciencedaily.com/releases/2015/09/150917091303.htm
