Menstrual cycle effects on prosocial orientation, gift giving, and charitable giving

Recent research has found that the menstrual cycle affects product preferences. However, might the menstrual cycle also impact whom women prefer to spend their money on? Drawing from evolutionary theory, we predict and find that women are more prosocial during the luteal phase than during the follicular phase. Across three studies, we show that women allocate more money towards gifts for loved ones during the luteal phase, and that this...