Feminine psychology can be at least partially explained by the fact that they are the carriers of the placenta. In order to carry a baby for nine months the body must be subject to a fairly precise amount of hormones, some of which come in relatively high concentrations during pregnancy, or at certain times during the ovulation cycle.
Estrogen and Progesterone are probably the two most important, but there are others - LH, FSH, etc.
These hormones stimulate and maintain the uterine lining, and serve other functions in the childbearing process, but a side effect is that they create a situation where the brain is more sensitive to certain stimuli, or in psychological terms stress.
Men experience this, too. Get done pumping iron, you're more apt to want to fight versus resolve conflict diplomatically.
Hormones have an effect - it's a well established fact. Women are subject to a great deal of hormonal change on a regular basis.
Hence their minds are quite a bit different than ours.
Evolution dictates that they would also be adapted to childcare - and hypersensitivity to external stimuli is certainly beneficial to survival.
"TIGER! RUN!!"
Men might get eaten, but then men are not really necessary after the conception.
(from a certain biological standpoint that is - psychologists and many other well respected and well published scientists including biologists would disagree - the case can be made, though)