In order to compare the psychological strength of women and men, we first need to define the term "psycholigical strength" better. What is psychological strength?
Is it the ability to do math equations? The ability to do math equations without feeling undue stress? The ability to do math equations while wondering how you are going to get your homework done and still have time to go on dates? The ability to do math equations and paint your nails and fight against inequities all at the same time?
Is it the ability to not feel like murdering everyone in your office when word gets out that you and your husband are having a baby and they all give you pitying, condescending looks? Is it the ability to not want to smack your idiot co-worker when he asks you, "so you knocked her up?"
Is it the ability to go to the grocery store with your four children and not want to scream when people look at you funny and ask you "Are they all yours?" Is it the ability to not wring people's necks when you are out with your kids and the cashier, seeing that you are a guy, asks you, "Babysitting today?" when it is obvious these kids are YOURS and you ENJOY spending your time with them?
Oh, wait. What a stupid concept. Comparing the psychological strength of men and women is about as misguided and pull-your-head-out dumb as watching American Idol.