Women are generally more caring, sympathetic,
Just to pick on this specifically, last time you said this I pointed out that studies based on self report find a large difference in favor of women, studies based on physiological response very small measures, and studies of helping behavior find that men help more. Now you're claiming I dismissed your studies (which you only ever referenced in passing) by claiming that they were by people who had an agenda? I did say that there is a bias towards the "interesting" results in publishing, and it's true, but I said a lot more. The main thing is that in studying empathy, you always have to ask how it is measured. Self report is obviously worthless--you don't get an accurate picture of how people are by asking them about something they want to be, and that's even assuming they know in the first place.

http://itre.cis.upenn.edu/~myl/langu...es/005496.html

gives a nice summary:

A more recent survey (Richard A. Fabes and Nancy Eisenberg, "Meta-Analyses of Age and Sex Differences in Children's and Adlescents' Prosocial Behavior", 1998) came to a similar conclusion:

Sex differences were greatest when demand characteristics were high (i.e., it was clear what was being assessed) and individuals had conscious control over their responses (i.e., self-report indices were used); gender differences were virtually nonexistent when demand characteristics were subtle and study participants were unlikely to exercise much conscious control over their responding (i.e., physiological indices). Thus, when gender-related stereotypes are activated and people can easily control their responses, they may try to project a socially desirable image to others or to themselves.
It seems unlikely that there is a significant biological difference. Other motivations (usually social) come into whether it is expressed. Do you think it is socially unacceptable for men to act in a caring way towards their children? Do you think gay men are likely to care about that? It seems bizarre to bring gender role data into an argument about potential parents who are less likely to adhere to strict roles.