Assuming straightforward behavior, we also find significant differences in attribute weights across genders, with males putting more weight on physical attractiveness and females putting more weight on intelligence. Further, we find that males place negative value on ambition and intelligence above their own self-rated levels.
The most significant part of their paper is that women become more selective with a larger group of men, whereas males will select more women to go out with if they have a larger group to select from.
The researchers find that that females, in general, may become more selective because their utility cost for dates is concave (more dates become costlier to them). They suggest a few reasons, most notably that there might be a “social stigma” by dating too many men.