Psychology of speed dating
The usual explanation of this phenomena is based on evolutionary psychology: a female has a lot more to lose from a bad mate choice than a male does.
If there were a biological, genetic basis for this tendency, it should be difficult to come up with an experimental setup in which women are less selective and men are more selective. This study demonstrates that a small, seemingly trivial change in the speed dating ritual results in a (partial) reversal of the normal results.
Given the usual state of science journalism, the fact that the article includes links that let me find a press release about the upcoming paper and a 20-page PDF file containing the paper itself was very helpful.
According to most studies and in accordance with popular stereotypes, men are normally less selective than women when it comes to evaluating potential romantic partners - in general, it appears that men are more likely to want to date any given woman than women are to want to date any given man.
Dieser Frauen sind verzweifelte Single-Mütter und fremdgehende Ehefrauen, die auf ein wenig Spaß aus sind.