The study, still under peer review before publication, analyzed 22,000 online daters and found that women put a premium on income and height when deciding which men to contact, said Dan Ariely, a Duke behavioral economist who worked with University of Chicago researchers on the project. For example, the study showed a 5-foot-9-inch man needs to make $30,000 more than a 5-foot-10-inch one to be as successful in the dating pool.
— Online love life: World’s just not fair - CharlotteObserver.com