But the biggest deal breaker of all turned out to be age, at least for women.
All other factors being equal, women overall were 400 times less likely to browse the profile of a man significantly older than herself. Whereas 20-year-old women were 10 times more likely to ignore a man 10 years her senior, 45-year-old women were nearly 10% more likely to browse the profile of a man 55 or older compared with a man her own age.
"That men care about height at all is, we suspect, a function of their realizing they may get rejected if they aren't quite a bit taller than their potential mates," she adds.
But when it came to body weight, men were less likely to browse the profile of a woman who was heavy-set, whereas women showed little aversion to—with some showing even more interest in—heavier-set men.
If a profile did not include a photo, for example, both men and women were 20 times less likely to even look at the rest of the person's profile.