A study published September 19 in the Archives of Sexual Behavior, the Official Publication of the International Academy of Sex Research, says that facial features may indicate a person’s sex drive, fidelity in a relationship, and differences in the tendency to have casual, uncommitted sexual relationships. Science News elaborates:
The study adds to a growing body of research that has previously shown that certain psychological and behavioral traits are associated with particular facial width-to-height ratios (known as FWHR). Square-faced men (who therefore have a high FWHR) tend to be perceived as more aggressive, more dominant, more unethical, and more attractive as short-term sexual partners than their thinner and longer-faced counterparts.
Researchers attributed differences in facial proportions to variations in testosterone levels during particular developmental periods, such as puberty. This hormone plays a role in forming adult sexual attitudes and desires.