These big-chinned women are however found to be less attractive to men who are looking for a long-term relationship.

These big chins in women could be brought about by a slightly higher than average level of the testosterone hormone, which comes in varying levels in women. Testosterone seems to heighten the taste for sexual activity, as well as causing a slightly more masculine appearance. The American and Canadian researchers thus selected a group of women and questioned them on their sexual history and fantasies. They subsequently asked a group of men to rate these women’s desirability as life partners. These men tend not to select women with rather masculine attributes, as they fear they might be less faithful.

The explanation given by psychologists is that men have a desire for their partner to be as faithful as possible. This desire seems to be motivated by the will to be certain one is raising his own progeny and not that of another.

This discovery is thus quite important, as it aims to show that men make decisions based on obvious physical features to scope out the best candidates for fidelity.