Scientists working in Chicago and California have determined that a woman can tell just by looking at a man’s face whether he is a potentially good parent or more suitable for a short-term relationship.

They tested the testosterone levels of men and had them select photos of people from a selection of all ages.

They then showed pictures of these men’s faces to women and had the women rate them for various personality traits, like kindness, masculinity, physical attractiveness, and whether they appeared to like children. The women then rated the men as to whether they would be a better prospect for a long-term or short-term relationship.

Women preferred the more masculine-looking men - the ones with the higher testosterone levels - for short-term relationships and the less masculine ones for long-term relationships.

The more feminine-looking men were more likely to select pictures of babies. Women were easily able to differentiate between higher and lower testosterone levels in men.

So you see, guys, you can’t hide anything. It’s right out there, written on your face. You can’t see it, but any woman can read you like a book.

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