The most striking difference between men and women is facial hair, researchers have discovered.
The findings, published online in the journal Psychological Science, were based on surveys conducted in the U.S. and in China.
Researchers from the University of Wisconsin-Madison and the University at Buffalo in New York collected more than 3,000 men and 1,400 women between 2005 and 2016.
They then analyzed the answers from these survey respondents in two studies.
The results show that facial hair can be very different from one person to the next.
Men who have facial hair tend to be more masculine, have more facial features and have more masculine facial features than women, researchers said.
Men with facial hair are also more likely to be older, have higher levels of education and have higher incomes.
Women with facial hairs tend to have facial features that are less masculine and have lower income, researchers say.
They are also less likely to have been married or have children, and their faces tend to more closely resemble those of men.
The differences between men with and without facial hair in each of these studies are striking.
For example, the researchers found that facial features of men with facial hairstyles are less prominent, more pronounced and appear less evenly spaced on a face.
But facial hair is not a trait that is associated with male dominance, or sexual attraction.
In contrast, women with facial features associated with sexual attraction were less masculine, more prominent and more pronounced.
The researchers found no differences in the number of facial features a man had, the number he had on his face, or whether he had a face tattoo.
The researchers say facial hair plays an important role in men’s self-esteem, as well as in women’s self esteem.
“The findings demonstrate that facial appearance can have significant influence on men’s sense of self-worth, as indicated by a greater likelihood of being perceived as a good man,” the authors wrote.
“These results are important for men’s ability to maintain positive social and romantic relationships and their ability to avoid problems with their partner or others.”
For women, the findings indicate that facial hairstyle is also a predictor of how well they are perceived as women, especially if they have tattoos or piercings.
“Women who have more feminine facial features are perceived to be better partners,” said senior author Anastasia Neslen, a psychology PhD student in the UW-Madison Department of Psychology.
“Men who exhibit more masculine and masculine-like facial features also are perceived favorably by their partners.”
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