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AP NEWS
May 23, 2006
Vital Signs
Choices: Testosterone Matters, but Only in the Short Term
By NICHOLAS BAKALAR
Women can tell whether a man has high testosterone levels and whether he likes children just by looking at his face, a new study has found.
Researchers recruited 39 heterosexual men ages 18 to 33 and tested their testosterone levels. They measured the men's level of interest in children by asking whether they preferred pictures of adult or infant faces when both were presented at the same time.
Then they showed photographs of the men's faces to 29 women from 18 to 20. On a scale of 1 to 7, the women rated the men for "likes children," "masculine," "physically attractive," and "kind." Next, they rated the men's attractiveness as short- and long-term partners.
The women consistently rated men with high testosterone levels as physically attractive, and consistently gave high marks for "likes children" to those who scored high on the infant preference test.
They rated men with high testosterone levels as attractive for short-term relationships, but considered men with high "likes children" levels as more appealing for the long term. The study appears online in The Proceedings of the Royal Society B.
"There does seem to be some information in faces that could be important for mate choice decisions," said James R. Roney, an assistant professor of psychology at the University of California, Santa Barbara, and the study's lead author.
But he remained cautious about the results. "We don't know how important a role these things play in the real world," he said. "I'd just like to urge a little caution in how these findings are interpreted, and I'd like to see them replicated in an independent sample before drawing any grandiose conclusions."
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May 23, 2006
Vital Signs
Choices: Testosterone Matters, but Only in the Short Term
By NICHOLAS BAKALAR
Women can tell whether a man has high testosterone levels and whether he likes children just by looking at his face, a new study has found.
Researchers recruited 39 heterosexual men ages 18 to 33 and tested their testosterone levels. They measured the men's level of interest in children by asking whether they preferred pictures of adult or infant faces when both were presented at the same time.
Then they showed photographs of the men's faces to 29 women from 18 to 20. On a scale of 1 to 7, the women rated the men for "likes children," "masculine," "physically attractive," and "kind." Next, they rated the men's attractiveness as short- and long-term partners.
The women consistently rated men with high testosterone levels as physically attractive, and consistently gave high marks for "likes children" to those who scored high on the infant preference test.
They rated men with high testosterone levels as attractive for short-term relationships, but considered men with high "likes children" levels as more appealing for the long term. The study appears online in The Proceedings of the Royal Society B.
"There does seem to be some information in faces that could be important for mate choice decisions," said James R. Roney, an assistant professor of psychology at the University of California, Santa Barbara, and the study's lead author.
But he remained cautious about the results. "We don't know how important a role these things play in the real world," he said. "I'd just like to urge a little caution in how these findings are interpreted, and I'd like to see them replicated in an independent sample before drawing any grandiose conclusions."
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