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Contact with dads drops when women ovulate
Date:11/29/2010

Through an innovative use of cell phone records, researchers at UCLA, the University of Miami and Cal State, Fullerton, have found that women appear to avoid contact with their fathers during ovulation.

"Women call their dads less frequently on these high-fertility days and they hang up with them sooner if their dads initiate a call," said Martie Haselton, a UCLA associate professor of communication in whose lab the research was conducted.

Because they did not have access to the content of the calls, the researchers are not able to say for sure why ovulating women appear to avoid father-daughter talks. They say the behavior may be motivated by an unconscious motive to avoid male control at a time when the women are most fertile. But a more primal impulse may be at work: an evolutionary adaptation to avoid inbreeding.

Whatever the case, the researchers know that the findings are consistent with past research on the behavior of other animals when they are at their most fertile.

"Evolutionary biologists have found that females in other species avoid social interactions with male kin during periods of high fertility," said the study's lead author Debra Lieberman, a University of Miami assistant professor of psychology. "The behavior has long been explained as a means of avoiding inbreeding and the negative consequences associated with it. But until we conducted our study, nobody knew whether a similar pattern occurred in women."

The findings appear in the latest issue of "Psychological Science," a prominent peer-reviewed scholarly journal.

The study builds on a mounting body of evidence of subtle and significant ways in which women's behavior is unconsciously affected by the approach and achievement of ovulation a physical change that in humans has no outward manifestation of its own. Research has found that women tend to dress more attractively, to alter the pitch of their voices ways that
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Contact: Meg Sullivan
msullivan@support.ucla.edu
310-825-1046
University of California - Los Angeles
Source:Eurekalert

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