Research conducted by researchers from the three universities of the Pennsylvania State University, the University of Missouri and the University of Sterling, Scotland. In research published in the journal Hormones and Behavior was revealed, the rate of women increased sexiness towards the fertile period due to hormonal changes that have an impact on the change of voice and face.
In the study, researchers involving 202 women taken photos of his face and recording their voices while talking. Two steps were performed when the woman is in the coming months. At the same time, the research team also took samples of saliva the respondents to measure the amount of hormones.
After that, researchers asked 500 men rated a woman's sexiness based on photographs and recordings of his voice. The result, according to the man's face and voice of women becomes even more interesting when the level of the hormone progesterone declines and estrogen increases.
"The only time when increased estrogen and progesterone levels decreased at the same time is in the approaching ovulation, when fertility is reached its peak," said research leader, David Puts who is Assistant Professor of anthropology at Pennsylvania State University, was quoted as saying the Huffington Post.
In such research, the researchers also asked 500 women to measure the level of sexiness 202 respondents throughout the menstrual cycle progresses. 500 women that provide value on a facial image and sound recordings based on two measures: how tempting and how sexy for men. As a result, 500 such women gave high marks on two of the measuring instrument when respondents were most fertile at the time.
"We learn that the voice and the face of women change during the menstrual cycle. And both men and women see it as an attraction, "said Puts again.
According to Puts again, in fact the women hormonal changes do not affect the sound. Such changes would have an impact on the view of sexiness. The view that influence people to assess whether or not the sound interesting.
As for the facial changes during the menstrual cycle, hormonal changes are indeed no effect can make the face become more attractive or not. "There could be changes in blood flow so that the impact on facial acne, discoloration or swelling," he said.
