A man usually tend to be attracted to the spouse who has a facial resemblance to him. But the results of research on sexual preference shows, the choice of men can change as a result of stress. Kala depressed, they become more open with more variety of women.
In the relaxed condition, the man did not fall in love at couples whose face was not like them. The male rate is 14 percent women less attractive than faces which have a similarity with them. However, in groups of male stress, couples whose faces are not similar to those assessed 9 percent more attractive.
Johanna Lass-Hennemann from the University of Trier Germany who led the research said the findings are consistent with previous research that the animals lose interest in normal sexual when in stressful conditions.
"Men tend to approach the different partners and this rate is more fun when they are in a state of acute stress. But we're not sure how this can be reflected in the actual decision of choosing a mate," said Lass-Hennemann.
Experts suspect, interest in choosing a mate who has a facial resemblance to the human tendency associated with a greater reliance on familiar faces. This factor also plays an important role in establishing long term relationships. However, in conditions of stress, the effect of facial similarity is likely to fade.
Lass-Hennemann speculate that stress may increase the tendency of men to marry or reproduce with women who have genetic differences. The benefit is the child born from this relationship may be more resilient and able to cope with a stressful environment.
"We think that the environment should be filled with chronic stress can increase hybridization (outbreed). Therefore, inbreeding will give birth to offspring who may not be genetically diverse enough," he said.
In research published in the journal Proceedings of the Royal Society B, researchers involved 50 healthy heterosexual students are divided into two groups. The first group was asked to dip his hand in a bucket of cold water for three minutes before a test. While the second group was asked to do the same, but with normal temperature water body temperature.
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