How much age difference husband and wife the best

Men choose to have more children "Shaoqi"

A study in Austria, if with a little older than his 6-year-old female with the male's reproductive capacity will be in the best condition; while women, if the spouse 4 years older than their big, they will have more more children.
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Of course, the husband is not too old couples with fertility advantage, if the husband is 10 years older than his wife, the couple number of babies born with those older 5-year-old male couples is the same. These results provide a strong evidence: the vast majority of human civilization, the "little doctor's wife" has evolved into a combination of a standard, the reason is that this combination can bring reproductive advantage.



Analysis of marriage records for the world, we can see on the average, the world of men prefer to choose their own small 266-year-old age than women as partners, women aged greater than themselves, for men 3.42 years more favor.



For this phenomenon, the usual explanation is that male fertility prefer a strong partner, and to meet this requirement is of a young girl. In contrast, women are more interested in the pursuit of wealth and status of sexy men, and to meet this requirement is clearly more older individuals. While this is theoretically established, but previous studies have not found that men choose "Shaoqi," or women's choice of "old lady" has no reproductive advantage.



　　The critical point of the age gap between husband and wife

The study by the University of Vienna, Austria Martin Roger Federer and Susan Naha new study conducted by Bull, the first time found such evidence. They more than ten thousand pairs of couples in Sweden have been studied and analyzed a database, the specific findings published in the Journal of the Royal Society "Biology Letters" on.



For men, the average number of babies will be decreasing with increasing partner age, but the age difference of the "critical point" for the 592-year-old, in a larger age difference appears, the average number of babies will be showing a decline trend. Similar findings also occur in women, their average number of babies will grow with partner age, age difference of the "critical point" was 3.97 years.



If the spouse of his wife's older than big changes in this curve is still very clear: the number of children born increases with age gap rapidly decreased. Main reason may lie in: Women's fertility in the early stages of a more have a downward trend. If a woman older than her partner is 10 years old, she may fall in fertility when forming a family, but the phenomenon is not often an older male who appears.



These results show that the age difference between husband and wife apparently evolved the "appropriate" as a result. The age when men than women, more children would have come to this world. The two scientists conducted the study said: "The findings may explain the phenomenon of male preference for women older than their smaller, with women more likely than their big hope and aged men as partners. This is obtained by evolution a feature. "