In summary, Trivers's (1972) theory of parental investment and sexual selection makes two profound predictions: (1) the sex that invests more in offspring (typically, but not always, the female) will be more discriminating or selective about mating; and (2) the sex that invests less in offspring will be more competitive for sexual access to the high investing sex. In the human case, it is clear that women have greater obligatory parental investment. To produce a single child, women must endure a nine-month pregnancy, whereas men can produce that same child with as little as a few minutes of investment. When it comes to long-term mating or marriage, however, it is equally clear that both men and women invest heavily in children, and so the theory of parental investment predicts that both sexes should be very choosy and discriminating.
·
43 görüntüleme
Yorum yapabilmeniz için giriş yapmanız gerekmektedir.