Why men choose the woman is more senior than themselves? Psychologists objsnyat it the fact that to men much more comfortably in the relations with the woman is more senior as the similar relations are already put in their subconsciousness. Since the birth of the man are surrounded by women is more senior than itself - mother, the grandmother, the nurse, the teacher in kindergarten, the school teacher. The man intuitively understands that his darling wiser, more interesting also is more skilled. It is indulgent to its weaknesses, and also can give care and the adoration similar to maternal. Why the woman chooses the man is younger than herself? The keyword here – "to choose". According to many psychologists, it is really the choice. For the woman most often it is the choice for strong passions and an opportunity to refresh the relation to life and to sex. The relations with more young man is a novelty in a bed, novelty of impressions and events. Younger man is an opportunity for the woman to feel artificially more young. The social status of the woman can be one more cause. The woman is more senior on age usually also higher by the situation in society and the income. And it is difficult for such women to meet less successful men. But if it is about the young lover, the situation becomes simpler. In what danger of such marriage? Watching long time couples in which the woman is much more senior than the husband, professor Sven Drefal from the Max Planck Institute of demographic researches came to a conclusion that the pobodnykh of mismatches is the main problem shortage of social support - condemnation, rejection - that can lead to less joyful and more stressful life, decrease in health and, at last, the increased mortality. Couples in which the wife is more senior than the husband for 5 years get divorced by 3 times more often than couples where the husband and the wife about one age. One more dangerous moment of such marriage is that the young husband can fall in love with the woman is younger than itself, intuitively understanding that in such relations it will dominate most likely. But despite such sad statistics and unfavourable forecasts, examples from life of stars and ordinary people show - marriages in which the wife frighten the husband, can be quite happy and long. 
The original source of the article you apparently translated from Russian: http://comode.kz/post/relations/muzh-namnogo-mladshe-zheny-budet-li-schastlivym-brak/