A woman's sex drive begins to plummet once she is in a secure relationship:
Researchers from Germany found that four years into a relationship, less than half of 30-year-old women wanted regular sex. Conversely, the team found a man's libido remained the same regardless of how long he had been in a relationship.Johtopäätös: Nainen kannattaa pitää epävarmuuden tilassa suhteen jatkumisen kannalta, koska muuten naisen ei-toivottu biologinen reaktio "The rational for why a woman's sex drive declines may be down to supply and demand. If something is in infinite supply, the perceived value would drop." hyppää kehiin. Jos nainen ei koe miehen sitoutumista varmaksi, naisen motivaatio tarjota seksiä pysyy yllä.
They found 60% of 30-year-old women wanted sex "often" at the beginning of a relationship, but within four years of the relationship this figure fell to under 50%, and after 20 years it dropped to about 20%. In contrast, they found the proportion of men wanting regular sex remained at between 60-80%, regardless of how long they had been in a relationship.