Male chimpanzees tend to prefer older females than younger and it is suggested that specific cues of female mate value are very different to humans.Buss attributed the young age preference for females to the cues that youth has.The rational choice model suggests that people look for partners who can provide for them in their life (bread-winners); as men traditionally earn more as they get older, women will therefore prefer older men.One of the concerns of relationships with age disparities in some cultures is a perceived difference between people of different age ranges.A British psychological study published in Evolution and Human Behavior in 2010 concluded that men and women, in general, continued to follow traditional gender roles when searching for mates.The study found that, as supported by other academic studies, most men preferred younger, physically attractive women, while most women, of any age, preferred successful, established men their age or older.These two theories explain why natural and sexual selection acts slightly differently on the two sexes so that they display different preferences.
In all 37 cultures it was found that males preferred females younger than themselves and females preferred males older than themselves.
did females show a preference for males significantly younger than male preferences for females" and that there was a "consistent cross-cultural preference by women for at least same-age or significantly older men".
A 2003 AARP study reported that 34% of women over 39 years old were dating younger men.
Females demonstrate a complementary pattern, being willing to accept considerably older males (on average 8 years older) and were also willing to accept males slightly younger than themselves (on average 5 years younger).
This is somewhat different to our close evolutionary relatives: chimpanzees.