Physical attractiveness is the perception of the physical traits of an inividual human person as pleasing or beautiful. It can include various implications, such as sexual attractiveness, cuteness, and physique. Judgment of attractiveness of physical traits is partly universal to all human cultures, partly dependent on culture or society or time period, and partly a matter of individual subjective preference. Despite the existence of universally agreed upon signs of beauty in both genders, both heterosexual and homosexual men tend to place significantly higher value on physical appearance in a partner than women do. This can be explained by evolutionary psychology as a consequence of ancestral humans who selected partners based on secondary sexual characteristics, as well as general indicators of fitness (for example, symmetrical features) enjoying greater reproductive success as a result of higher fertility in those partners, although a male's ability to provide resources for offspring was probably signalled less by physical features. There appear to be universal standards regarding attractiveness, such that raters agree who is and isn't attractive both within and across cultures and ethnicity.