This tends to vary from person to person. This can be interpreted as women possessing an adaptation to be attracted to men possessing markers of genetic fitness, therefore sexual attraction depends on the qualities of her partner. Qualities that are not instantly available such as psychology, individual genetic and cultural influence can also lead to sexual attraction. In such, a symmetrical and masculine face outwardly indicates the reproductive value of a prospective mate. A meta analysis, investigating 50 studies about whether women's mate preferences for good gene-related male traits changed across the ovarian cycle found that women's preferences change across their cycle:
Gray asexuality includes those who only experience sexual attraction under certain circumstances; for example, exclusively after an emotional bond has been formed. Those using the contraceptive pill , and therefore not following regular cyclical patterns, reported no such preference. In such, during ovulation, females show a strong preference for symmetrical males as they are reaching peak fertility. The effect to which a person is successful at drawing sexual attraction based upon physical traits is known as sex appeal. When asexuals experience a physical desire for sex a libido , it is not connected to attraction or desire to another person, and thus can be satisfied without a partner. The experiment showed that the male's sexual imagery in the TAT was much higher when self shock was anticipated and not when the female confederate shock was anticipated. As well as masculinity, females are more sensitive to the scent of males who display high levels of developmental stability. However,  additional trends have been found with a greater sensitivity to partner status in women choosing a sexual partner and men placing a greater emphasis on physical attractiveness in a potential mate, as well as a significantly greater tendency toward sexual jealousy in men and emotional jealousy in women. A common definition of sexual attraction is that it is defined as a directed libido. This involves the impact one's appearance has on the senses , especially in the beginning of a relationship: It has been suggested that this difference in preference is because feminine women those with high E3G levels are more successful at obtaining investment. This effect has been found to be most significant in women who are less feminine those with low E3G levels , in comparison to women with higher E3G levels. For example, it has been suggested that women's sexual preferences shift toward more masculine physical characteristics during peak phases of fertility. However, sexual attraction can be independent of other attractions or emotional connections, which results in only desiring sex. Sexual attraction can be based upon many qualities of a person. Audition how the other's voice and movements sound ; Olfaction how the other smells, naturally or artificially; the wrong smell may be repellent. Physical qualities can include, but are not limited to; appearance, movement, smell and clothing. This can be interpreted as women possessing an adaptation to be attracted to men possessing markers of genetic fitness, therefore sexual attraction depends on the qualities of her partner. This is evidenced in research focusing on traits of symmetrical males, who consistently record higher levels of IQ, coordination, social dominance, and consequently, greater reproductive fitness. Sexual preferences and hormones The ovulatory shift hypothesis refers to the idea that female humans tend to exhibit different sexual behaviours and desires at points in their cycle, as an evolutionarily adaptive means to ensure that a high quality male is chosen to copulate with during the most fertile period of the cycle. It is commonly held that sexual attraction involves a desire for the sexual act itself, rather than its social consequences. Women show the greatest preference for good gene male traits at their most fertile window. A meta analysis, investigating 50 studies about whether women's mate preferences for good gene-related male traits changed across the ovarian cycle found that women's preferences change across their cycle: For example, women who had weekly sexual intercourse with men had menstrual cycles with the average duration of 29 days, while women with less frequent sexual interactions tended to have more extreme cycle lengths. Influencing factors may be determined more locally among sub-cultures, across sexual fields , or simply by the preferences of the individual.
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