to indicate high mate value, fertility, and the ability to provide good care to offspring. They are sexually selected traits present for the purpose of honest signalling and capturing the visual attention of the opposite sex, most commonly associated with females capturing the visual attention of males. It has been proposed that these ornaments have evolved in order to advertise personal quality and reproductive value. Honest signalling with sexual ornaments is associated with ultimate causation of these evolved traits. The evolution of these ornaments is also associated with female-female competition in order to gain material benefits provided by resourceful and high status males. In humans, once these sexual ornaments develop, they are permanent. It is thought that this is associated with the long-term pair bonding humans engage in; human females engage in extended sexual activity outside of their fertile period. This relates to another ultimate cause of sexual ornaments with function in obtaining non-genetic material benefits from males. In other animal species, even other primate species, these advertisements of reproductive value are not permanent. Usually, it is the point at which the female is at her most fertile, she displays sexual swellings. Adolescence is the period of time whereby humans experience puberty, and experience anatomical changes to their bodies through the increase of sex hormones released in the body. Adolescent exaggeration is the period of time at which sexual ornaments are maximised, and peak gynoid fat content is reached. In human females, the mean age for this is approximately 16 years. Female breasts develop at this stage not only to prepare for reproduction, but also due to competition with other females in displaying their reproductive value and quality to males. Neural correlates of perceiving attractiveness Most studies of the brain activations associated with the perception of attractiveness show photographs of faces to their participants and let them or a comparable group of people rate the attractiveness of these faces. Such studies consistently find that activity in certain parts of the orbitofrontal cortex increases with increasing attractiveness of faces. This neural response has been interpreted as a reaction on the rewarding nature of attractiveness, as similar increases in activation in the medial orbitofrontal cortex can be seen in response to smiling faces and to statements of morally good actions. While most of these studies have not assessed participants of both genders or homosexual individuals, evidence from one study including male and