prevalence of sexual dysfunction. In terms of problems with sexual functioning mentioned by participants in this study, the most common problems listed for males were experiencing anxiety about performing sexually (81.4%) and premature ejaculation (74.4%). Other common problems included issues becoming erect and difficulties with ejaculation. Generally, most problems were not experienced on a chronic basis. Common problems for girls included difficulties with sexual climax (86.7%), not feeling sexually interested during a sexual situation (81.2%), unsatisfactory vaginal lubrication (75.8%), anxiety about performing sexually (75.8%) and painful intercourse (25.8%). Most problems listed by the girls were not persistent problems. However, inability to experience orgasm seemed to be an issue that was persistent for some participants. The authors detected four trends during their interviews: sexual pleasure increased with the amount of sexual experience the participants had; those who had experienced sexual difficulties were typically sex-avoidant; some participants continued to engage in regular sexual activity even if they had low interest; and lastly, many experienced pain when engaging in sexual activity if they experienced low arousal. Another study found that it was not uncommon for adolescent girls in relationships to report they felt little desire to engage in sexual activity when they were in relationships. However, many girls engaged in sexual activity even if they did not desire it, in order to avoid what they think might place strains on their relationships. The researcher states that this may be because of society's pressure on girls to be "good girls"; the pressure to be "good" may make adolescent girls think they are not supposed to feel desire like boys do. Even when girls said they did feel sexual desire, they said that they felt like they were not supposed to, and often tried to cover up their feelings. This has been cited as an example of how societal expectations about gender can impact adolescent sexual functioning. Gender disparities in oral sex among adolescents There are gender differences in the giving and receiving of oral sex. One study demonstrated that young men expected to receive oral sex more than young women expected to receive it, with 43% of men and 20% of women expecting to receive it. Additionally more young men reported having oral-penis contact over oral-vulva contact with a different gender. Young men also receive more frequent oral sex than young women. One study with U.S. college students reported 62% of female participants were