Psychology 3724F/G Chapter Notes - Chapter 10: Simon Levay, Casual Sex, Sickle-Cell Disease

• School: Western University
• Department: Psychology
• Course: Psychology 3724F/G
• Professor: Lorne Campbell

Document Summary

Sociosexuality the degree to which individuals feel comfortable engaging in sex without love, closeness or commitment. All apes possess a penis bone, which helps in maintaining an errection, with one exception homosapiens. The human penis relies completely on maintaining an errection after it becomes engorged with blood, by using the muscles in the shaft of the penis to compress the veins, trapping blood so it can remain hard. Male homosexuality tends to run in families, with gay men having about 15% more homosexual brothers than heterosexual men. Roughly 10% of lesbian women have lesbian sisters. Levels of testosterone are the same when comparing heterosexual to gay men, and also comparing heterosexual to lesbian women. Compared sexual and heterosexual men and women on different aspects of mating, such as being interested in uncommitted sex, the frequency of engaging in casual sex and the importance of physical attractiveness, youth and status in a sex partner.