性-人类性的基本层面
Sex - Basic Aspects of Human Sexuality

性激素的功能：性激素与性行为
The Role of Hormones:Hormones and Sexual Behavior

日常生活语言里，人们有时候说到“性激素”，但是，这同样会引起误解。这会导致错误的概念——“性激素”决定性行为：更多性激素则意味着更强的性欲望；反之，则意味着较弱的性欲望。一度有人也相信了“性激素”决定着一个人的性取向。可是，这些都没有得到证实。虽然，能够假定激素对行为有某种影响，但是还不完全清楚这种确切的影响是什么。

In everyday language people sometimes speak of "sex hormones", but this is also misleading. It may support the misconception that they determine sexual behavior: More sex hormones mean an increase of sexual desire; fewer sex hormones mean a decrease of sexual desire. At one time, it was also believed that the "sex hormones" determine a person's sexual orientation. However, none of this has proven true. While hormones can be assumed to have some influence on behavior, it is not quite clear what exactly this influence is.