Billy J O, Udry J R
Adolescence. 1985 Spring;20(77):21-32.
Using panel data from a junior high school system in an urban area of Florida, we examine whether adolescents' best same-sex and best opposite-sex friends' sexual intercourse behavior increases the likelihood that respondents who are virgins at round 1 will make the transition to intercourse between rounds of our study. We find no significant influence effects of friends of either sex for black males or females, or white males. In contrast, white females are influenced by the sexual behavior of both their best female friend and best male friend. A virgin white female whose best friends of both sexes were sexually experience at round 1 was almost certain to have sexual intercourse within the two years of our study.
利用佛罗里达州一个市区初中系统的面板数据，我们研究了青少年最好的同性和异性朋友的性行为是否会增加在第一轮调查时还是处女的受访者在我们研究的各轮调查之间发生性行为转变的可能性。我们发现，对于黑人男性或女性以及白人男性来说，任何性别的朋友都没有显著的影响效应。相比之下，白人女性会受到她们最好的女性朋友和最好的男性朋友性行为的影响。在第一轮调查时，最好的同性和异性朋友都有性经验的处女白人女性，几乎肯定会在我们研究的两年内发生性行为。
