Lyons Heidi A, Manning Wendy D, Longmore Monica A, Giordano Peggy C
a Department of Sociology, Anthropology, Social Work, and Criminal Justice , Oakland University.
J Sex Res. 2015;52(5):543-57. doi: 10.1080/00224499.2014.906032. Epub 2014 Jul 3.
The prevalence of casual sexual activity among teens and emerging adults has led to much public attention. Yet limited research has investigated whether the number of casual sexual partners per year changes as heterosexual men and women transition from adolescence into emerging adulthood. We considered the influence of social context and life course factors on the number of casual sex partners. We examined four waves of interviews from the Toledo Adolescent Relationships Study (TARS) and used negative binomial growth curve models to investigate patterns of change in the number of casual sex partners (N = 1,196) ages 15 to 22. Men and women both reported increases in the number of casual sex partners over time and did not differ from each other in the rate of change over time. In all, 40% of respondents reported a recent casual sex partner at age 22. Number of prior dating relationships, education status, substance use, and perceptions of peer sexual behavior significantly influenced the number of casual sex partners. Emerging adults who did not complete high school, compared to those enrolled in four-year degree programs, reported significantly more partners. The findings contribute to research on intimate relationships and provide insights for programs targeting emerging adults.
青少年和刚成年的年轻人中随意性行为的普遍程度已引起公众广泛关注。然而，对于异性恋男女从青春期过渡到刚成年阶段时，每年随意性伴侣的数量是否会发生变化，相关研究却很有限。我们考量了社会环境和人生历程因素对随意性伴侣数量的影响。我们分析了托莱多青少年关系研究（TARS）的四轮访谈数据，并运用负二项增长曲线模型，来研究15至22岁随意性伴侣数量（N = 1196）的变化模式。男性和女性均报告称，随意性伴侣数量随时间增加，且在随时间变化的速率上没有差异。总体而言，40%的受访者表示在22岁时有近期的随意性伴侣。既往约会关系的数量、教育程度、物质使用情况以及对同伴性行为的认知，均对随意性伴侣数量有显著影响。与参加四年制学位课程的人相比，未完成高中学业的刚成年者报告的性伴侣数量显著更多。这些研究结果有助于亲密关系研究，并为针对刚成年者的项目提供了见解。
