The purpose of this paper was to examine the relationship between weight misperception, age at first intercourse, and lifetime number of sex partners. We used Wave III of the National Longitudinal Study of Adolescent to Adult Health (N = 11,522; 53.7% female), collected in 2001–2002. Results show that men who underestimate their weight have more lifetime sexual partners compared to men who accurately assess their weight. Women who underestimate their weight had fewer sexual partners and a higher age at first intercourse compared to women who accurately assess their weight. White participants who overestimated their weight had an earlier age of first intercourse, African Americans who underestimated their weight had more sexual partners, and weight misperception was not related to sexual behaviors among Hispanic and Asian participants. These findings suggest that weight underestimation’s relationship to sexual behaviors may differ by gender and race.

本文的目的是研究体重误解、初次性交年龄和终生性伴侣数量之间的关系。我们使用了全国青少年到成人健康纵向研究的 Wave III ( N= 11,522；53.7% 女性），收集于 2001-2002 年。结果表明，与准确评估体重的男性相比，低估自己体重的男性拥有更多的终生性伴侣。与准确评估体重的女性相比，低估自己体重的女性性伴侣较少，首次性交年龄较高。高估自己体重的白人参与者首次性交的年龄较早，低估自己体重的非裔美国人有更多的性伴侣，而西班牙裔和亚洲参与者的体重误解与性行为无关。这些发现表明，体重低估与性行为的关系可能因性别和种族而异。