This study quantified changes in self-reported sexual orientation from adolescence to early adulthood, and whether childhood gender nonconformity (GNC) predicted sexual orientation changes. Youth (2,678 boys and 3,359 girls; 96.09% ethnically White) from the Avon Longitudinal Study of Parents and Children (ALSPAC) were included. Self-reported sexual orientation was measured using sexual attraction (5-point scale) at ages 15.5, 21, and 23. GNC was measured via Preschool Activities Inventory at ages 2.5, 3.5, and 4.75 years. The prevalence of boys and girls who reported being gay/lesbian increased from 15.5 to 21 years old whereas the proportion of bisexuals was relatively stable for both sexes. Among boys, heterosexuality and being gay were equally stable and relatively more stable compared to bisexuality. Among girls, reporting being lesbian and bisexual were equally unstable and relatively less stable than heterosexuality. Girls reporting being lesbian were more likely to report changes in their sexual orientation than gay adolescent boys. The stability of being lesbian and bisexual among girls, and bisexuality among boys, increased over time. Overall, few people changed their self-reported sexual orientation between ages 21 and 23. GNC at 2.5 years, and changes in GNC from 2.5 to 4.75 years, predicted being lesbian/gay at 15.5, 21, and 23 years and changes from being heterosexual to lesbian/gay from 15.5 to 21 years in each sex. In conclusion, self-reported sexual orientation from adolescence to young adulthood is relatively stable in males compared to females, and childhood GNC is a predictor of any, albeit small, sexual orientation changes. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

中文翻译：

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在出生队列中，儿童性别不整合以及自我报告的从青春期到成年后的性取向的稳定性。

这项研究量化了从青春期到成年早期自我报告的性取向的变化，以及儿童期性别不整合（GNC）是否可以预测性取向的变化。包括来自雅芳父母和儿童纵向研究（ALSPAC）的青年（2,678名男孩和3,359名女孩； 96.09％的白人是白人）。自我报告的性取向是在15.5、21和23岁时使用性吸引力（5分制）进行测量的。GNC是通过2.5、3.5和4.75岁时的学前活动量表进行测量的。报告为同性恋者的男孩和女孩的患病率从15.5岁增加到21岁，而双性恋者的性别相对稳定。在男孩中，异性恋和成为同性恋者比双性恋同等稳定，并且相对更稳定。在女孩当中 据报告，女同性恋和双性恋者比异性恋者同样不稳定，相对不稳定。与同性恋青少年男孩相比，报告为女同性恋的女孩更有可能报告其性取向发生变化。随着时间的流逝，女孩中的同性恋和双性恋以及男孩中的双性恋的稳定性增加了。总体而言，很少有人在21岁至23岁之间改变自我报告的性取向。GNC在2.5岁时发生变化，而GNC在2.5至4.75岁之间发生变化，预计在15.5、21和23岁时为女同性恋/同志，而异性恋者则发生变化从15.5至21岁的男女同性恋者/同性恋者。总之，与女性相比，男性从青春期到成年后自我报告的性取向相对稳定，而儿童时期的GNC可以预测任何性取向变化，尽管变化很小。