No personality differences between oral contraceptive users and naturally cycling women: Implications for research on sex hormones
No personality differences between oral contraceptive users and naturally cycling women: Implications for research on sex hormones
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DOI：
10.1016/j.psyneuen.2018.09.034
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发表时间：
2019-02-01
影响因子：
3.7
通讯作者：
Kelly, Dominic
中科院分区：
文献类型：
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作者：
Beltz, Adriene M.;Loviska, Amy M.;Kelly, Dominic
口服避孕药 (OC) 是最广泛使用的避孕方法，人们越来越关注其对认知、情感以及大脑结构和功能的影响。由于女性并不是随机分配使用 OC 或不使用 OC，因此尚不清楚先前报告的 OC 用户和自然循环 (NC) 女性之间的差异是否是由于性激素或与避孕药使用相关的个人特征造成的。本研究的目的是通过比较 OC 用户和 NC 女性的大五人格因素来填补这一知识空白。参与者来自两个独立的大样本。第一个包含 148 名 OC 用户和 93 名 NC 女性，第二个包含 247 名 OC 用户和 148 名 NC 女性。两个样本的多变量协方差分析（以五个人格因素作为因变量，年龄作为协变量）显示，OC 用户和 NC 女性在人格上没有显着差异，单变量效应大小的绝对值平均 d = 0.09，结果一致。当考虑 OC 使用原因时，结果模式没有变化，并且不同类型 OC 的用户在个性上没有差异。这项强有力的研究没有在两个独立样本中发现 OC 用户和 NC 女性之间的性格差异，这表明之前报道的认知、情感和大脑方面的差异可能与神经内分泌有关。
Oral contraceptives (OCs) are the most widely used contraception method, and there is increasing interest in their effects on cognition, affect, and brain structure and function. Since women are not randomly assigned to OC use or non-use, it is unclear if previously-reported differences between OC users and naturally cycling (NC) women are due to sex hormones or to personal characteristics associated with pill use. The aim of this study was to fill this knowledge gap by comparing OC users and NC women on the Big Five personality factors. Participants came from two independent, large samples. The first contained 148 OC users and 93 NC women, and the second contained 247 OC users and 148 NC women. Consistent across both samples, multivariate analyses of covariance (with the five personality factors as dependent variables and age as a covariate) revealed no significant differences between OC users and NC women in personality, with absolute values of univariate effect sizes averaging d = .09. The pattern of results did not change when reason for OC use was considered, and users of different types of OCs did not differ from each other in personality. This well-powered study did not find personality differences between OC users and NC women in two independent samples, suggesting that previously-reported differences in cognition, affect, and the brain may be linked to neuroendocrinology.