Ponzi Davide, Zilioli Samuele, Mehta Pranjal H, Maslov Alexander, Watson Neil V
Department of Anthropology, University of Utah, USA.
Department of Psychology, Wayne State University, USA.
Psychoneuroendocrinology. 2016 Jun;68:6-13. doi: 10.1016/j.psyneuen.2016.02.014. Epub 2016 Feb 22.
In this study we tested whether testosterone and cortisol interacted in predicting social network centrality within a male rugby team. Using social network analysis (SNA), three measures of centrality were investigated: popularity (i.e., the number of incoming ties a participant receives), gregariousness (i.e., the number of ties leaving from a participant and reaching out to others), and betweenness (i.e., the number of times a person lies between two other individuals). In line with the idea that testosterone and cortisol jointly regulate the emergence of social status, we found that individuals with high basal testosterone and low basal cortisol were more popular and more likely to act as connectors among other individuals (i.e., betweenness). The same hormonal profile was not predictive of gregariousness. However, in line with the small literature on the topic, we found that cortisol was inversely correlated with gregariousness. Despite the cross-sectional and correlational nature of our research design, these findings represent the first empirical evidence that testosterone and cortisol interact to predict complex measures of social hierarchy position derived from social network analyses.
在本研究中，我们测试了睾酮和皮质醇在预测一支男子橄榄球队的社交网络中心性方面是否存在相互作用。使用社交网络分析（SNA），我们研究了三种中心性指标：受欢迎程度（即参与者收到的传入联系的数量）、合群性（即从参与者出发并与他人建立联系的联系数量）和中间中心性（即一个人处于另外两个人之间的次数）。与睾酮和皮质醇共同调节社会地位出现的观点一致，我们发现基础睾酮水平高且基础皮质醇水平低的个体更受欢迎，并且更有可能在其他个体之间充当连接者（即中间中心性）。相同的激素特征并不能预测合群性。然而，与关于该主题的少量文献一致，我们发现皮质醇与合群性呈负相关。尽管我们的研究设计具有横断面性和相关性，但这些发现代表了首个实证证据，即睾酮和皮质醇相互作用以预测从社交网络分析得出的社会等级地位的复杂指标。
