Cortisol and testosterone associations with social network dynamics |
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| Institution: | 1. Institute for Interdisciplinary Salivary Bioscience Research, Arizona State University, United States;2. Department of Psychology, Arizona State University, United States;3. School of Human Evolution and Social Change, Arizona State University, United States;4. School of Music, Loyola University New Orleans, United States;5. Herberger Institute for Design and the Arts, Arizona State University, United States;6. Johns Hopkins University School of Nursing, United States;7. Johns Hopkins University Bloomberg School of Public Health, United States;8. Johns Hopkins University School of Medicine, United States;1. Department of Biosciences, University of Milan, via Celoria 26, Milan, Italy;2. Research and Conservation Department, Parco Natura Viva, Verona, Italy;1. Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen, Germany;2. Jülich Aachen Research Alliance (JARA) – BRAIN Institute I, Jülich/Aachen, Germany;1. Department of Psychology, University of Oregon, 1227 University of Oregon, Eugene, OR 97403, USA;2. Department of Management & Organization, NUS Business School, National University of Singapore, Mochtar Riady Building, 15 Kent Ridge Drive, Singapore 119245, Republic of Singapore;3. International Institute of Management Development (IMD), Chemin de Bellerive 23, 1003 Lausanne, Switzerland;4. Saw Swee Hock School of Public Health, National University of Singapore, Tahir Foundation Building, 12 Science Drive 2, Singapore 117549, Republic of Singapore;5. PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Jalan Tungku Link Gadong, BE1410 Negara, Brunei Darussalam;1. Department of Sport, School of Physical Education and Sport, University of Sao Paulo, Sao Paulo, Brazil;2. School of Arts, Sciences and Humanities, University of Sao Paulo, Sao Paulo, Brazil |
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| Abstract: | This study integrates behavioral endocrinology and network science to explore links between hormones and social network dynamics. Specifically, we examine how cortisol (C) and testosterone (T) are associated with creation of new friendships and maintenance of existing friendships. A collegiate marching band was used as a model system of a mixed-sex social organization. Participants (n = 193; 53% female; M age = 19.4 years, 62.1% European-American) provided friendship nominations at time 1 and two months later at time 2. At time 1, participants donated saliva before and after rehearsal (later assayed for C and T). Stochastic actor-based models revealed that individuals with higher C levels were less likely to maintain their social relationships and more likely to create new friendships. In contrast, individuals with higher T levels were more likely to maintain friendships and less likely to create new relationships. Findings suggest that individual differences in C and T are associated with the initiation and maintenance of friendships and have several noteworthy theoretical implications. |
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