期刊
NETWORK SCIENCE
卷 6, 期 3, 页码 370-395出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/nws.2018.11
关键词
peer influence; friendship networks; social context; stochastic actor-oriented network dynamic model; sports; extracurricular activity participation; two-mode homophily
资金
- National Institutes of Health [R01MH100021, R01DA039934]
- [RC1AA019239]
- [R01CA157155]
- [R00AA019699]
We examined social mechanisms that account for similarity in the social context of school-sponsored extracurricular sports activities among friends. We distinguish two social mechanisms: shared sports activities that lead to friendship, whereby friendship formation and maintenance are conditioned by joint sports participation, and friendship that leads to shared sports activities, a form of social influence whereby adolescents join or maintain certain sports activities based on their friends' choices. Using a longitudinal sample of 1,776 10th graders at five high schools in Southern California, we employed a stochastic actor-oriented multivariate dynamic model to model the dynamic interplay between the two-mode affiliation network of adolescents' participation in sports activities and the one-mode friendship network. As a corresponding descriptive method, we propose a quantitative measure for the relative strength of the two-mentioned mechanisms as explanations of the association between the one-mode and the two-mode network. Further, we introduce two specifications that represent homophily effects in the two-mode network and apply them to test gender homophily in sports participation. The results provide strong evidence for both mechanisms, with friendship leading to shared sport activities as stronger than shared sports activities leading to friendships in explaining adolescents' friendships with co-participants.
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