Social network influences on adolescent substance use: disentangling structural equivalence from cohesion.
Social network influences on adolescent substance use: disentangling structural equivalence from cohesion.
复制标题
社交网络对青少年物质使用的影响：脱离凝聚力的结构等效性。
DOI：
10.1016/j.socscimed.2012.02.009
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发表时间：
2012-06
影响因子：
5.4
通讯作者：
Valente, Thomas W.
中科院分区：
文献类型：
--
作者：
Fujimoto, Kayo;Valente, Thomas W.
本研究调查了基于直接沟通（凝聚力）与在青少年饮酒和吸烟的背景下占据相似网络位置（结构对等）的同龄人进行比较的两种同伴影响的传染机制。迄今为止，这两种传染机制在观察上被认为是不可分割的，但本研究试图通过研究饮酒和吸烟行为的传播随社会距离（即从直接朋友到间接联系的同伴）的减弱程度，将结构等价性与凝聚力作为一种传染机制分开。这项研究利用由具有全国代表性的美国青少年（7-12 年级）样本组成的 U.S. Add Health 数据，使用网络暴露模型测量了距离青少年（朋友的朋友的朋友的朋友的朋友）四步以内的同伴冒险行为。使用饮酒和吸烟的逻辑回归模型测试同伴影响。结果表明，一般来说，基于结构对等的影响力往往比基于凝聚力的影响力更强，并且影响的程度在远离青少年（朋友的朋友的朋友）三步以内下降。进一步的分析表明，结构等同性是饮酒的一种传染机制，而凝聚力是吸烟的一种传染机制。这些结果表明，两种具有不同网络邻近性的传播机制可以对美国青少年的饮酒和吸烟行为产生不同的影响。
This study investigates two contagion mechanisms of peer influence based on direct communication (cohesion) versus comparison through peers who occupy similar network positions (structural equivalence) in the context of adolescents' drinking alcohol and smoking. To date, the two contagion mechanisms have been considered observationally inseparable, but this study attempts to disentangle structural equivalence from cohesion as a contagion mechanism by examining the extent to which the transmission of drinking and smoking behaviors attenuates as a function of social distance (i.e., from immediate friends to indirectly connected peers). Using the U.S. Add Health data consisting of a nationally representative sample of American adolescents (Grades 7-12), this study measured peer risk-taking up to four steps away from the adolescent (friends of friends of friends of friends) using a network exposure model. Peer influence was tested using a logistic regression model of alcohol drinking and cigarette smoking. Results indicate that influence based on structural equivalence tended to be stronger than influence based on cohesion in general, and that the magnitude of the effect decreased up to three steps away from the adolescent (friends of friends of friends). Further analysis indicated that structural equivalence acted as a mechanism of contagion for drinking and cohesion acted as one for smoking. These results indicate that the two transmission mechanisms with differing network proximities can differentially affect drinking and smoking behaviors in American adolescents.
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影响因子：
1.7
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