Department of Education & Human Services, St. Augustine Center, Villanova University, Villanova, PA 19010, USA.
J Adolesc. 2011 Oct;34(5):1055-63. doi: 10.1016/j.adolescence.2010.11.002. Epub 2010 Dec 7.
This study tested a mediation model of the relationship with tobacco use, social network quality (level of risk or protection in a network), and substance use (alcohol and/or illicit drugs) with a sample of 301 urban adolescents. It was theorized that social network quality would mediate the effect of tobacco use, accounting for PTSD symptoms and parent-teen relationships, on substance use. Results of path modeling with AMOS showed that the model provided an overall very good fit to the data and demonstrated partial mediation effects of social network quality on substance use. An effect-size measure was applied to determine what proportion of the total effect was mediated by the intervening (social network) variable and produced a moderate effect size (0.31). Results highlight the mediating role of social network quality on risk factors for adolescent substance use and are informative to prevention science in advancing social operational models of substance use.
本研究通过对 301 名城市青少年进行测试，检验了一个与烟草使用、社交网络质量（网络中的风险或保护程度）和物质使用（酒精和/或非法药物）关系的中介模型。研究假设社交网络质量将在烟草使用、创伤后应激障碍症状和父母与青少年的关系对物质使用的影响中起到中介作用。采用 AMOS 的路径建模结果表明，该模型非常好地适用于数据，并证明了社交网络质量对物质使用的部分中介效应。应用效应大小测量来确定中介（社交网络）变量对总效应的影响程度，产生了中等效应大小（0.31）。结果强调了社交网络质量在青少年物质使用风险因素中的中介作用，为预防科学推进物质使用的社会运作模型提供了信息。
