Crime, Law and Justice Program, Department of Sociology, Pennsylvania State University, University Park, PA, USA.
J Adolesc Health. 2013 Aug;53(2):174-9. doi: 10.1016/j.jadohealth.2013.02.013.
We test the hypothesis that an evidence-based preventive intervention will change adolescent friendship networks to reduce the potential for peer influence toward antisocial behavior. Altering adolescents' friendship networks in this way is a promising avenue for achieving setting-level prevention benefits such as expanding the reach and durability of program effects.
Beginning in 2002, the Promoting School-University Partnerships to Enhance Resilience (PROSPER) randomized control trial assigned two entire sixth-grade cohorts of 14 rural and small town school districts in Iowa and Pennsylvania to receive the intervention and of 14 to control. A family-based intervention was offered in sixth grade and a school-based intervention was provided in seventh grade. More than 11,000 respondents provided five waves of data on friendship networks, attitudes, and behavior in sixth through ninth grade. Antisocial influence potential was measured by the association between network centrality and problem behavior for each of 256 networks (time, grade cohort, and school specific).
The intervention had a beneficial impact on antisocial influence potential of adolescents' friendship networks, with p < .05 for both of the primary composite measures.
Current evidence-based preventive interventions can alter adolescents' friendship networks in ways that reduce the potential for peer influence toward antisocial behavior.
我们检验了这样一个假设，即基于证据的预防干预措施将改变青少年的友谊网络，以减少同伴对反社会行为的影响。以这种方式改变青少年的友谊网络是实现以环境为基础的预防效益的一种有前途的途径，例如扩大项目效果的影响范围和持久性。
从 2002 年开始，促进学校-大学伙伴关系以增强适应力（PROSPER）随机对照试验将爱荷华州和宾夕法尼亚州的两个完整的六年级队列的 14 个农村和小镇学区分配到干预组和对照组。在六年级提供了以家庭为基础的干预，在七年级提供了以学校为基础的干预。超过 11000 名受访者在六年级到九年级期间提供了关于友谊网络、态度和行为的五波数据。反社会影响潜力通过网络中心度与每个 256 个网络（时间、年级队列和学校特定）中问题行为之间的关系来衡量。
干预对青少年友谊网络的反社会影响潜力产生了有益的影响，两种主要综合测量的 p 值均<.05。
目前基于证据的预防干预措施可以改变青少年的友谊网络，从而减少同伴对反社会行为的影响。
