Peer influence decay and behavioral diffusion in adolescent networks: A simulation approach · C. Wang et al.
原文开头
Cheng Wang1*, Carter T. Butts2,3, John R. Hipp2,4, Cynthia M. Lakon5 How far does peer influence spread through social networks before dissipating? This study investigates the diffusion of smoking behavior in adolescent friendship networks using longitudinal data from two schools (n = 3154 students) in the National Longitudinal Study of Adolescent to Adult Health. Using Stochastic Actor–Oriented Models, we simulate interventions targeting heavy smokers using various strategies (random, in-degree, eigenvector centrality) and coverage (10 to 100%). A new exponential decay model quantifies influence attenuation, revealing indirect peer influences, or spillover effects, up to three steps from targets. Targeting 10 to 30% of central individuals maximizes smoking reductions, but gains plateau beyond 40 to 50% owing to network saturation. …
摘自《科学》(Science)第392卷 第6797期 · 2026年4月30日,C. Wang et al.。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。