Cumulative risk and promotive factors and physical and relational aggression during early adolescence

Sarah Stoddard, PhD, RN1, Carissa Schmidt, MPH2, Raelle Saulson3 and Marc Zimmerman, PhD2
(1)University of Michigan, Ann Arbor, MI, (2)University of Michigan School of Public Health, Ann Arbor, MI, (3)University of Michigan, Ann Arbor, MI