It Takes Two to Fight in School Too: A Social Relations Model of the Psychometric Properties and Relative Variance of Dyadic Aggression and Victimization in Middle School.

Aggressive behavior has been well-studied in terms of interindividual differences among aggressors and victims, but has been understudied, especially within naturalistic contexts, in terms of aggressor-victim relationships. The Social Relations Model (SRM) is a powerful conceptual and analytic tool for studying dyadic phenomena, and we describe the use of multivariate SRM to study aggression. Boys and girls ( = 210) in middle schools (sixth and seventh grades) completed a newly created Dyadic Aggression and Victimization Inventory (DAVI). Results support the reliability and validity of the DAVI in assessing interindividual and interdyadic differences in aggression and victimization. Occurrences of aggression were accounted for primarily by interdyadic variability, indicating the importance of considering aggressor-victim relationships. We discuss the implications of this relationship focus for future research and intervention efforts.