Round 1: and Author Response The goal of this study was to distinguish subgroups of relationally aggressive females (i.e., reactively aggressive-only subgroup, reactively-and-proactively aggressive-combined subgroup, non-aggressive subgroup), on the basis of nine factors reflecting individual characteristics, peer-related variables and R3 parental control.
Second, the authors do not mention why they implicitly selected an additive model (i.e., each factor makes a unique and independent contribution) instead of, for example, an interactional model.