Aggressive behavior in the home as a function of the age and sex of control-problem and normal children

This cross-sectional study investigated the ability of age, sex, and clinic-referred or nonreferred status of children to account for variance in the performance of aggressive behavior. Two clinic-referred groups and one normative group of children, composed of 137 males and 86 females between the ages of 3 and 13, were observed during unstructured family interactions in the home setting. Measures of aggressive/aversive child behavior included a composite total aversive behavior (TAB) score, a physical aggression (PAB) score, a verbal aggression (VAB) score, a passive-dependent behavior (PDB) score, and a disobedience (DSB) score. The total regression model and referral status were significant for each of these dependent variables. Age was significant for each variable except VAB, and sex was significant only for PAB. Significant age X group interactions were obtained for TAB, PDB, and DSB. Rates of behavior clearly differentiated groups, but the relationship of age and sex of child to behavior rates was the same across groups. Decreases in all behaviors with increasing age, except for VAB, replicate findings from previous studies in preschool settings. However, the meager sex differences failed to replicate more robust findings generally reported in previous research.