Criterion validity and the utility of reactive and proactive aggression: Comparisons to attention deficit hyperactivity disorder, oppositional defiant disorder, conduct disorder, and other measures of functioning

Examined the criterion validity and the utility of Dodge and Cole's (1987) measure of reactive and proactive aggression. Participants were 405 childre n in kindergarten through 5th grade attending an urban elementary school. E xamined criterion validity by testing whether reactive aggression or proact ive aggression was significantly correlated with criterion measures of over all impairment as measured by the Impairment Rating Scale (Pelham, Gnagy, e t at, 1996), classroom behavior as measured by a frequency count of classro om rule violations, and peer adjustment as measured by teacher ratings of p eer behavior on the Pittsburgh Modified IOWA Conners (Pelham, Milich, Murph y, & Murphy, 1989). Examined utility by testing whether reactive aggression or proactive aggression was significantly correlated with criterion measur es after controlling for each other and after controlling for attention def icit hyperactivity disorder oppositional defiant disorder, and conduct diso rder as measured by the Disruptive Behavior Disorder Rating Scales (Pelham, Gnagy, Greenslade, & Milich, 1992). Results showed good evidence of criter ion validity for both reactive and proactive aggression, but mixed evidence for their utility.