Disruptive behavior problems frequently emerge in the preschool years and are associated with numerous, long-term negative outcomes, including comorbid disorders. First Step is a psychosocial early intervention with substantial empirical evidence supporting its efficacy among young children. The present study reports on a validation study of the…

The current study evaluated whether a manualized training in functional behavioral assessment (FBA) would result in typical school professionals being able to conduct a procedurally adequate FBA with a technically accurate summary statement for student behavior. Additionally, the study examined whether summary statements obtained by trained school…