Koot, H.M.

problem children score behavior child scale sample study parent behaviour factor health externalizing problem behavior level group effect syndrome rating difference journal internalizing table /2-3 disorder development problem scores model psychopathology teacher correlation psychiatry /depressed life events dutch adolescent achenbach analyses disability cbcl /2-3 family time 1 referral change predictor chapter community problem score american community sample oppositional event problem behaviors information school checklist variable stress preschooler report association gh treatment number trajectorie verhulst scale scores service stability analysis population validity treatment instrument teacher ratings youth child psychology variance measure adult status