Hartman, C.A.

problem children child control disorder group behavior study externalizing problems parent pdd-no externalizing adolescent internalizing temperament teacher school criteria effect interaction internalizing problems psychiatry difference score association development attention emotionality pdd-nos group mcdd group research journal sample signi scale speci health frustration level factor rating fearfulnes informant symptom university adolescent psychiatry autism assessment rothbart psychopathology signi ficantly oldehinkel trail teacher ratings report ados-g gender adolescence variable hyperactivity classi fication rule-breaking 0.001 table number clinician eisenberg stress child development mcdd children analyses ficant van der gaag american personality cohen fi ndings inattention american academy