Three-year course of behavioral/emotional problems in a national sample of 4- to 16-year-olds: I. Agreement among informants
McConaughy SH, Stanger C, Achenbach TM. Three-year course of behavioral/emotional problems in a national sample of 4- to 16-year-olds: I. Agreement among informants. J Am Acad Child Adolesc Psychiatry. 1992; 31(5):932 - 940.