At T1, T2, and T3, mothers and fathers used the CBCL and teachers used the Teacher Report Form (TRF) to report on children’s externalizing and internalizing problem behaviors (Achenbach, 1991a, 1991b). Items were rated 0 (not true), 1 (sometimes true), and 2 (very true). The internalizing scale was used to assess withdrawal, anxiety/depression, and somatic complaints. The externalizing scale was used to assess aggression and delinquency. Alphas for all reporters, at each assessment, ranged from .83 to .87.
