identified in the boxes on the right side of Figure 1. Subscale scores (means or, in the case of the Achenbach measures, T-scores divided by 10 to reduce variance for modeling purposes) were z-scored and averaged within reporter to yield six observed variable indicators for BD and four observed variable indicators for CP (see Figure 1). Confirmatory factor analysis using MPlus Version 5.1 (Muthen & Muthen, 1998–2007) was conducted to test the fit of the Figure 1 two factor model of BD and CP. This two factor model (including correlated errors to accommodate method variance) best fit the data well: χ2(25)=67.03, p=.00, CFI=.98, RMSEA=.06. Standardized factor loadings are shown in Figure 1. Mother-rated variables loaded more strongly; all factor loadings were statistically significant at p<.001 or less. As expected (Waschbusch, 2002), BD and CP were significantly correlated (r=.71). A one factor model did not fit the data better: χ2(26)=191.95, p=.00, CFI=.94, RMSEA=.12 (χ2diff (1)=124.92, p<.001). Despite their lower factor loadings, teacher reports were retained to improve the estimation of behavior cross-situationally (at home and at school). The two factor measurement model was retained and incorporated within all subsequent structural models. Factor loadings and the BD-CP intercorrelation were similar across all
