and TF-PC4 (with peak energy also centered around 2.5 Hz, but occurring slightly later in time, around 400 ms; see Figure 2) both loaded with EXT, with very similar loading patterns and magnitude of loadings for the two genders, thus indicating that these were the TF components most relevant to externalizing. In addition to loading with EXT, these components were highly correlated, with correlations between component scores for the different electrodes ranging from .76 to .91. Thus, to simplify our Cholesky model and avoid potential issues with collinearity, we elected to include in our model only TF-PC1, which loaded most strongly on the combined component in both genders.
