Table 3 provides model parameters from the preferred constrained model. Figure 2 illustrates the criterion loadings and thresholds for each individual substance as Criterion Information Curves (see Embretson & Reise [39] for a thorough description of the Item Response Theory framework that defines these plots). Within Figure 2, criteria that relate more strongly to the substance-specific factor (i.e., with greater loadings) display higher peaks, while criteria typically endorsed by individuals with a more severe level of the substance-specific latent trait are located farther to the right (i.e., with higher thresholds, where the x-axis is a Z-score metric).
