Back to back histogram of CBCL Internalizing score distributions for cases with any anxiety disorder diagnosis versus all other cases.
Note that the distribution of scores for cases with an anxiety disorder tends is shifted higher than the bulk of the distribution for cases with no comorbid anxiety, consistent with Internalizing scores being valid for discriminating anxiety disorders. However, the cases with the highest Internalizing scores do not have an anxiety disorder, indicating that the distribution is “degenerate” (Zhou et al., 2002).