Genetic and nonshared environmental contributions to variance in the 11 manifest psychopathology dimensions, and the correlations among the genetic and nonshared environmental contributions to these 11 phenotypes derived from the correlated factors model, are presented in Table 2. The contributions of shared environmental influences (c2) on each psychopathology dimension could be set to 0 without loss of fit, with the exception of GAD, MDD, SAD and OCD. Estimates of c2 for these phenotypes were: MDD = .05, GAD = .03, SAD = .23, and OCD = .21. All six correlations among these C components were significant, ranging from .11 between GAD and OCD to .93 between MDD and GAD (available upon request); C for these six phenotypes was allowed to correlate freely. All multivariate models included S for inattention, hyperactivity-impulsivity, and CD, but because they do not reflect genetic or environmental influences, they were not allowed to correlate.
