The correlations in Table 2 quantify the extent to which the 11 psychopathology dimensions are associated due to common genetic and common nonshared environmental influences on each pair of dimensions. All 11 psychopathology dimensions were heritable (a2) and substantial genetic correlations accounted for most of the phenotypic correlations among the psychopathology dimensions (Table 2, below the diagonal). In contrast, nonshared environmental influences (e2) were substantial, but correlations among these influences for the 11 psychopathology dimensions were substantially smaller (Table 2, above the diagonal).