The proportions of genetic variance in each dimension of psychopathology explained by each higher-order factor and by unique genetic influences in Model 5 are shown in Figure 1. For eight of the 11 symptom dimensions, ≥ 68% of their genetic variance was accounted for by various combinations of the three higher-order genetic factors, with a small to modest proportion of their genetic variance being unique to each of these eight dimensions. Approximately half (52-54%) of the additive genetic variance of the remaining four symptom dimensions was unique to that dimension, with the other half shared with the higher-order genetic factors.
