Additive genetic correlations between OC trait dimensions accounted for the majority of their co-variance. Significant correlations between A were observed for most pairs of dimensions except for Cleaning/Contamination with Superstition and Rumination. The highest additive genetic correlation was observed for Symmetry/Ordering and Counting/Checking (0.86) and for Symmetry/Ordering and Rumination (0.86). Unique environmental influences also accounted for significant co-variance between OC trait dimensions. The Cleaning/Contamination and the Symmetry/Ordering dimensions showed highest E correlations (0.53). The lowest unique environmental correlation was for the Cleaning/Contamination and Hoarding dimension (0.04).
