As shown in Table 3, the AE model fit well for most of the dimensions, although the ACE model was the most parsimonious for the Cleaning/Contamination and Superstition dimensions based on AIC. Considerable genetic contributions were observed for all dimensions with heritability estimates ranging from 30 to 77%. At least half of the variance of the dimensions was explained by genetics with the exception of Cleaning/Contamination, where approximately 70% of its variance was explained by environment, with 26% explained by common environment.