Table 7 presents the moderation results for the Big Five traits. In general, very few effect sizes differed by trait category. Where there were statistically significant differences, the magnitude of the differences tended to be very small. For example, extraversion and conscientiousness are significantly more heritable than the average personality outcome, and agreeableness is significantly less heritable. However, these deviations amount to about a difference of 1% of variance. Conscientiousness displayed the most consistent deviations from the average trend, as this trait tends to be more environmental, and more stable phenotypically and environmentally (but not genetically), with both genes and the environment contributing more to its stability (as would be expected since it is overall more phenotypically stable). Extraversion tends to be influenced more by genes, is more stable phenotypically and genetically, with genes contributing more to stability. Agreeableness tends to be more environmental, less stable phenotypically and environmentally, and genes contribute less to stability. No significant differences were found for neuroticism or openness. Despite several statistically significant differences between the Big Five traits, the major conclusion is that differences are strikingly trivial.
