278 similar results showing increases in heritability have been found in longitudinal adoption studies 5152 as well as in longitudinal twin studies from early to middle childhood 5354 and from middle childhood to adolescence. Personality is widely broken down into five main traits. Know Yourself Within The Ocean The Big 5 Personality Traits Satori Way Psychopathy is a disorder marked by a constellation of maladaptive personality traits. . Hundreds of genetic variants are expected to influence its complex development but few have been identified. Although these findings have been criticised because they rely on cross-sectional comparisons Mackintosh 50 p. Twin studies indicate that genetic factors explain roughly 40-60 of the population variance in personality traits. Heritability is a measure of how well differences in peoples genes account for differences in their traits. Broad genetic influence on the five dimensions of