Genetic influences on personality differences are ubiquitous, but their nature is not well
understood. A theoretical framework might help, and can be provided by evolutionary …

Personality traits are basic dimensions of behavioral variation, and twin, family, and
adoption studies show that around 30% of the between-individual variation is due to genetic …

Highlights•Evolutionary forces that maintain genetic variance in traits can be inferred from
their genetic architecture and fitness correlates.•A substantial amount of new data on the …

The first candidate gene studies of human personality promised much but, in the fifteen
years since their publication, have delivered little in the way of clear evidence for the …

Most personality traits show some genetic influence (ie, are to some extent inherited).
Studies of personality and temperament in infancy, childhood, a dolescence, adulthood, and …

There is abundant evidence, some of it reviewed in this paper, that personality traits are
substantially influenced by the genes. Much remains to be understood about how and why …

We review the genetically informed literature on the genetics of personality. Over the past
century, quantitative genetic studies, using identical and fraternal twins, have demonstrated …

Why are some people more sociable than others and some more emotionally sensitive?
What makes people differ from one another, and how do these differences come about …

One of the longest-standing debates within psychology concerns the extent to which we can
identify biological factors in the prediction of individual differences in personality. Factors …

The phenotypic structure of personality traits has been well described, but it has not yet been
explained causally. Behavior genetic covariance analyses can identify the underlying …